Re: PPP Multilink or Cisco BoD (Correction on Typo)

[Adam Burgess]

Sorry - previous message should have read:

Correct - although you don't need to specify 'ppp multilink' in order to
bring up multiple channels, you only need to use 'dialer load-threshold'.
This enables bandwidth on demand and seems to provide the same throughput
and functionality as ppp multilink.

If you specify dialer load-threshold AND ppp multilink, then the interfaces
switches to 'industry standard' ppp multilink.

I was curious if there were any benefits (ie. bandwidth utilisation, delay,
CPU time, memory, etc) to be gained by using bandwidth on demand without ppp
multilink.

Adam
> - Original Message -
> From: "Santosh Koshy" <[EMAIL PROTECTED]>
> Newsgroups: groupstudy.cisco
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, February 11, 2001 3:46 PM
> Subject: Re: PPP Multilink or Cisco BoD
>
>
> > The dialer load-threshold feature, works in combination with ppp
> > multilink...
> > What "dialer load-threshold" does is, define the load level that must be
> > exceeded on the first ISDN B channel before the router attempts to bring
> up
> > a second B channel for a multilink PPP connection.
> >
> > ""Adam Burgess"" <[EMAIL PROTECTED]> wrote in message
> > 011001c093dd$116e7140$[EMAIL PROTECTED]">news:011001c093dd$116e7140$[EMAIL PROTECTED]...
> > > To all DDR gurus:
> > >
> > > Are there any benefits in using the Cisco Proprietary =
> > > Bandwidth-on-Demand feature (ie. dialer load-threshold), rather than =
> > > using ppp multilink (other than the fact the ppp multilink is
standard)?
> > >
> > > Regards
> > >
> > > Adam Burgess
> > > Brisbane, Australia
> > >
> > > _
> > > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com/list/cisco.html
> > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> > >
> >
> >
> > _
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> >
>
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empty bootflash/flash on a 4500; no tftpdnld, only dnld

[Rama, Subu]

Dear groupstudy:
We have a 4500M with empty bootflash/flash. We are at the rommon prompt
and have access only to "dnld". No "tftpdnld" or "xmodem" commands
available.

Thought dnld was probably the older name for xmodem and tried using it.
No success. Each time a new line is received from the sending xmodem program
(pro-comm plus), dnld tries to interpret it as a command.

We searched www.cisco.com a lot but I can't find any documentation on the
"dnld" command.

Any help in getting this 4500 up is appreciated.

Thank you
Subu
 

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RE: telnet access to pix

[Gil Shulman]

Hi,


   The PIX firewall doesn't support telnet through the outside interface,
the exception to that is if the telnet session is through a secured
connection via VPN & needless to say that you need to configure the telnet
server to accept specific IP's.
# In the future OS versions, as far as I know, it will be possible, it is on
Cisco's road map.

   Gil 

-Original Message-
From: Frank Kim [mailto:[EMAIL PROTECTED]]
Sent: ???  09 ?? 2001 22:42
To: [EMAIL PROTECTED]
Subject: telnet access to pix


Hey guys,
I got eth0= security0 and eth1=security100.  I'm able to telnet from the
inside network.  Is there any way for me to telnet from the outside?  Pix
has disabled this by default.

-Frank


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CIM

[Walid Al-Sadeq]

Could somebody emphasize a little more about Mentor Labs in terms of where
to go to start using them, charges if any, and so forth  thanks in
advance

Willie


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Re: CIM

[Larry Lamb]

www.mentorlabs.com charges vary on the complexity of the lab and are
detailed in the lab catalog.

"Walid Al-Sadeq" wrote in message ...
>Could somebody emphasize a little more about Mentor Labs in terms of where
>to go to start using them, charges if any, and so forth  thanks in
>advance
>
>Willie
>
>
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Re: Networkers toolkit question, Thank you!

[Howard C. Berkowitz]

There are special troubleshooting considerations for home labs.  When 
I first notice a connectivity problem, and the hub or switch light 
isn't on solidly, I tug gently on the cable.  If the cable tugs back, 
I look under the table and discuss the matter with my feline 
editorial and technical assistant, Clifford:

"Let go of the cable. There is no need to eat it. If you are that 
hungry, come in the kitchen for a treat."

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Re: loadbalancing with NIC's

[Kenneth]

The 6509 will see it as 2 separate MAC addresses. Based on my conversation
with Ipmetrics engineer (i think it was them) the way it functions is this:

Server A has ip 192.168.1.5

The NIC that is capable of loadbalancing maintains two unique MAC addresses.

Everytime a client generates an arp request, it gives out MAC Address 1
When Another client generates an arp request, it gives out MAC address 2
It does this by doing a round-robin

Based on this, incoming requests are done via static load-balancing,
meaning, there is a static mapping of client-MAC to server-MAC. In case of a
large network, statistically, this will provide an equal load on both ports.

The switch will not use STP to block ports since there are two different MAC
address on two different ports.

Hope this helps!

Kenneth Lorenzo

Moahzam Durrani <[EMAIL PROTECTED]> wrote in message
ED49D16A9BE4D41189C000104B2E399864C08D@sj-exchange">news:ED49D16A9BE4D41189C000104B2E399864C08D@sj-exchange...
>
> We are planning to connect a server with a single   NIC that supports
> faultolerance , redudndancy and load balancing.  How does a C6509 treat a
> Nic that is connected to two of its ports (same vlans)
> Mo Durrani
> IS&T
> WYSE\EDS
> phone:408-473 1246
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
>
>
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Re: IP Multicast Addressing

[Brian Keyser]

Phil,
It has to do with the hight order bit. Look at the address space in binary.

The range 224.0.0.0 - 239.255.255.255 becomes:

1100... through 
1101...

If you add that one bit so that the first octet becomes 1110 then you 
have moved past this boundry to become a class E address.

Brian

Circusnuts wrote:

> I'm reading through McGraw Hill's BUMS book.  Chapter 7 deals with IP =
> Multicast Addressing.  I understand that class D addresses are used =
> (high order bits set to 1110), but a statement used in the book confuses =
> me:
> 
> IP Multicast addresses start with 224.0.0.0 and end with 239.255.255.255
> 
> I'm not real keen on where the 239 came from...
> 
> Thanks All !!!
> Phil=20
> 
> _
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> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> 
> 

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RE: A inquiry about ARP behavior, vendors, and differences

[Bob Vance]

>because sometimes removing the default
>gateway didn't cause a problem.

That's interesting.  I've never run across an OS implementation like
that (that I know of :), but I've been pretty much limited to Windoze
and various Unices.  Can you remember some specific examples.

Now that I think about it, though, I believe that I *do* vaguely
remember configuring some kind of network device that asked something
like "ARP for addresses?" -- and maybe it was "ARP for non-local
addresses?".  I would guess that I said "No", not really knowing what
it was asking and always using a default route :)

I know that Windoze does *not* default to ARP for non-local, as RAJ just
also showed, but it *does* support the "route-to-self".
Linux behaves the same way.

-
Tks        | 
BV     | 
Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
Vox 770-623-3430   11455 Lakefield Dr.
Fax 770-623-3429   Duluth, GA 30097-1511
=





-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Priscilla Oppenheimer
Sent: Saturday, February 10, 2001 6:20 PM
To: [EMAIL PROTECTED]
Subject: Re: A inquiry about ARP behavior, vendors, and differences


At 05:35 PM 2/10/01, Raj Singh wrote:
>NOTE: Long email / question ... regarding ARP and Proxy ARP behavior
with
>different vendors OS.
>
>A inquiry about ARP behavior, vendors, and differences.
>
>Does the way a host machine behave during the ARP process differ
amongst
>different OS manufacturers, in relationship to when Proxy ARP can be
>implement and when it can't be.

Yes. You would have to do some testing to determine which ones ARP for
non-local stations and which don't. (It sounds like you already did some
testing.) When I used to teach the CIT class, one of the "bugs" we
inserted
was to remove the default gateway in the PC. The goal was to make it
impossible for the PC to reach non-local stations. We also had to insert
"no proxy arp" in the router config, because sometimes removing the
default
gateway didn't cause a problem. We were at the mercy of whatever TCP/IP
implementation happened to be on the PC. Different vendors, different
OSs,
different versions worked differently.

One other trick is to set the default gateway to the station's own
address.
For some strange reason, on some OSs this causes the station to ARP for
non-local addresses.

Priscilla




>This inquiry should not be mistaken with "is proxy ARP a good idea or
bad
>idea" question. I just want to find some behavior facts out. Thanks.
>
>Given the following situation:
>
>  ClientA   ClientB
>   |  |
>||
>  |
>  |
>  X
>  {ROUTER}
>  Y
>   |
>   |
>|-|
> |
>  ClientC
>
>Settings:
>
>ClientA: 192.168.12.5 /24
>ClientB: 192.168.12.6 /24
>ClientC: 192.168.20.101 /24
>
>Interface X on Router: 192.168.12.1 /24
>Interface Y on Router: 192.168.20.1 /24
>Proxy ARP enabled on both router interfaces
>
>None of the clients have been configured with a default gateway
setting.
>
>The operating systems are Windows 98. (Though if you prefer you can say
it
>is NT 4.0)
>
>The basic statement that I have a question about:
>
>According to Jeff Doyle's Routing TCP/IP vol. 1, book on page 69-70 in
>quotes below -
>
>"... For example, a host 192.168.12.5/24 needs to send a packet to
>192.168.20.101/24, but is not configured with default gateway
information
>and therefore does no know how to reach a router. It may issue an ARP
>request for 192.168.20.101; the local router, receiving the request and
>knowing how to reach network 192.168.20.0, will issue an ARP reply with
it's
>own data link identifier in the hardware address field. In effect, the
>router has tricked the local host into thinking that the router's
interface
>is the interface of 192.168.20.101. All packets destined for that
address
>will be send to the router. ..."
>
>The question itself:
>
>The question I have with this is that under a Windows environment at
least
>in my experience, The decision making process is as follows when trying
to d
>o an address resolution (ARP Request).
>
>Sender looks at it's own IP address and Subnet Mask compares it to the
>target machines IP address to determine if on the same subnetwork. If
it is
>so . an ARP request is issued. But if the Sender's IP address and the
Target
>'s IP address are not part of the same subnetwork . the sending machine
>looks for it's default gateway and does an ARP request for it.
>
>Thus the problem is . if there is no default gateway setup for the
sender .
>It won't even attempt to do an ARP request . it will IMMEDIATELY say .
>Destination host unreachable.
>
>Demonstration 1:
>
>ClientA: 192.168.12.5 /24 PINGSClientC: 192.168.20.101 /24
>
>Notice in the PING results below, where Client A pinging Client C

RE: A inquiry about ARP behavior, vendors, and differences

[Bob Vance]

Actually, rather than "route-to-self", as I used in my other post, I
would be more correct to say "route-to-interface".
When the IP stack sees that the default route is the interface, it
ARPs for non-addresses as well as local.


