See Inline.
Hi,
Can someone please check below, to see if I am going in the right
direction.
I have 3 sites A B C
A wants 500 users. - should be a /23
B wants 2000 users - should be a /21
c unknown up to 200 - should be a /24
IP address range I have is as follows:-
10.225.200.0 to 10
Hi,
Can someone please check below, to see if I am going in the right direction.
I have 3 sites A B C
A wants 500 users.
B wants 2000 users
c unknown up to 200
IP address range I have is as follows:-
10.225.200.0 to 10.225.219.255
I have worked the following:-
For A the range is 10
For a number of years there was a paper on IP addressing by Chuck Semeria on
the 3Com web site. It is no longer there.
Just found it on the NANOG site. 63 page pdf.
www.nanog.org/isp.html Scroll down to "CIDR."
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i
Is this the one you're after?
http://www.3com.com/other/pdfs/infra/corpinfo/en_US/501302.pdf
""Robert Kulagowski"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I remember downloading the tutorial a few years ago. Looks like it's gone
> now - google shows it on the 3com web
Yes, that's the one. Google is usually pretty good; the best link it gave
me was
http://www.3com.com/corpinfo/en_US/technology/tech_paper.jsp?DOC_ID=135 and
that's the one that came up with the blank page.
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=44882&t=44865
-
Go to http://www.packetattack.com/downloads.html
About halfway down the page I have PDF versions posted. 3 files.
MikeS
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I remember downloading the tutorial a few years ago. Looks like it's gone
now - google shows it on the 3com website, but when you go there all you get
is a blank page that says "Technical Papers". Doing a search on the 3Com
website doesn't come up with any hits. Other links on google all point
Yes you can do this but what you probably forgot to do was shutdown
interface vlan 1. Until you shutdown vlan 1 the other vlan you created
will not come up.
Dave
Jeff Harris wrote:
>
> Does anyone know if you can use a VLAN interface for management on an
> IOS-based switch if said VLAN was l
Does anyone know if you can use a VLAN interface for management on an
IOS-based switch if said VLAN was learned via VTP? I was unable to set it up
that way awhile back. I have ran into this awhile back and never did get to
troubleshoot it.
The switch in question was a 3524XL. The VTP server was a
It's not clear what your asking but the switch inband management ip
address and the VTP domain have nothing to do with each other.
Dave
Edward Sohn wrote:
>
> hey all
>
> i've got a question, that seems logical enough, but I can't find any
> explanation/answer for it anywhere on CCO or Cis
SC0 can be placed in any VLAN you specify. All ports default to VLAN 1 so
putting it there may not be prudent depending on your specific security
needs. For example, I have used VLAN 999 in DMZs before as the "managment
rail" for the switches.
HTH
Darren
At 02:13 PM 5/14/2002 -0400, Chris Cha
hey all
i've got a question, that seems logical enough, but I can't find any
explanation/answer for it anywhere on CCO or Cisco Press...
Anyway, if I'm creating a VTP domain with multiple switches and VLANs
and stuff, what do I set the IP addresses to for the switches,
themselves? I mean, they
I tried to set up default IP addressing for my dial up users on a 3640
router. I used a pool of three IP addresses for three lines. The Async group
range has Six ports, but only three have active lines.
Things were fine till the first three users connected. A strange thing was
happening after
hey all have 3
> ethernet ports for 3 ethernet networks.Each subnet will have max. hosts 60
> and we also need to design IP addressing for serial links with max.2 IP
> addresses to conserve IP addresses.
> In the solution it says,
> For
> 60 hosts we need minimum 6 bits ,2^6-2=62 ho
and expansion.
Regards
Oletu
- Original Message -
From: Sarah Parker
To:
Sent: Thursday, December 13, 2001 8:15 PM
Subject: Help with IP Addressing/VLSM- work project [7:29160]
> Hello Everyone,
>
> I am working on a small IP address project and trying
> to figure out VLSM.
&g
PROTECTED])
> wrote:
>
> > Hello Everyone,
> >
> > I am working on a small IP address project and trying
> > to figure out VLSM.
> >
> > Since I am not very good and do not have much
> > experience with IP addressing, I wanted to send this
>
MAIL PROTECTED]
Subject: Help with IP Addressing/VLSM- work project [7:29160]
Hello Everyone,
I am working on a small IP address project and trying
to figure out VLSM.
Since I am not very good and do not have much
experience with IP addressing, I wanted to send this
to make sure what I have is co
: [EMAIL PROTECTED]
Sent: 12/13/2001 11:15 PM
Subject: Help with IP Addressing/VLSM- work project [7:29160]
Hello Everyone,
I am working on a small IP address project and trying
to figure out VLSM.