>would it behave the same way if the default gateway was set to a
>loopback address of 127.x.x.x also

Pointing to 127.0.0.1 would not be the same as pointing to an interface.
It means more "me, myself, and I".

-
Tks        | 
BV     | 
Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
Vox 770-623-3430   11455 Lakefield Dr.
Fax 770-623-3429   Duluth, GA 30097-1511
=





-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Raj Singh
Sent: Saturday, February 10, 2001 6:28 PM
To: [EMAIL PROTECTED]
Subject: Re: A inquiry about ARP behavior, vendors, and differences


Thanks for confirming my suspicions, though one question on the  part
about
setting the default gateway on a host to point to it's own ip address
...
would it behave the same way if the default gateway was set to a
loopback
address of 127.x.x.x also. Or did that change the behavior ?

Thanks again.

- raj

"Priscilla Oppenheimer" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> At 05:35 PM 2/10/01, Raj Singh wrote:
> >NOTE: Long email / question ... regarding ARP and Proxy ARP behavior
with
> >different vendors OS.
> >
> >A inquiry about ARP behavior, vendors, and differences.
> >
> >Does the way a host machine behave during the ARP process differ
amongst
> >different OS manufacturers, in relationship to when Proxy ARP can be
> >implement and when it can't be.
>
> Yes. You would have to do some testing to determine which ones ARP for
> non-local stations and which don't. (It sounds like you already did
some
> testing.) When I used to teach the CIT class, one of the "bugs" we
inserted
> was to remove the default gateway in the PC. The goal was to make it
> impossible for the PC to reach non-local stations. We also had to
insert
> "no proxy arp" in the router config, because sometimes removing the
default
> gateway didn't cause a problem. We were at the mercy of whatever
TCP/IP
> implementation happened to be on the PC. Different vendors, different
OSs,
> different versions worked differently.
>
> One other trick is to set the default gateway to the station's own
address.
> For some strange reason, on some OSs this causes the station to ARP
for
> non-local addresses.
>
> Priscilla
>
>
>
>
> >This inquiry should not be mistaken with "is proxy ARP a good idea or
bad
> >idea" question. I just want to find some behavior facts out. Thanks.
> >
> >Given the following situation:
> >
> >  ClientA   ClientB
> >   |  |
> >||
> >  |
> >  |
> >  X
> >  {ROUTER}
> >  Y
> >   |
> >   |
> >|-|
> > |
> >  ClientC
> >
> >Settings:
> >
> >ClientA: 192.168.12.5 /24
> >ClientB: 192.168.12.6 /24
> >ClientC: 192.168.20.101 /24
> >
> >Interface X on Router: 192.168.12.1 /24
> >Interface Y on Router: 192.168.20.1 /24
> >Proxy ARP enabled on both router interfaces
> >
> >None of the clients have been configured with a default gateway
setting.
> >
> >The operating systems are Windows 98. (Though if you prefer you can
say
it
> >is NT 4.0)
> >
> >The basic statement that I have a question about:
> >
> >According to Jeff Doyle's Routing TCP/IP vol. 1, book on page 69-70
in
> >quotes below -
> >
> >"... For example, a host 192.168.12.5/24 needs to send a packet to
> >192.168.20.101/24, but is not configured with default gateway
information
> >and therefore does no know how to reach a router. It may issue an ARP
> >request for 192.168.20.101; the local router, receiving the request
and
> >knowing how to reach network 192.168.20.0, will issue an ARP reply
with
it's
> >own data link identifier in the hardware address field. In effect,
the
> >router has tricked the local host into thinking that the router's
interface
> >is the interface of 192.168.20.101. All packets destined for that
address
> >will be send to the router. ..."
> >
> >The question itself:
> >
> >The question I have with this is that under a Windows environment at
least
> >in my experience, The decision making process is as follows when
trying
to d
> >o an address resolution (ARP Request).
> >
> >Sender looks at it's own IP address and Subnet Mask compares it to
the
> >target machines IP address to determine if on the same subnetwork. If
it
is
> >so . an ARP request is issued. But if the Sender's IP address and the
Target
> >'s IP address are not part of the same subnetwork . the sending
machine
> >looks for it's default gateway and does an ARP request for it.
> >
> >Thus the problem is . if there is no default gateway setup for the
sender

Re: IP Multicast Addressing

[Circusnuts]

Yepper's- makes total sense... I saw is as a subnet mask @ first glance.

Thanks
Phil

- Original Message -
From: "Brian Keyser" <[EMAIL PROTECTED]>
To: "Circusnuts" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 3:29 PM
Subject: Re: IP Multicast Addressing


> Phil,
> It has to do with the hight order bit. Look at the address space in
binary.
>
> The range 224.0.0.0 - 239.255.255.255 becomes:
>
> 1100... through
> 1101...
>
> If you add that one bit so that the first octet becomes 1110 then you
> have moved past this boundry to become a class E address.
>
> Brian
>
> Circusnuts wrote:
>
> > I'm reading through McGraw Hill's BUMS book.  Chapter 7 deals with IP =
> > Multicast Addressing.  I understand that class D addresses are used =
> > (high order bits set to 1110), but a statement used in the book confuses
=
> > me:
> >
> > IP Multicast addresses start with 224.0.0.0 and end with 239.255.255.255
> >
> > I'm not real keen on where the 239 came from...
> >
> > Thanks All !!!
> > Phil=20
> >
> > _
> > FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> >
> >
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
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>

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Re: telnet access to pix

[Circusnuts]

Allowing telnet carves a hole in the firewall.  Gil is right- tunnel to
tunnel VPN access & then going back to the firewall (from inside it's
protected domain), from an IP you approve for management (usually a server).
We also use encrypted dial-up boxes, along with remote power on supplies.
If the location is down, you can call the power supply (switch on the
modem), them setup a secure dial session to the firewall.

Phil

- Original Message -
From: "Gil Shulman" <[EMAIL PROTECTED]>
To: "'Frank Kim'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 6:56 AM
Subject: RE: telnet access to pix


> Hi,
>
>
>The PIX firewall doesn't support telnet through the outside interface,
> the exception to that is if the telnet session is through a secured
> connection via VPN & needless to say that you need to configure the telnet
> server to accept specific IP's.
> # In the future OS versions, as far as I know, it will be possible, it is
on
> Cisco's road map.
>
>Gil
>
> -Original Message-
> From: Frank Kim [mailto:[EMAIL PROTECTED]]
> Sent: ???  09 ?? 2001 22:42
> To: [EMAIL PROTECTED]
> Subject: telnet access to pix
>
>
> Hey guys,
> I got eth0= security0 and eth1=security100.  I'm able to telnet from the
> inside network.  Is there any way for me to telnet from the outside?  Pix
> has disabled this by default.
>
> -Frank
>
>
> _
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>
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Re: empty bootflash/flash on a 4500; no tftpdnld, only dnld

[Circusnuts]

Xmodem works...  Do you have another router (like a 2500) that you can
install that 4 Meg boot flash in a free bay.  I usually pull the image into
that second bay of the 2500 router, then physically transfer it to the
4500/4700 router.  Your right- they are not quite as smooth as the 3600
(when getting into IOS trouble).

Phil

- Original Message -
From: "Rama, Subu" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 7:18 AM
Subject: empty bootflash/flash on a 4500; no tftpdnld, only dnld


> Dear groupstudy:
> We have a 4500M with empty bootflash/flash. We are at the rommon
prompt
> and have access only to "dnld". No "tftpdnld" or "xmodem" commands
> available.
>
> Thought dnld was probably the older name for xmodem and tried using it.
> No success. Each time a new line is received from the sending xmodem
program
> (pro-comm plus), dnld tries to interpret it as a command.
>
> We searched www.cisco.com a lot but I can't find any documentation on the
> "dnld" command.
>
> Any help in getting this 4500 up is appreciated.
>
> Thank you
> Subu
>
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
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RE: loadbalancing with NIC's

[Bob Vance]

Thanks, Howard.
(at least this means that my posts *are* being seen on the list :)


>Loadsharing and failover aren't always the same problem, although
>they often are related.

Right.  Originally, I was just looking for a failover solution and found
that Intel supported *both* "Automatic Load Balancing" *and* failover
-- out of the box, so to speak (note the term "Balancing" vs. "sharing"
:)

HP supports failover, but not sharing (except with aggregation, like
FEC), so this was an unexpected bonus.


-
Tks        | 
BV     | 
Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
Vox 770-623-3430   11455 Lakefield Dr.
Fax 770-623-3429   Duluth, GA 30097-1511
=





-Original Message-
From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 11, 2001 9:27 AM
To: [EMAIL PROTECTED]
Subject: RE: loadbalancing with NIC's


>Howard,
>Did you see either of my posts on this issue.
>I think that they hit the list, but I heard nary a peep.  In fact, this
>has happened on my last few posts to the list -- I see them, but *no*
>one responds.  I'm starting to get paranoid :)


My fault.  I was just somewhat swamped and wanted time to think about
your reply.

Credit where credit is due -- feel free to post this directly to the
list.

>
>
>>  Otherwise, the 802.1D spanning tree algorithm will block more
>>than one card;
>
>I don't think that this is correct (yikes !! :)
>If the server is not acting as a bridge how could the two connections
>matter, vis-a-vis STP.

I suppose I was thinking more of the server acting as a bridge.  If
it does so, it has the potential to autodetect a spanning tree
failure.

Other than a vague suspicion that somewhere, somehow, some servers
will screw up their ARP tables this way, I can't see any objection.
Not being a server person, I don't have detailed familiarity with the
Intel teaming approach, but your description doesn't cause me to
relax about the possibility of ARP problems.

It's funny, but in many of my internal discussions with primarily
optical networking folks, "Ethernet" and "bridging" get ignored a lot
with the hype of "Ethernet everywhere."  Questions about broadcast
propagation, ARP, etc., get blank looks.
>.
>
>This relates to a scenario I described a short while back,
>  [which I never got a response to]
>the only
>difference being that the 2 ports on the (NT) server were connected
>to different switches (which addresses your concern about the single
>point of failure at the switch).
>
>I had raised a question as to why both NICs couldn't answer and get
some
>kind of load balancing on the input, as well.  I got no response from
>the list.  But, upon reflection, I'm thinking that devices seeing the
>ARP reply are supposed to clear or update their cache if they have a
>different MAC cached (I'm too lazy to go look at the RFC).  Thus there
>could be a wholotta ARPing going on.

There's a grand question:  when does load balancing actually buy you
anything and where should it be applied?  My intuition tells me that
for the ordinary sorts of servers, it is unlikely to buy much in
performance.  If you are concerned with throughput on the server
interface(s), going to faster connectivity -- FastEtherchannel,
Gigabit Ethernet, etc., may help more than independent interfaces in
the same subnet.  Most servers are going to max out at 200-300 Mbps
of traffic from a network; it would be rare to find one that actually
could use 400-1000 Mbps.

Loadsharing and failover aren't always the same problem, although
they often are related.

>
>...
>Actually, this makes no sense -- the ARP reply isn't a broadcast :|
>
>So I wonder why it wouldn't work for both NICs to reply.
>
>What happens when a requestor sees two replies to an ARP request ?
>Does he accept the first and drop the second?
>Accept the first, use it for his original IP packet, then update his
ARP
>cache with the second reply and subsequent packets use the second
>MAC address?


Without delving into the RFCs, I suspect it's implementation dependent.

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TCP port for Napster

[rnvol18]

I researched this and Napsters TCP port is 6699 not 6969.
Hope this Helps.
---R N---


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RE: loadbalancing with NIC's

[Bob Vance]

Interesting.

Intel supports load balancing ("adapter teaming"), but it says that it
only does so on output, implying that only the "primary" adapter
responds to ARP requests (until a failure, when the "secondary" takes
over all functions, providing for failover as well as load sharing).

I had earlier posted a question as to why the Intel would work this way,
wondering why both NICs couldn't respond to ARPs.  I hadn't thought
about the NICs alternating in ARP responses, which, it seems, would also
work -- and make more sense.

-
Tks        | 
BV     | 
Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
Vox 770-623-3430   11455 Lakefield Dr.
Fax 770-623-3429   Duluth, GA 30097-1511
=





-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Kenneth
Sent: Sunday, February 11, 2001 8:53 AM
To: [EMAIL PROTECTED]
Subject: Re: loadbalancing with NIC's


The 6509 will see it as 2 separate MAC addresses. Based on my
conversation
with Ipmetrics engineer (i think it was them) the way it functions is
this:

Server A has ip 192.168.1.5

The NIC that is capable of loadbalancing maintains two unique MAC
addresses.

Everytime a client generates an arp request, it gives out MAC Address 1
When Another client generates an arp request, it gives out MAC address 2
It does this by doing a round-robin

Based on this, incoming requests are done via static load-balancing,
meaning, there is a static mapping of client-MAC to server-MAC. In case
of a
large network, statistically, this will provide an equal load on both
ports.

The switch will not use STP to block ports since there are two different
MAC
address on two different ports.

Hope this helps!

Kenneth Lorenzo

Moahzam Durrani <[EMAIL PROTECTED]> wrote in message
ED49D16A9BE4D41189C000104B2E399864C08D@sj-exchange">news:ED49D16A9BE4D41189C000104B2E399864C08D@sj-exchange...
>
> We are planning to connect a server with a single   NIC that supports
> faultolerance , redudndancy and load balancing.  How does a C6509
treat a
> Nic that is connected to two of its ports (same vlans)
> Mo Durrani
> IS&T
> WYSE\EDS
> phone:408-473 1246
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
>
>
> _
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> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>


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Re: Signs of LANE Incompatability (Nortel & Cisco) ???

[Alex Kuhn, MCSE, CCNA]

We had Centillions and 5000 Series at our edge and at our core, and had such problems
getting them to connect to our Cisco Core routers with ATM LANE that Cisco provided a
special IOS version for our routers to keep it running.  I was told it was built just
for our network.

We ended up dumping all our nortel gear, and all the ATM, and going straight Cisco 
GigE.

Where we used to have a major outage a couple times a month with Nortel/Cisco/ATM, we
haven't had one in 8 months with Cisco/Cisco/GigE.

Alex

Lauren Child wrote:

> Circusnuts wrote:
> >
> > I have "ZERO" experience in this arena...  here goes.  I believe I'm
> > seeing the result of compatibility issues between Nortel equipment
> > (Centillion LANE switches) & Cisco gear (7513).
>
> Centillions have a known (or had anyway) incompatibility in the UNI
> address registration.  This was known to affect fore systems cards
> trying to connect to centillions, but I dont see why it wouldnt affect
> cisco's.  Search deja for "Fore" in the bay and nortel comp.dcom.sys
> groups for info.
>
> TTFN
> lauren
>
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Trunking Modes in production environment...

[Pierre-Alex]

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FW: Trunking Modes in production environment...

[Pierre-Alex]

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NxAEMYHkMIHhMIHMMRcwFQYDVQQKEw5WZXJpU2lnbiwgSW5jLjEfMB0GA1UECxMWVmVyaV

Trunking Modes in production environment...

[Pierre-Alex GUANEL]

Hi All,

I have been struggling all morning trying to understand the difference
between the "auto" mode and "desirable" mode. The only difference I have
found is that :

Auto+Auto = no trunking,  where as Desirable + Desirable = trunking

Apart from that the Auto and Desirable behave the same way. So when
would you use "auto" and when would you use "desirable"?

 I am sure that if those modes exist, it is because there is some
practical use for them in a production environment .





Pierre-Alex



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Can Cisco Router be Active Monitor?

[Jonathan Hays]

Token Ring experts, here's a simple problem I'm sure you can help me
with.

As a quick test of an SMC 4016RN MAU, I connected a standard RJ-45 patch
cable from two adjacent ports on the MAU to the Token Ring ports of two
different Cisco 2612 routers.

2612 --to0/0--MAU--to0/0-2612

Here's what I get:

00:42:26: %LINK-5-CHANGED: Interface TokenRing0/0, changed state to
initializing
00:42:47: %TR-3-OPENFAIL: Unit 0, open failed: await new monitor, ring
beaconing
00:42:49: %LINK-3-UPDOWN: Interface TokenRing0/0, changed state to down

Do I really need a Token Ring host to test this thing or can I get one
of the routers to act as the Active Monitor?

Thanks,
Jonathan


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SNMP Server

[Pierre-Alex GUANEL]

HI All,

I am looking for a SNMP server freeware that works with Windows 2000. I don't need 
anything fancy. I just want to collect traps from the network and examine them.

Thank You,



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CCNP Support tips?

[John Neiberger]

It's finally here, the last test for CCNP.  Well, it's on Tuesday, and I'm wondering 
if anyone has any last minute study pointers.  I feel like I've prepared pretty well, 
and a lot of what I think will be on there is stuff I do everyday at work.  However, 
if you've taken it recently and have some tips on areas to focus on while I'm doing 
some last-minute weekend studying, I'd appreciate it!

Right now I'm focusing on routing protocols, interface show and debug commands, packet 
switching mechanisms, and IP.  I've been hearing that there actually isn't too much 
appletalk or IPX, so I'm not digging as deeply there.

Any other tips?  (Without violating the NDA, of course )

Thanks,
John


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Cat3100\2503 Router for sale

[Gordon Olson]

I have Catalyst 3100 24 port ethernet switch for sale with integrated
Cisco 2503 router (router on a blade).  The router is 8MB/8MB
configurations.  They
run the same IOS as 2503's, same interfaces, etc. Works great, Will also
consider a trade for a 2504, I need a TR interface.

WS-C3100<- part number of switch
http://www.cisco.com/warp/public/cc/pd/si/casi/ca3000/prodlit/c3100_ds.htm

WS-X3011<- part number of router blade
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3ks/ws_x3011.htm

I will let this go for $800.00.  If you are thinking of adding a
2503 to your lab, and also need a switch, this is a great way to go. 2503's
on ebay are going for $600+. 2503's have 2 serial, 1 ethernet, 1 bri
interfaces.