Since I am not very good and do not have much
experience with IP addressing, I wanted to send this
to
Hello Everyone,
>
> I am working on a small IP address project and trying
> to figure out VLSM.
>
> Since I am not very good and do not have much
> experience with IP addressing, I wanted to send this
> to make sure what I have is correct or if I am really
> wrong on
)
Subnet 5 = 65.85.105.224/27 (255.255.255.224)
At 11:15 PM 12/13/01 -0500, Sarah Parker wrote:
>Hello Everyone,
>
>I am working on a small IP address project and trying
>to figure out VLSM.
>
>Since I am not very good and do not have much
>experience with IP addressing, I wanted
Hello Everyone,
I am working on a small IP address project and trying
to figure out VLSM.
Since I am not very good and do not have much
experience with IP addressing, I wanted to send this
to make sure what I have is correct or if I am really
wrong on this one.
Thanks in advance for any
Yes you can, 12.2.4T
1750># interface Loopback9
1750># ip address 111.11.1.1 255.255.255.254
Dave
Karen Young wrote:
>
> Currently you can't use /31 networks. However, there is an RFC that
> proposes changes that would allow their use on point-to-point links only.
>
> RFC 3021 Using 31-Bit
On Mar 23, 6:42pm, "Erick B." wrote:
}
} /31 support is in 12.2(2)T for most platforms. I tried
} it on serials and it works fine. Haven't tried it on
} LAN interfaces yet, but don't see why it wouldn't
} work.
I have a 2502 in my lab, running:
IOS (tm) 2500 Software (C2500-JK8OS-L), Vers
/31 support is in 12.2(2)T for most platforms. I tried
it on serials and it works fine. Haven't tried it on
LAN interfaces yet, but don't see why it wouldn't
work.
--- "[EMAIL PROTECTED] (John Nemeth)"
wrote:
> On Mar 23, 8:54am, "Howard C. Berkowitz" wrote:
> }
> } >Good.. but you can't h
>why would this be needed?
>
>30 bits works perfect for serial links... Am I missing something?\
It wastes two bits with every subnet. IPv4 address space is not an
infinite resource.
>
"Karen Young" 10/31/01 02:03PM >>>
>Currently you can't use /31 networks. However, there is an RFC tha
On Mar 23, 8:54am, "Howard C. Berkowitz" wrote:
}
} >Good.. but you can't have a subnet with 31 bits that would leave 2
} >"hosts" and the network address and the broadcast would use them up, so
you
} >end up with 0 hosts per subnet. For point-to-point serial links, you'd
} >usually use
Who needs to worry about subnetting with the one day exam? (disclaimer: this
is only a joke, no flames please)
-Original Message-
From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 31, 2001 12:19 PM
To: [EMAIL PROTECTED]
Subject: Re: IP addressing Subnetting
why would this be needed?
30 bits works perfect for serial links... Am I missing something?
>>> "Karen Young" 10/31/01 02:03PM >>>
Currently you can't use /31 networks. However, there is an RFC that
proposes changes that would allow their use on point-to-point links only.
RFC 3021 Using 31-B
y, October 31, 2001 2:03 PM
Subject: Re: IP addressing Subnetting [7:24712]
> Currently you can't use /31 networks. However, there is an RFC that
> proposes changes that would allow their use on point-to-point links only.
>
> RFC 3021 Using 31-Bit Prefixes on IPv4 Point-to-Point L
>Good.. but you can't have a subnet with 31 bits that would leave 2
>"hosts" and the network address and the broadcast would use them up, so you
>end up with 0 hosts per subnet. For point-to-point serial links, you'd
>usually use a /30 (255.255.255.252) which gives you 4 addresses per sub
Currently you can't use /31 networks. However, there is an RFC that
proposes changes that would allow their use on point-to-point links only.
RFC 3021 Using 31-Bit Prefixes on IPv4 Point-to-Point Links. A. Retana,
R. White, V. Fuller, D. McPherson. December 2000. (Format: TXT=19771
bytes) (Sta
Good.. but you can't have a subnet with 31 bits that would leave 2
"hosts" and the network address and the broadcast would use them up, so you
end up with 0 hosts per subnet. For point-to-point serial links, you'd
usually use a /30 (255.255.255.252) which gives you 4 addresses per subnet
subnetting scenarios and came across this stuf
> which is confusing for me.We have been given a network range of
>
> 10.60.0.0/24.
> We have 3 routers which are connected back to back and they all have 3
> ethernet ports for 3 ethernet networks.Each subnet will have max. hosts 60
&
. hosts 60
and we also need to design IP addressing for serial links with max.2 IP
addresses to conserve IP addresses.