And a Cat3100\2503 just sold on ebay for $975
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1212099584

Gordon
[EMAIL PROTECTED]

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Re: How to pronounce "TACACS"?

[Circusnuts]

My boss is from Tennessee & it is called Tack'an.  When the Tack'an server
goes down, we Pang'it must :-)


- Original Message -
From: "Zhiping Li" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 4:20 AM
Subject: How to pronounce "TACACS"?


> As title.
> thanks a lot.
>
> __
> Do You Yahoo!?
> Get personalized email addresses from Yahoo! Mail - only $35
> a year!  http://personal.mail.yahoo.com/
>
> _
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Re: SNMP Server

[Justin Emilio]

Kiwi's Syslog  is a great little program. You  can download it for free from
www.download.com.



Justin Emilio
CCNA, CCDA, CSE
MM Internet
888-654-4971
- Original Message -
From: "Pierre-Alex GUANEL" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 10:20 AM
Subject: SNMP Server


> HI All,
>
> I am looking for a SNMP server freeware that works with Windows 2000. I
don't need anything fancy. I just want to collect traps from the network and
examine them.
>
> Thank You,
>
>
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>

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RE: SNMP Server 3 COM

[Pierre-Alex]

Thanks for the link.

Do all Syslog servers capture traps?  I have a 3 COM Syslog server on my
network but could not find any option related to SNMP. Is it a default
behavior that I am not aware of?

Pierre-Alex

-Original Message-
From: Justin Emilio [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 11, 2001 2:31 PM
To: Pierre-Alex GUANEL; [EMAIL PROTECTED]
Subject: Re: SNMP Server


Kiwi's Syslog  is a great little program. You  can download it for free from
www.download.com.



Justin Emilio
CCNA, CCDA, CSE
MM Internet
888-654-4971
- Original Message -
From: "Pierre-Alex GUANEL" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 10:20 AM
Subject: SNMP Server


> HI All,
>
> I am looking for a SNMP server freeware that works with Windows 2000. I
don't need anything fancy. I just want to collect traps from the network and
examine them.
>
> Thank You,
>
>
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>

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frame relay questions

[charles paver]

Hi. Im having some problems understanding frame relay, and would benefit 
from some good tips! Below are some of the questions I have.
 
1.  Is there a way to allow frames enter your network from 2 routers, so you 
can analyze the packets?  (This is in a back to back configuration only)  

 
2.  The router that acts as the frame switch, must it also be the dce end 
for the clock rate?
 
3.  Why must the dlci's match in a back toback configuration?  They 
need not match when over the link?
 
4.  Why dont I need an ip address in a point to point connection?
 
Thanks a lot.  Any tips would be appreciated, and this also will help 
others!
 
 Get your FREE download of MSN Explorer at http://explorer.msn.com">http://explorer.msn.com

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Why are my posts so distorted ???

[Circusnuts]

I've tried HTML & Plain Text, but I still get words swapped around & numbers
in the middle of my sentences.  I'm using regular MS products on my PC.

Any Ideas- Paul ???
Phil

PS- now the question is: will this distress signal come out legible enough
:-0

- Original Message -
From: "Circusnuts" <[EMAIL PROTECTED]>
To: "Zhiping Li" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 3:28 PM
Subject: Re: How to pronounce "TACACS"?


> My boss is from Tennessee & it is called Tack'an.  When the Tack'an server
> goes down, we Pang'it must :-)
>
>
> - Original Message -
> From: "Zhiping Li" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, February 11, 2001 4:20 AM
> Subject: How to pronounce "TACACS"?
>
>
> > As title.
> > thanks a lot.
> >
> > __
> > Do You Yahoo!?
> > Get personalized email addresses from Yahoo! Mail - only $35
> > a year!  http://personal.mail.yahoo.com/
> >
> > _
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
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>

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RE: Why are my posts so distorted ???

[Pierre-Alex]

I got your e-mail fine! Just a thought:  Are you using some type of mail
encryption?


Pierre-Alex

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Circusnuts
Sent: Sunday, February 11, 2001 12:12 PM
To: [EMAIL PROTECTED]
Subject: Why are my posts so distorted ???

I've tried HTML & Plain Text, but I still get words swapped around & numbers
in the middle of my sentences.  I'm using regular MS products on my PC.

Any Ideas- Paul ???
Phil

PS- now the question is: will this distress signal come out legible enough
:-0

- Original Message -
From: "Circusnuts" <[EMAIL PROTECTED]>
To: "Zhiping Li" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 3:28 PM
Subject: Re: How to pronounce "TACACS"?


> My boss is from Tennessee & it is called Tack'an.  When the Tack'an server
> goes down, we Pang'it must :-)
>
>
> - Original Message -
> From: "Zhiping Li" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, February 11, 2001 4:20 AM
> Subject: How to pronounce "TACACS"?
>
>
> > As title.
> > thanks a lot.
> >
> > __
> > Do You Yahoo!?
> > Get personalized email addresses from Yahoo! Mail - only $35
> > a year!  http://personal.mail.yahoo.com/
> >
> > _
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>

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RE: A inquiry about ARP behavior, vendors, and differences

[Priscilla Oppenheimer]

At 10:21 AM 2/11/01, Bob Vance wrote:
> >because sometimes removing the default
> >gateway didn't cause a problem.
>
>That's interesting.  I've never run across an OS implementation like
>that (that I know of :), but I've been pretty much limited to Windoze
>and various Unices.  Can you remember some specific examples.

I think it was Windows 3.1 with NetManage's TCP/IP stack. And it was only 
certain versions of NetManage.

Priscilla



>Now that I think about it, though, I believe that I *do* vaguely
>remember configuring some kind of network device that asked something
>like "ARP for addresses?" -- and maybe it was "ARP for non-local
>addresses?".  I would guess that I said "No", not really knowing what
>it was asking and always using a default route :)
>
>I know that Windoze does *not* default to ARP for non-local, as RAJ just
>also showed, but it *does* support the "route-to-self".
>Linux behaves the same way.
>
>-
>Tks| 
>BV | 
>Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
>Vox 770-623-3430   11455 Lakefield Dr.
>Fax 770-623-3429   Duluth, GA 30097-1511
>=
>
>
>
>
>
>-Original Message-
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Priscilla Oppenheimer
>Sent: Saturday, February 10, 2001 6:20 PM
>To: [EMAIL PROTECTED]
>Subject: Re: A inquiry about ARP behavior, vendors, and differences
>
>
>At 05:35 PM 2/10/01, Raj Singh wrote:
> >NOTE: Long email / question ... regarding ARP and Proxy ARP behavior
>with
> >different vendors OS.
> >
> >A inquiry about ARP behavior, vendors, and differences.
> >
> >Does the way a host machine behave during the ARP process differ
>amongst
> >different OS manufacturers, in relationship to when Proxy ARP can be
> >implement and when it can't be.
>
>Yes. You would have to do some testing to determine which ones ARP for
>non-local stations and which don't. (It sounds like you already did some
>testing.) When I used to teach the CIT class, one of the "bugs" we
>inserted
>was to remove the default gateway in the PC. The goal was to make it
>impossible for the PC to reach non-local stations. We also had to insert
>"no proxy arp" in the router config, because sometimes removing the
>default
>gateway didn't cause a problem. We were at the mercy of whatever TCP/IP
>implementation happened to be on the PC. Different vendors, different
>OSs,
>different versions worked differently.
>
>One other trick is to set the default gateway to the station's own
>address.
>For some strange reason, on some OSs this causes the station to ARP for
>non-local addresses.
>
>Priscilla
>
>
>
>
> >This inquiry should not be mistaken with "is proxy ARP a good idea or
>bad
> >idea" question. I just want to find some behavior facts out. Thanks.
> >
> >Given the following situation:
> >
> >  ClientA   ClientB
> >   |  |
> >||
> >  |
> >  |
> >  X
> >  {ROUTER}
> >  Y
> >   |
> >   |
> >|-|
> > |
> >  ClientC
> >
> >Settings:
> >
> >ClientA: 192.168.12.5 /24
> >ClientB: 192.168.12.6 /24
> >ClientC: 192.168.20.101 /24
> >
> >Interface X on Router: 192.168.12.1 /24
> >Interface Y on Router: 192.168.20.1 /24
> >Proxy ARP enabled on both router interfaces
> >
> >None of the clients have been configured with a default gateway
>setting.
> >
> >The operating systems are Windows 98. (Though if you prefer you can say
>it
> >is NT 4.0)
> >
> >The basic statement that I have a question about:
> >
> >According to Jeff Doyle's Routing TCP/IP vol. 1, book on page 69-70 in
> >quotes below -
> >
> >"... For example, a host 192.168.12.5/24 needs to send a packet to
> >192.168.20.101/24, but is not configured with default gateway
>information
> >and therefore does no know how to reach a router. It may issue an ARP
> >request for 192.168.20.101; the local router, receiving the request and
> >knowing how to reach network 192.168.20.0, will issue an ARP reply with
>it's
> >own data link identifier in the hardware address field. In effect, the
> >router has tricked the local host into thinking that the router's
>interface
> >is the interface of 192.168.20.101. All packets destined for that
>address
> >will be send to the router. ..."
> >
> >The question itself:
> >
> >The question I have with this is that under a Windows environment at
>least
> >in my experience, The decision making process is as follows when trying
>to d
> >o an address resolution (ARP Request).
> >
> >Sender looks at it's own IP address and Subnet Mask compares it to the
> >target machines IP address to determine if on the same subnetwork. If
>it is
> >so . an ARP request is issued. But if the Sender's IP address and the
>Target
> >'s IP address are not part of the same subnetwork . the sending machine
> >looks for it's default gateway an

Re: Can Cisco Router be Active Monitor?

[Priscilla Oppenheimer]

A router can be the Active Monitor. You must have some other problem. Be 
sure not to use the Ring In or Ring Out ports (except to connect MAUs). 
Check your cables. Reset the MAU ports. Take two aspirin, get some sleep. &;-)

Priscilla

At 10:14 AM 2/11/01, Jonathan Hays wrote:
>Token Ring experts, here's a simple problem I'm sure you can help me
>with.
>
>As a quick test of an SMC 4016RN MAU, I connected a standard RJ-45 patch
>cable from two adjacent ports on the MAU to the Token Ring ports of two
>different Cisco 2612 routers.
>
>2612 --to0/0--MAU--to0/0-2612
>
>Here's what I get:
>
>00:42:26: %LINK-5-CHANGED: Interface TokenRing0/0, changed state to
>initializing
>00:42:47: %TR-3-OPENFAIL: Unit 0, open failed: await new monitor, ring
>beaconing
>00:42:49: %LINK-3-UPDOWN: Interface TokenRing0/0, changed state to down
>
>Do I really need a Token Ring host to test this thing or can I get one
>of the routers to act as the Active Monitor?
>
>Thanks,
>Jonathan
>
>
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Priscilla Oppenheimer
http://www.priscilla.com

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ATM ADSL question

[Fears Michael S SSgt 18 CS/SCBT]

We recently purchased an Avidia 8000 to support ADSL requirements.  At the
time of purchase, our company could not afford on-site installation costs,
so here I am stuck with figuring out how to make this thing talk.  The
package consists of 1 chassis, 1 management module, 1 OC-3 SONET line card,
and 6 twelve port ADSL cards.  To give you a little background on what our
network looks like, we have a semi-meshed ATM backbone using Fore ASX-1000
switches, Cisco Catalyst 5000 & 5500 switches running LANE, and 2 Cisco 7507
routers doing our routing for us.  After reading the Avidia configuration
manual, I see that it does not support LANE in it's current configuration.
We need to be able to extend one of our VLANs to all of the ADSL users.
With HDSL we do this by connecting each HRS modem to a Cisco 10/100 switch
by way of REX modules.  The ADSL solution does not give me this option, but
does give me the OC-3 option.  Question is, how do I interface this Avidia
with our network that is running LANE.  LANE services are being ran by the
Catalysts and routers.  We do not have LANE services running on the ATM
switches.  Ideas?

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RE: How to pronounce "TACACS"?

[Jason Baker]

in OZ it is pronouned (TACK - AKS)

Regards,

Jason Baker
Network Engineer
MCSE, CCNA





-Original Message-
From: Circusnuts [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 12, 2001 4:29 AM
To: Zhiping Li; [EMAIL PROTECTED]
Subject: Re: How to pronounce "TACACS"?


My boss is from Tennessee & it is called Tack'an.  When the Tack'an server
goes down, we Pang'it must :-)


- Original Message -
From: "Zhiping Li" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 4:20 AM
Subject: How to pronounce "TACACS"?


> As title.
> thanks a lot.
>
> __
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Re: IOS firewall feature set

[Igor Glavanic]

You would need a different features of th IOS on  your router.
Here is the the URL with all the details (you will need CCO login):
http://www.cisco.com/warp/customer/432/features.html

Perhaps you will need more RAM as well. Use IOS uprade planer on TAC to
learn the upgrade path. You can download the software from there as well.
I think your IOS must have letter "o" in order to support firewall.

Cheers

Igor Glavanic


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Re: CCNP Support tips?

[Priscilla Oppenheimer]

Lots of ISDN, including stuff you might never run into at work.

See my troubleshooting flash cards at http://www.priscilla.com if you 
haven't already.

Good luck. I know you'll do well. I've seen your answers to this list!

Priscilla

At 10:46 AM 2/11/01, John Neiberger wrote:
>It's finally here, the last test for CCNP.  Well, it's on Tuesday, and I'm 
>wondering if anyone has any last minute study pointers.  I feel like I've 
>prepared pretty well, and a lot of what I think will be on there is stuff 
>I do everyday at work.  However, if you've taken it recently and have some 
>tips on areas to focus on while I'm doing some last-minute weekend 
>studying, I'd appreciate it!
>
>Right now I'm focusing on routing protocols, interface show and debug 
>commands, packet switching mechanisms, and IP.  I've been hearing that 
>there actually isn't too much appletalk or IPX, so I'm not digging as 
>deeply there.
>
>Any other tips?  (Without violating the NDA, of course )
>
>Thanks,
>John
>
>
>Find the best deals on the web at AltaVista Shopping!
>http://www.shopping.altavista.com
>
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Priscilla Oppenheimer
http://www.priscilla.com

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RE: Cat3100\2503 Router for sale

[Pierre-Alex]

Hi Gordon

I have a Cisco2504 I would like to trade.

Pierre-Alex

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Gordon Olson
Sent: Sunday, February 11, 2001 1:35 PM
To: [EMAIL PROTECTED]
Subject: Cat3100\2503 Router for sale

I have Catalyst 3100 24 port ethernet switch for sale with integrated
Cisco 2503 router (router on a blade).  The router is 8MB/8MB
configurations.  They
run the same IOS as 2503's, same interfaces, etc. Works great, Will also
consider a trade for a 2504, I need a TR interface.

WS-C3100<- part number of switch
http://www.cisco.com/warp/public/cc/pd/si/casi/ca3000/prodlit/c3100_ds.htm

WS-X3011<- part number of router blade
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3ks/ws_x3011.htm

I will let this go for $800.00.  If you are thinking of adding a
2503 to your lab, and also need a switch, this is a great way to go. 2503's
on ebay are going for $600+. 2503's have 2 serial, 1 ethernet, 1 bri
interfaces.

And a Cat3100\2503 just sold on ebay for $975
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1212099584

Gordon
[EMAIL PROTECTED]

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4006 and Appletalk Zone Seed Router

[trammer]

I have a quick question for someone who can give me confirming information
on whether or not the Catalyst 4006 will support being an Appletalk Zone
Seed Router?

If you have any reference links that state this it would be even better.

Maybe I didn't go far enough into the documentation, but I couldn't seem to
find a paragraph stating this, that is why I ask if anyone has tested this
or has more info.


Thanks,

Adam


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CCNA 2.0 Router sim and switch sim

[manoj kumar]

Hi,

I have a used copy of CCNA 2.0  Router sim and switch sim
which helped me to clear my ccna and CCNP switching..

If You are interested in it please wirte to me

Regards


kumar

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2612 Backup Service

[Robert M. Cramer]

Dial up connectivity:

I have my field offices using 2612's with a T1 WIC - If I use the AUX port
and attach a modem to that port using a 56k modem - are there any limitation
on the AUX port that would prohibit me achieving 56k through put on a normal
dial up line?

Rob C.

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ISDN dialout

[Jim Bond]

Hello,

I'm wondering if I can put a delay, say 10 seconds, on
a dialer interface so that ISDN will NOT come up
immediately after interesting traffic comes?

Thanks in advance.


Jim

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OSPF: ASBR/ABR

[jenny . mcleod]

Done it, yes.  Problems, no.
But this will depend almost entirely on what routers you're using, how much
memory they have, how big your network is, the design of your network, and
zillions of other factors that are not going to be the same in your network
as they are in mine.

Head for your lab and test it under something approaching *your* network
conditions.

JMcL
-- Forwarded by Jenny Mcleod/NSO/CSDA on 12/02/2001
11:48 am ---


"West, Karl" <[EMAIL PROTECTED]>@groupstudy.com on 10/02/2001
02:27:14 am

Please respond to "West, Karl" <[EMAIL PROTECTED]>

Sent by:  [EMAIL PROTECTED]



To:   "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
cc:


Subject:  OSPF: ASBR/ABR



Need suggestion:

Has anyone ever implemented OSPF where they had their router been an ASBR
and a ABR at the same time and if so was there any problems? I have to
connect a non OSPF router to my AGG router (ABR). I really don't want to do
any redistribution on the ABR routers but the powers that be are cheap :-)
Before I even go into the lab I just want to get some feed back from
anyone.

Thanks
Karl

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Free Sniffer

[AABAN34]

http://www.cs.umd.edu/~cpopescu/NetAnalyzer/

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Re: ISDN dialout

[tv]

http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/1rb
ook/1rintrfc.htm#xtocid1667710

backup delay command

tv
- Original Message -
From: "Jim Bond" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 6:48 PM
Subject: ISDN dialout


> Hello,
>
> I'm wondering if I can put a delay, say 10 seconds, on
> a dialer interface so that ISDN will NOT come up
> immediately after interesting traffic comes?
>
> Thanks in advance.
>
>
> Jim
>
> __
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Re: ISDN dialout

[Santosh Koshy]

Jim,

I dont think you can just specifiy a time delay for the ISDN to kick
in. What you can do, is queue the packets in a buffer until a specified time
has reached, before initiating a dial. This is acheived by issuing the
"dialer hold-queue" command. Let me give u an example.

dialer hold-queue  timeout 

 = can be within the range of 0-100
 =  0 to unlimited

So in your case, where u want to start the dial after 10 secs, you can do
the following :=
dialer hold-queue 20 timeout 10

The above command will hold 20 packets in the queue OR wait for 10 secs
before dialing; whicever comes first. If you think 50 packets is too low,
you can increase it to a max of 100.

Hope that helps,
Santosh Koshy
---
Communications Analyst




"Jim Bond" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hello,
>
> I'm wondering if I can put a delay, say 10 seconds, on
> a dialer interface so that ISDN will NOT come up
> immediately after interesting traffic comes?
>
> Thanks in advance.
>
>
> Jim
>
> __
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Re: ISDN dialout

[Santosh Koshy]

The "backup delay command" is only for Backup interfaces... It cannot be
used to control a primary links dial settings...