In the solution it says,
For
60 hosts we need minimum 6 bits ,2^6-2=62 hosts per subnet.
By subnetting 10.60.0.0/24
we get 4 subnets with 26 bit mask.
10.60.0.0/26
10.60.0.64/26
I thought Lou Rossi's Cisco & IP Addressing was a good book. I've used the
workbook pages to brush-up through the years & have taught from it a time or
two. Unfortunately- no book can do it all. IP addressing schemes for
Classless into Classful, redistribution, CIDR, &am
3 com has a great paper on IP addressing by Chuck
Semeria. U must have a look at it. I have learned all
of it from there only.
Imran.
--- John Neiberger
wrote:
> Designing Addressing Architectures by Howard
> Berkowitz
>
> Learn it, live it, love it.
>
> >>>
Designing Addressing Architectures by Howard Berkowitz
Learn it, live it, love it.
>>> "Nabil Fares" 6/13/01 9:55:10 AM >>>
Greetings all,
Any real good books out there that covers ip addressing. design and
implementation.
thanks,
Message Posted at:
ht
Cisco and IP Addressing is good you might also try:
ISBN: 1928994016 - IP Addressing and Subnetting Including IPv6 Published by
Syngress it has good sections on NAT, VLSM, BOOTP, DHCP, Multicast and IPv6
Both will give you fairly good ground work. Howard a little more advanced.
Karl
Hmmm, some fellow named Berkowitz or something like that wrote a fairly
decent book on the topic. :-)
Seriously,
I highly recommend "Designing Addressing Architectures" by Howard Berkowitz.
I've also heard good things about "Cisco & IP Addressing" by Lou Rossi.
Greetings all,
Any real good books out there that covers ip addressing. design and
implementation.
thanks,
Message Posted at:
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are the winning bidder just say you were from Groupstudy.
I am selling Cisco Internet Routing Architectures Book. And a few others
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so often for more . Please, view them all
Use extended ping.
-Original Message-
·¢¼þÈË: Santosh Koshy <[EMAIL PROTECTED]>
ÐÂÎÅ×é: groupstudy.cisco
ÊÕ¼þÈË: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
ÈÕÆÚ: 2001Äê3ÔÂ3ÈÕ 7:30
Ö÷Ìâ: Re: Secondary IP addressing
>How are they connected ?
>
>
>""Ro
AIL PROTECTED]...
> Via a back to back cable.
>
> -Original Message-
> From: Santosh Koshy [mailto:[EMAIL PROTECTED]]
> Sent: Friday, March 02, 2001 3:13 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Secondary IP addressing
>
>
> How are they connected ?
>
>
Via a back to back cable.
-Original Message-
From: Santosh Koshy [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 02, 2001 3:13 PM
To: [EMAIL PROTECTED]
Subject: Re: Secondary IP addressing
How are they connected ?
""Roberts, Timothy"" <[EMAIL PROTECTED]&g
How are they connected ?
""Roberts, Timothy"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>
>
> I am setting up secondary IPs on two of my serial interfaces. I can ping
> both IPs on ROUTER B from the other ROUTER A. The problem is that I
cannot
> ping the
I am setting up secondary IPs on two of my serial interfaces. I can ping
both IPs on ROUTER B from the other ROUTER A. The problem is that I cannot
ping the secondary IP on ROUTER A from ROUTER B. What would cause this?
Router A
int serial 0
ip address 10.1.1.1 255.255.255.0
ip address 128.1
RFC 950 was the original subnetting rule that did not
allow the use of subnet zero. The new RFC 1812 does
allow the use of subnet zero. This assumes that you are
using a routing protocol that is aware of the difference
between 131.107.0.0/16 and 131.107.0.0/17.
Yes it is. The 172.16.4.255 ip address would be the 172.16.4.252 subnet
broadcast address though.
- Original Message -
From: Jack <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 25, 2001 6:41 PM
Subject: Re: Ip addressing que
Ok, so subnet zero is not usable, I understand that.
Is the last subnet usable even though it contains the 255 portion of the
address?
>What subnets to we get from this combo?...
>First subnet= 172.16.4.4
>Second subnet= 172.16.4.8
>Third subnet= 172.16.4.12
>...
>Last subnet= 172.16.4.252
the case, they will merely recognize it and route it. The
> > broadcast address in a subnet does not see the entire network, it
> broadcasts
> > only to its entire sub-network. Referring to our example once more,
this
> > would be the address 172.16.4.7 and only the two host a
> >
> > > > 172.16.4.5 and 172.16.4.6
> > > >
> > > > Subnet zero is that address space which is not taken up by the
>subnets.