""tv"" <[EMAIL PROTECTED]> wrote in message
005301c09495$d6bb2200$2501a8c0@phat23">news:005301c09495$d6bb2200$2501a8c0@phat23...
>
http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/1rb
> ook/1rintrfc.htm#xtocid1667710
>
> backup delay command
>
> tv
> - Original Message -
> From: "Jim Bond" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, February 11, 2001 6:48 PM
> Subject: ISDN dialout
>
>
> > Hello,
> >
> > I'm wondering if I can put a delay, say 10 seconds, on
> > a dialer interface so that ISDN will NOT come up
> > immediately after interesting traffic comes?
> >
> > Thanks in advance.
> >
> >
> > Jim
> >
> > __
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> > Get personalized email addresses from Yahoo! Mail - only $35
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What is 6500 OSR?

[Jack Yu]

Does anybody know what is a 6500 OSR platform?
Somthing relates to optical?
Can find anything in detail on CCO.

Thanks
Jack




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Re: How does one decipher switch back plane numers....

[Santosh Koshy]

Hello people I think I found my answer... I had a hard time..
PhewPlease correct me If I'm wrong... I thought I'd share it with those
that would like to know.

switches being advertised saying (10gb backplane, 1Gb backplane, e.t.c.)
Q) What does this number actually mean?
A)  This is a number that specifies the vendor's specification for maximum
bandwidth processing capability. So for example a switch is being advertised
as 1.5gb backplane... and it has 10 ports and each port can run at
100mb/sec. The calcuation will equal to 100 * 10 = 1Gb/sec . As u can see
the backplane is not going to be congested as the max is 1.5Gb/sec and the
maximum traffic load is 1Gb/sec.

Q) How do they come up with this figure?
A) I STILL DONT KNOW...

Q) What do they mean by active backplane and passive backplane and which is
better?
A)  Backplanes are often described as being either active or passive. Active
backplanes contain, in addition to the sockets, logical circuitry that
performs computing functions. In contrast, passive backplanes contain almost
no computing circuitry. Passive backplanes are better becuase it makes
easier to repair faulty components and to upgrade to new components. So for
example, if a module on a switch gets ruined, you only need to change the
module, not the entire switch.




""Santosh Koshy"" <[EMAIL PROTECTED]> wrote in message
9643av$6n4$[EMAIL PROTECTED]">news:9643av$6n4$[EMAIL PROTECTED]...
> I have seen switches being advertised saying (10gb backplane, 1Gb
backplane,
> e.t.c.)
>
> Q) What does this number actually mean?
>
> Q) How do they come up with this figue?
>
> Q) What do they mean by active backplane and passive backplane and which
is
> better?
>
> Thanks,
> Santosh Koshy
>
>
>
>
> _
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Re: ISDN dialout

[Jack Yu]

Santosh,

I am afraid the dialer-hold queue will not wait 10 secs before dialing, it
just tells the router
to wait for the ISDN to come up, meanwhile hold the 20 packets for 10 sec,
if the ISDN does not come up within the timeout period, the router drops the
packets.
It does not delay the ISDN calls.

I think Jim better tell us what he is trying to accomplish.

Thanks
Jack

-
""Santosh Koshy"" <[EMAIL PROTECTED]> wrote in message
967jsi$dit$[EMAIL PROTECTED]">news:967jsi$dit$[EMAIL PROTECTED]...
> Jim,
>
> I dont think you can just specifiy a time delay for the ISDN to
kick
> in. What you can do, is queue the packets in a buffer until a specified
time
> has reached, before initiating a dial. This is acheived by issuing the
> "dialer hold-queue" command. Let me give u an example.
>
> dialer hold-queue  timeout 
>
>  = can be within the range of 0-100
>  =  0 to unlimited
>
> So in your case, where u want to start the dial after 10 secs, you can do
> the following :=
> dialer hold-queue 20 timeout 10
>
> The above command will hold 20 packets in the queue OR wait for 10 secs
> before dialing; whicever comes first. If you think 50 packets is too low,
> you can increase it to a max of 100.
>
> Hope that helps,
> Santosh Koshy
> ---
> Communications Analyst
>
>
>
>
> "Jim Bond" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Hello,
> >
> > I'm wondering if I can put a delay, say 10 seconds, on
> > a dialer interface so that ISDN will NOT come up
> > immediately after interesting traffic comes?
> >
> > Thanks in advance.
> >
> >
> > Jim
> >
> > __
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> > Get personalized email addresses from Yahoo! Mail - only $35
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> >
>
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Cisco Network Academy

[Arthur Simplina]

For those taking courses at Cisco Network Academy,

Are you able to access the Academy online courses? I cannot access my course 
and the assessment server from home since last week. I talked to our 
instructor and asked if I am using AOL because another student had the same 
case as me. He advised that I clear my browser's history cache which I did 
but to no avail.

The site underwent maintenance February 3. I am going to school tomorrow to 
access the site and verify if my computer access at home has a problem.

Thanks for your response.
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Re: General Networking Question

[george]

Your parnter can still use a dial up connection into your machine. If you
want to support more than one connection you will need to upgrade to server
but for one person the professional version is fine. (it has been a while
and my memory if foggy, I think you can have up to ten connections into
professional if it is the same as nt workstation) Just enter an ip address
into the phone number section of dial up networking and it should "dial" in
over the cable modem. This will also give you the added benefit of ppp.
 As for the previous remarks about not using your computer as a server, you
will just have to check into that, but seeing as how you are working with
someone and not running a business, ie charging people to host a web page on
your computer I would think you should be fine with that as well. Not much
different that using napster as I see it.
""Stan Bowman"" <[EMAIL PROTECTED]> wrote in message
01c09260$6cea8b40$[EMAIL PROTECTED]">news:01c09260$6cea8b40$[EMAIL PROTECTED]...
> Hi there to everyone.  I have a computer question I need help with.  I am
> not super-technical with computers so forgive any of my ignorance.  My
> question relates to networking and cable modems.  I am running an
> application for my business from my computer.  My business partner lives
in
> another town and she would like to be able to access the software from her
> location.  I checked with the software manufacturer and they said that the
> software supports this.  They said that we can install the application on
> both machines and that the database will reside only on my machine (the
> host).  Then, they said we need to establish a "network" between the two
> machines so that the remote machine can map a drive to my machine.
>
> My partner needs to map a drive to my computer so that when she logs in,
she
> can point to the database located on my machine and us it for the
> application.  She is actually running the application on her machine, but
> through a mapped drive she is pointing to a database on my computer.
>
> Obviuosly, I could use dial-up networking and have her dial up my machine
> and map a drive that way.  This is not the desired option for a couple
> reasons.  First, my computer is NOT running NT server right now.  As I
> understand it, I would need to upgrade my machine to Windows NT Server
> before she could dial into mine.  Second, the performance over the phone
> line would most likely be too slow and negate the benefit of networking
the
> application.
>
> My question is how can we network our to machines together using our cable
> modems.  We both access the internet via cable modems.  Both our machines
> are running win2000 (millenium).  Both of us have static ip addresses so I
> was hoping we could somehow use this to network them together.  We can
ping
> each others machine through DOS without any problem, so I know that the
> communication works.
>
> I would welcome any suggestions on how we can solve this problem.  Once
> again, the goal is to be able to map a drive from my partner's computer to
> mine so when she logs into the application on her machine, she can browse
to
> my computer and select the database.
>
> Thanks in advance for your help.  Please email me if you have any
questions
> or solutions.  Thanks!!
>
> Stan
> [EMAIL PROTECTED]
>
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RE: How does one decipher switch back plane numers....

[Fears Michael S SSgt 18 CS/SCBT]

Q) How do they come up with this figure?

Really what this is in reference to is the switching fabric. Many times you
hear it reffered to as backplane capacity. The switching fabric is the
shared highway that all bits traverse to get from one port to the next. The
size of the switching fabric is defined by its width in bits times the speed
in MHZ that it transmits those bits. For example:

The Catalyst 6000 has a fabric that is 256 bits wide operating at 62.5
MHz/sec. 256 X 62.5 MHz = 16 Gbps. 

This is half duplex so the actual calculation would be a 32 Gbps data
highway.  

-Original Message-
From: Santosh Koshy [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 12, 2001 11:42 AM
To: [EMAIL PROTECTED]
Subject: Re: How does one decipher switch back plane numers


Hello people I think I found my answer... I had a hard time..
PhewPlease correct me If I'm wrong... I thought I'd share it with those
that would like to know.

switches being advertised saying (10gb backplane, 1Gb backplane, e.t.c.)
Q) What does this number actually mean?
A)  This is a number that specifies the vendor's specification for maximum
bandwidth processing capability. So for example a switch is being advertised
as 1.5gb backplane... and it has 10 ports and each port can run at
100mb/sec. The calcuation will equal to 100 * 10 = 1Gb/sec . As u can see
the backplane is not going to be congested as the max is 1.5Gb/sec and the
maximum traffic load is 1Gb/sec.

Q) How do they come up with this figure?
A) I STILL DONT KNOW...

Q) What do they mean by active backplane and passive backplane and which is
better?
A)  Backplanes are often described as being either active or passive. Active
backplanes contain, in addition to the sockets, logical circuitry that
performs computing functions. In contrast, passive backplanes contain almost
no computing circuitry. Passive backplanes are better becuase it makes
easier to repair faulty components and to upgrade to new components. So for
example, if a module on a switch gets ruined, you only need to change the
module, not the entire switch.




""Santosh Koshy"" <[EMAIL PROTECTED]> wrote in message
9643av$6n4$[EMAIL PROTECTED]">news:9643av$6n4$[EMAIL PROTECTED]...
> I have seen switches being advertised saying (10gb backplane, 1Gb
backplane,
> e.t.c.)
>
> Q) What does this number actually mean?
>
> Q) How do they come up with this figue?
>
> Q) What do they mean by active backplane and passive backplane and which
is
> better?
>
> Thanks,
> Santosh Koshy
>
>
>
>
> _
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>


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Re: 4006 and Appletalk Zone Seed Router

[Priscilla Oppenheimer]

Does the Catalyst 4006 even support AppleTalk routing? I don't think it does.

In the Cisco world, a "seed router" isn't anything special. It's simply a 
router where you have configured a cable range and one or more zones. In 
order to do this, the router must support AppleTalk routing. (A non-seed 
router is one that doesn't have this information configured. It picks it up 
from a router that does have it configured.)

Priscilla

At 07:27 PM 2/11/01, trammer wrote:
>I have a quick question for someone who can give me confirming information
>on whether or not the Catalyst 4006 will support being an Appletalk Zone
>Seed Router?
>
>If you have any reference links that state this it would be even better.
>
>Maybe I didn't go far enough into the documentation, but I couldn't seem to
>find a paragraph stating this, that is why I ask if anyone has tested this
>or has more info.
>
>
>Thanks,
>
>Adam
>
>
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Priscilla Oppenheimer
http://www.priscilla.com

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Re: Cisco Network Academy

[FREDL L AZARES]

We have the same situation at Southwestern College. For the meantime you
can go to http://students.netacad.net.

On Sun, 11 Feb 2001 21:44:03 -0500 "Arthur Simplina"
<[EMAIL PROTECTED]> writes:
> For those taking courses at Cisco Network Academy,
> 
> Are you able to access the Academy online courses? I cannot access 
> my course 
> and the assessment server from home since last week. I talked to our 
> 
> instructor and asked if I am using AOL because another student had 
> the same 
> case as me. He advised that I clear my browser's history cache which 
> I did 
> but to no avail.
> 
> The site underwent maintenance February 3. I am going to school 
> tomorrow to 
> access the site and verify if my computer access at home has a 
> problem.
> 
> Thanks for your response.
> _
> Get your FREE download of MSN Explorer at http://explorer.msn.com
> 
> _
> FAQ, list archives, and subscription info: 
> http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to 
> [EMAIL PROTECTED]
> 

GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
http://dl.www.juno.com/get/tagj.

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Wanted: Reviews on Two New Books

[John Neiberger]

I notice that Routing TCP/IP, Vol. II is out.  Have any of you had a chance to buy it 
and read it yet?  If so, I'd love to find it how it is, especially its coverage of BGP 
relative to Halabi's excellent book.

Second, I see that Sybex has a brand new CCIE study guide out.  Have any of you heard 
anything about this text?  

Neither book has any reviews on Amazon, and I'm just curious if they're as good as 
they look.

Thanks,
John


Find the best deals on the web at AltaVista Shopping!
http://www.shopping.altavista.com

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Switching exam

[Fears Michael S SSgt 18 CS/SCBT]

I'm taking the switching exam soon. I've read the BCMSN courseware book and
have lots of hands-on experience. However, I have not done any multicast
configurations in the real world. Is multicasting hit pretty hard on the
exam? Anyone have any good references for the subject? Thanks, Fears

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RIF and dlsw

[Garry Baker]

Guys,

I am having some problems understanding what the rif should be fro a dlsw connection. 
I understand how to get the rif for a standard srb network but can't get my head 
around dlsw terminating the rif. If you had the following scenerio, what would be the 
rif from host a to host b and vice versa?




Host-a   -- ring 2 - -bridge 1 --virtual ring 10 --  virtual ring 30 --bridge 5-- ring 
8 



Bakes

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Re: Trunking Modes in production environment...

[Larry Lamb]

The differences between auto and desirable is that desireable trys to become
a trunk, auto only is poked at with DTP frames requesting it act as a trunk.
With auto being the default for Fast/Gig Ethernet, you won't have trunks
coming up in places that you don't expect.  The other end will have to be
set in on or desirable to actively convert the link to a trunk.

""Pierre-Alex GUANEL"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi All,
>
> I have been struggling all morning trying to understand the difference
> between the "auto" mode and "desirable" mode. The only difference I have
> found is that :
>
> Auto+Auto = no trunking,  where as Desirable + Desirable = trunking
>
> Apart from that the Auto and Desirable behave the same way. So when
> would you use "auto" and when would you use "desirable"?
>
>  I am sure that if those modes exist, it is because there is some
> practical use for them in a production environment .
>
>
>
>
>
> Pierre-Alex
>
>
>
> _
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Re: Switching exam

[Kenneth]

I used cisco lan switching.

read the dense and sparse mode... and the conversion of multicast ip to its
layer 2 address

Fears Michael S SSgt 18 CS/SCBT <[EMAIL PROTECTED]> wrote in
message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I'm taking the switching exam soon. I've read the BCMSN courseware book
and
> have lots of hands-on experience. However, I have not done any multicast
> configurations in the real world. Is multicasting hit pretty hard on the
> exam? Anyone have any good references for the subject? Thanks, Fears
>
> _
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Re: SNMP Server

[Larry Lamb]

I haven't found any freeware, but check out http://www.bttsoftware.co.uk/.
The author doesn't have any prices listed, but sofware seems to work pretty
well.

""Pierre-Alex GUANEL"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> HI All,
>
> I am looking for a SNMP server freeware that works with Windows 2000. I
don't need anything fancy. I just want to collect traps from the network and
examine them.
>
> Thank You,
>
>
>
> _
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LLC type 3?

[ajwhitaker]

In the All-in-one ccie study guide by Giles, he states on page 141 the three
types of LLC implementations.  In the chapter he talks much about LLC type 1
and type 2, but I don't see when LLC type 3 (acknowledged connectionless)
would be used.  Anyone know if type 3 LLC is used and, if so, where I would
commonly see LLC type 3 frames?


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Re: Switching exam

[Z]

I would suggest getting your hands on the Switching Exam Cram book. I used
the BCMSN and this to prepare for mine. I found this book excellent for the
last week of craming before the exam. It's a more relaxed text and puts all
the pieces of the puzzle together nicely before the test. Good luck on the
test and let us know how you do. =o)

---
This has been an Eyez Only streaming e-mail broadcast...We are watching.

~ NetEyez
---
- Original Message -
From: Kenneth <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 11:25 PM
Subject: Re: Switching exam


> I used cisco lan switching.
>
> read the dense and sparse mode... and the conversion of multicast ip to
its
> layer 2 address
>
> Fears Michael S SSgt 18 CS/SCBT <[EMAIL PROTECTED]> wrote in
> message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > I'm taking the switching exam soon. I've read the BCMSN courseware book
> and
> > have lots of hands-on experience. However, I have not done any multicast
> > configurations in the real world. Is multicasting hit pretty hard on the
> > exam? Anyone have any good references for the subject? Thanks, Fears
> >
> > _
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> >
>
>
> _
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Re: PPP Multilink or Cisco BoD (Correction on Typo)

[jenny . mcleod]

There is at least one subtle difference between using dialer load-threshold
with ppp multilink and without (or at least between using ppp multilink and
using hdlc).  It actually appears to be a different command, but with the
same syntax.  There is a bug that means that only outgoing load is used in
the BoD calculations.  This appears to be written up as a 'feature' in some
of the doco (sorry, in a bit of a hurry and don't have time to look up the
BugID or links - yell if you really want them and I'll chase them later).
In other words, 'dialer load-threshold 150 either' will ignore the 'either'
and just look at outgoing load.

However, over ppp multilink, the 'inbound' and 'either' options do work.

JMcL
-- Forwarded by Jenny Mcleod/NSO/CSDA on 12/02/2001
03:56 pm ---


"Adam Burgess" <[EMAIL PROTECTED]>@groupstudy.com on 11/02/2001
08:04:03 pm

Please respond to "Adam Burgess" <[EMAIL PROTECTED]>

Sent by:  [EMAIL PROTECTED]



To:   "Santosh Koshy" <[EMAIL PROTECTED]>
cc:   <[EMAIL PROTECTED]>


Subject:  Re: PPP Multilink or Cisco BoD (Correction on Typo)


Sorry - previous message should have read:

Correct - although you don't need to specify 'ppp multilink' in order to
bring up multiple channels, you only need to use 'dialer load-threshold'.
This enables bandwidth on demand and seems to provide the same throughput
and functionality as ppp multilink.

If you specify dialer load-threshold AND ppp multilink, then the interfaces
switches to 'industry standard' ppp multilink.

I was curious if there were any benefits (ie. bandwidth utilisation, delay,
CPU time, memory, etc) to be gained by using bandwidth on demand without
ppp
multilink.

Adam
> - Original Message -
> From: "Santosh Koshy" <[EMAIL PROTECTED]>
> Newsgroups: groupstudy.cisco
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, February 11, 2001 3:46 PM
> Subject: Re: PPP Multilink or Cisco BoD
>
>
> > The dialer load-threshold feature, works in combination with ppp
> > multilink...
> > What "dialer load-threshold" does is, define the load level that must
be
> > exceeded on the first ISDN B channel before the router attempts to
bring
> up
> > a second B channel for a multilink PPP connection.
> >
> > ""Adam Burgess"" <[EMAIL PROTECTED]> wrote in message
> > 011001c093dd$116e7140$[EMAIL PROTECTED]">news:011001c093dd$116e7140$[EMAIL PROTECTED]...
> > > To all DDR gurus:
> > >
> > > Are there any benefits in using the Cisco Proprietary =
> > > Bandwidth-on-Demand feature (ie. dialer load-threshold), rather than
=
> > > using ppp multilink (other than the fact the ppp multilink is
standard)?
> > >
> > > Regards
> > >
> > > Adam Burgess
> > > Brisbane, Australia
> > >
> > > _
> > > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com/list/cisco.html
> > > Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
> > >
> >
> >
> > _
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> >
>
> _
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Router for sale 1004s

[Dost]

I have couple 1004 for sale, let me know if
anyone intrested.  I do not know how much
they are going for, it will be bit less thab ebay
price.