> > > In
> > > > our example this would be 172.16.4.1;172.16.4.2;172.16.4.3
> > > > Routers do no
ch is not taken up by the
subnets.
> > In
> > > our example this would be 172.16.4.1;172.16.4.2;172.16.4.3
> > > Routers do not use subnet zero for anything unless instructed to do so
> and
> > > if this is the case, they will merely recognize it and route i
e, they will merely recognize it and route it. The
> > broadcast address in a subnet does not see the entire network, it
> broadcasts
> > only to its entire sub-network. Referring to our example once more,
this
> > would be the address 172.16.4.7 and only the two host addresses on t
ess 172.16.4.7 and only the two host addresses on the
>subnet would hear a broadcast from it.
>
>Hope this clarifies things.
>
>
>
> >From: Jennifer Cribbs <[EMAIL PROTECTED]>
> >Reply-To: Jennifer Cribbs <[EMAIL PROTECTED]>
> >To: [EMAIL PROTECTED
; only to its entire sub-network. Referring to our example once more, this
> would be the address 172.16.4.7 and only the two host addresses on the
> subnet would hear a broadcast from it.
>
> Hope this clarifies things.
>
>
>
> >From: Jennifer Cribbs <[EMAIL PROTECTED]&g
ibbs <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: RE: Ip addressing question
>Date: Thu, 25 Jan 2001 10:38:38 -0500
>
>Subnet zero is the network address that the routers uses for routing to the
>network and the broadcast address sends a broadcast to the entire networ
>Subnet zero is the network address that the routers uses for routing to the
>network and the broadcast address sends a broadcast to the entire network
>everytime it is used, which means it goes to all subnets. Therefore, these
>are not used as host addresses. They encompass the whole network.
Subnet zero is the network address that the routers uses for routing to the
network and the broadcast address sends a broadcast to the entire network
everytime it is used, which means it goes to all subnets. Therefore, these
are not used as host addresses. They encompass the whole network. O
Could anyone explain to me why Subnet zero and the last subnet are not
normally used?? I see why 2 host addresses are reserved in every subnet
(network address and broadcast address), but I never understood why 2
networks are not used. What is the difference between these networks and the
>From the subnet mask, you will get four subnets and they are
.0 network
.64 network
.128 network and
.192 network.
If you are not going to make use of ip subnet-zero command, then you
will be wasting 1/4 of the ip addresses since the 0 network won't be
used which equals 25% of the total address a
Guys,
While I am studying for the BSCN, I found the following question concerning
IP addressing:
Assuming your clients do not support subnet-zero, how many of your class C
addresses are wasted by using the subnet mask of 255.255.255.192 and not
using VLSM?
a. 10%
b. 25%
c. 50%
d
Have a Great Day!!
Jennifer Cribbs
[EMAIL PROTECTED]
_
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Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
I currently have one floor where my routers and servers are. These are
address as 10.100.1.x and 10.100.2.x addresses with a subnet of /16. I'm
adding two more floors. However, in adding two more floors can I address
these floors as for instance 10.100.11.x, 10.100.12.x, 10.100.13.x, and
10
I currently have one floor where my routers and servers are. These are
address as 10.100.1.x and 10.100.2.x addresses with a subnet of /16. I'm
adding two more floors. However, in adding two more floors can I address
these floors as for instance 10.100.11.x, 10.100.12.x, 10.100.13.x, and
10
John,
Try IP Addressing and Subnetting Including IPv6 by J.D. Wenger and Robert
Rockwell ISBN 1-928994-01-6 Published by Syngress this year @ $59-95 US,
$92-95 CAN, £37-95 UK
Karl HUTCHINSON
- Original Message -
From: "JohnMail" <[EMAIL PROTECTED]>
To: <[EMAIL P
Hi:
If you like streaming media then for your IP subnetting needs check
http://www.learntosubnet.com/
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, May 17, 2000 3:59 AM
Subject: Re: Can you recommend a good IP addressing boo
It seems to me that someone around here made mention of a book called
"Designing Addressing Architectures..." (can't remember the full title, sorry
Howard!) That one is definitely on my must-purchase-soon list.
> Can anyone recommend a IP addressing book that is good for t
try this link.
http://www.3com.com/nsc/501302s.html
anil
On Tue, 16 May 2000, Circusnuts wrote:
> Can anyone recommend a IP addressing book that is good for the remedial & for
>teaching others (I have the 3Com stuff already)...
>
> T
Can anyone recommend a IP
addressing book that is good for the remedial & for teaching others (I
have the 3Com stuff already)...
Thanks !!!
Phil
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