DOst


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Re:3600 Flash

[CCNA]

Thanks but how  to download IOS to the new Flash via your console port =
(or any other way) from  rommode.>???

=20
"hmt" <[EMAIL PROTECTED]> wrote in message =
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> When you remove the old flash, there goes your IOS.  For some reason =
the=20
> "rom" IOS doesn't allow you to download images via tftp from rom mode. =
 You=20
> will need to download IOS to the new Flash via your console port from=20
> rommode.
> One way to get around is if you have a flash card (not SIMMS), copy an =
IOS=20
> image in there before you replace the SIMMS.
>=20
> [EMAIL PROTECTED] ("CCNA") wrote in
> <001e01c08b57$33a12bb0$0101a8c0@Ejaz1>:=20
>=20
> >Hi All,
> >I need some help.I am replacing the flash memory of my 3620
> >router=20
> >from 16MB (8x2) to 32 (16x2). I have taken out both flash SIMMS and
> >inserted the new Flash SIMMs
> >(They are blank).After I inserted the Flash SIMMs the router's =
"syetem"
> >LED started  blinking constantly.  I have also replaced the DRAMs =
from
> >24 MB to 64 (16x4) but they are fine.
> >Following is the error message
> >
> >System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE =
SOFTWARE
> >(fc1)
> >Copyright (c) 1999 by cisco Systems, Inc.
> >C3600 processor with 65536 Kbytes of main memory
> >Main memory is configured to 64 bit mode with parity disabled
> >
> >loadprog: error - Invalid image for platform
> >e_machine =3D 43, cpu_type =3D 30
> >boot: cannot load "flash:"
> >System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELRELEASE
> >SOFTWARE (fc1)
> >.
> >.
> >romon1>.
> >
> >What I want to ask is is it possible that we can insert a brand new
> >flash in the router and install the new IOS in it provided there is =
no
> >flash Memory in it  on other slots or I can only upgrade not replace =
the
> >flash SIMMs with the new ones???
> >
> >What should I do to make it work ?? I have a 3640 router also.Can it =
be
> >of my help in any way ? How can I insert the new flash of 16MB in
> >3640 which has 8 MB SIMM and copy the IOS in it and place it back to
> >3620  ?? Partition like thing ..
> >Please giude me.
> >
> >Thanks to All
> >
> >
> >_
> >FAQ, list archives, and subscription info:
> >http://www.groupstudy.com/list/cisco.html Report misconduct and
> >Nondisclosure violations to [EMAIL PROTECTED]=20
> >
> >
>=20
> _
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http://www.groupstudy.com/list/cisco.html
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>=20

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Re: 3600 Flash

[CCNA]

Thanks Chris and Pawel,
 The problem was solved by the Xmodem
from rommmon>. That was really a very very slow procedure and took about 1.5
hours to transfer the image through the Console cable.

CCNA


- Original Message -
From: "Pawel Sikora" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, January 31, 2001 7:41 PM
Subject: Re: 3600 Flash


> - Original Message -
> From: "Chris Supino" <[EMAIL PROTECTED]>
> To: "CCNA" <[EMAIL PROTECTED]>; <>
> Sent: Wednesday, January 31, 2001 12:38 PM
> Subject: RE: 3600 Flash
>
>
> > CCNA,
> >
> > You will need to replace the image on the flash chips via console cable
> > (Xmodem) after you insert the new flash chips. This is the only way to
do it
> > on a 3600. I believe on a 2600 you have TFTP download available from
Rommon
> > mode.
> >
> ...
> > What should I do to make it work ?? I have a 3640 router also.Can it be
of
> > my help in any way ? How can I insert the new flash of 16MB in 3640
> > which has 8 MB SIMM and copy the IOS in it and place it back to 3620
??
> > Partition like thing ..
> > Please giude me.
>
> Yes, this should work except of necessary partitioning and flashing again
> old software of 3640 into old partition.
>
> Without 3640 you can do it as follows:
>  Install old 2x8 fsimms and boot old software
>  Partiton flash into 2 equal size partitions  (8MB each)
>  Flash any old software less than 8Mbit into one partition
>  Install mix of old and new fsimms (total of 24M flash should appear)
>  Partition once again into 2 or 3 partitions of 8MBs
>  Flash partition beginning at new fsimm boundary
>  Install both new fsimms
>  Finally partition and flash as desired.
>
> P/
>
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FS: Cisco 2926T Switch

[D Wou]

For Sale: Cisco 2926T Switch

- supervisor module and same CLI as the Cisco 5000
- (ISL) Trunking
- 24 10/100Mbps Autosensing ports
- 2 100Mbps Uplink ports
- 2 Power Supplies
- Manuals
- Console cable kit

Check here for more info:
http://www.cisco.com/univercd/cc/td/doc/pcat/ca2926.htm

Mod Port Model Serial # Versions
---  -- - 
1 2 WS-X2926T 006835862 Hw : 2.1
Fw : 2.4(1)
Fw1: 2.4(1)
Sw : 4.5(4)
2 24 WS-X2926L 006776401 Hw : 1.1
Fw : 2.4(1)
Sw : 4.5(4)

DRAM FLASH NVRAM
Module Total Used Free Total Used Free Total Used Free
-- --- --- --- --- --- --- - - -
1 16384K 9786K 6598K 8192K 3840K 4352K 256K 109K 147K


Price: $2000.00 + Delivery (Excellent condition)

Dick
[EMAIL PROTECTED]

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Re: ISDN dialout

[Jim Bond]

Jack and other mighties,

We have two routers at each office, one for frame
relay and the other one for ISDN backup. I don't want
ISDN line come up as soon as frame relay is down
'cause it might be a glitch. How do I put a delay on
ISDN dialer interface? I don't think "backup delay"
will work here.

Thanks in advance.


Jim

--- Jack Yu <[EMAIL PROTECTED]> wrote:
> Santosh,
> 
> I am afraid the dialer-hold queue will not wait 10
> secs before dialing, it
> just tells the router
> to wait for the ISDN to come up, meanwhile hold the
> 20 packets for 10 sec,
> if the ISDN does not come up within the timeout
> period, the router drops the
> packets.
> It does not delay the ISDN calls.
> 
> I think Jim better tell us what he is trying to
> accomplish.
> 
> Thanks
> Jack
> 
> -
> ""Santosh Koshy"" <[EMAIL PROTECTED]> wrote in
> message
> 967jsi$dit$[EMAIL PROTECTED]">news:967jsi$dit$[EMAIL PROTECTED]...
> > Jim,
> >
> > I dont think you can just specifiy a time
> delay for the ISDN to
> kick
> > in. What you can do, is queue the packets in a
> buffer until a specified
> time
> > has reached, before initiating a dial. This is
> acheived by issuing the
> > "dialer hold-queue" command. Let me give u an
> example.
> >
> > dialer hold-queue  timeout 
> >
> >  = can be within the range of 0-100
> >  =  0 to unlimited
> >
> > So in your case, where u want to start the dial
> after 10 secs, you can do
> > the following :=
> > dialer hold-queue 20 timeout 10
> >
> > The above command will hold 20 packets in the
> queue OR wait for 10 secs
> > before dialing; whicever comes first. If you think
> 50 packets is too low,
> > you can increase it to a max of 100.
> >
> > Hope that helps,
> > Santosh Koshy
> > ---
> > Communications Analyst
> >
> >
> >
> >
> > "Jim Bond" <[EMAIL PROTECTED]> wrote in message
> >
>
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > Hello,
> > >
> > > I'm wondering if I can put a delay, say 10
> seconds, on
> > > a dialer interface so that ISDN will NOT come up
> > > immediately after interesting traffic comes?
> > >
> > > Thanks in advance.
> > >
> > >
> > > Jim
> > >
> > >
> __
> > > Do You Yahoo!?
> > > Get personalized email addresses from Yahoo!
> Mail - only $35
> > > a year!  http://personal.mail.yahoo.com/
> > >
> > > _
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> to [EMAIL PROTECTED]
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> >
> >
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> >
> 
> 
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Re cat 1900 enterprise version

[nandit]

Hi,
I was able to upgrade from the standard edition to the enterprise version on
a switch with the image cat1900EN_9_00_03.bin.bin, but am not getting any
VLAN configuration utilities.Which version is required for VLAN
configuration.
Thanks
Nandit


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Re: Re cat 1900 enterprise version

[Adam Burgess]

Nandit,

The default config for 1900's (at least when upgraded from standard edition)
is to support bridge groups and not VLAN's.  You can change this once you
have the EN software in the menu by going to the System menu and choosing
'Reset system to enable VLANs' (or something like that).  This should enable
VLANs on the switch.

Adam

- Original Message -
From: "nandit" <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Tuesday, February 13, 2001 2:14 PM
Subject: Re cat 1900 enterprise version


> Hi,
> I was able to upgrade from the standard edition to the enterprise version
on
> a switch with the image cat1900EN_9_00_03.bin.bin, but am not getting any
> VLAN configuration utilities.Which version is required for VLAN
> configuration.
> Thanks
> Nandit
>
>
> _
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http://www.groupstudy.com/list/cisco.html
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