Re: Static Routes and Administrative Distance [7:72495]

2003-07-17 Thread Black Jack
I am skeptical, Tom. Someone, I think it was Howard, researched this as far
back as 9.x releases without finding the AD=0 behavior. I can't support this
as I couldn't find it in the archives and I have not tried it myself. But,
in order to prove that AD=0 never existed one would have to test all
releases, a task that is probably impossible without a museum of hardware.
But I think the burden of proof has to lie with the pro-AD=0 faction given
the history on this issue.


Tom Martin wrote:
> 
> John,
> 
> The behavior changed with the IOS releases. Newer IOS releases
> with
> static routes pointing to an interface will have an
> administrative
> distance of 1, not 0. Older versions will have an
> administrative
> distance of 0. Unfortunately I do not know the exact release in
> which
> the behavior changed.



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Re: route commands [7:72406]

2003-07-17 Thread Black Jack
So I guess it's now 1,000,001 times :-)) Still, I don't blame anyone for 
believing this urban legend of the networking world when authorities such as
Doyle and Caslow continue to propagate it. I just wonder how the AD=0 rumor
ever got started.

However, although the AD=1 for both routes, they are not the same in all
respects. One important difference-- with the interface form, the router
considers any host reachable through that interface to be directly connected
and so ARPs for its address. This does not happen for all hosts with a
numeric next hop.

This might not make a difference in the case given, but suppose your default
route pointed to an interface rather than a numeric next hop?

See 
for a more detailed exmple and explanation.





Sasa Milic wrote:
> 
> This was discussed a milion times; static route that
> points to an interface has AD=1.
> 
> Sasa
> CCIE #8635
> 
> 
> Nakul Malik wrote:
> > 
> > by default, a static route has an AD of 1.
> > If the static route points to an exit interface, the AD=0.
> > 
> > That is the only difference
> > 
> > HTH.
> > 
> > -Nakul
> > 
> > ""Karyn Williams""  wrote in message
> > news:[EMAIL PROTECTED]
> > > We recently added another interface, S1/1, that connects a
> private line to
> > > another school. We are routing 156.3.37.0 to them. Should I
> have route
> > > statements that say
> > >
> > > ip route 156.3.37.0 255.255.255.0 192.168.0.2
> > >
> > >  or
> > >
> > > ip route 156.3.37.0 255.255.255.0 Serial1/1
> > >
> > > Current config:
> > >
> > > ip route 0.0.0.0 0.0.0.0 Serial0/0
> > > ip route 0.0.0.0 0.0.0.0 Serial0/1
> > > ip route 0.0.0.0 0.0.0.0 Serial1/0
> > > ip route 65.165.174.0 255.255.254.0 FastEthernet0/0
> > > ip route 156.3.37.0 255.255.255.0 192.168.0.2
> > > ip route 198.182.157.0 255.255.255.0 65.165.175.253
> > > ip route 207.233.56.0 255.255.255.0 192.168.0.2
> > >
> > >
> > > I am interested if there is a performance difference
> between these two
> > > route statements or any other reason why one would be
> preferred over the
> > > other. TIA.
> > >
> > >
> > >
> > >
> > > --
> > >
> > > Karyn Williams, CNE
> > > Network Services Manager
> > > California Institute of the Arts
> > > [EMAIL PROTECTED]
> > > http://www.calarts.edu/network
> -- 
> 
> Regards,
>   Sasa
>   CCIE #8635
> 
> 




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RE: Tokenring [7:72470]

2003-07-17 Thread Black Jack
B? How can her workstation retain connectivity if it's turned off? Could you
successfully ping it?
A seems right to me.

=?iso-8859-1?q?maine=20dude?= wrote:
> 
> Hi,
>  
> I know that this should be a easy question, I think that the
> answer is B.
> But the book says A, what do you think the answer is?
>  
> If you could also provide a link for a detailed answer that
> would be good.
>  
> What would happen on a simple ring network if one of the users
> turned off her workstation?
>  
> a. Only her workstation would lose connectivity.
> b. None of the workstations would lose connectivity.
> c. The workstations on either side of hers in the ring would
> lose network connectivity.
> d. The network would fail
>  
> Answer: ?
>  
> Thanks in advance
> Dj
> 
> 
> 
> 
> 
> -
> Yahoo! Plus - For a better Internet experience
> 
> 




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RE: For Priscilla [7:71462]

2003-06-27 Thread Black Jack
That is very interesting. Can you give us a little more background about how
your relationship with your publisher went so badly wrong? I for one know
very little about how publisher-author deals work and would like to hear
more, it it's not too painful to relate!

 
> Obviously I made a big mistake in choice of publisher, but who
> could have known? They are one of the most prestigious
> publishers. But their motto is:
> 
> "If a tree falls in the forest and nobody is around to hear it,
> it doesn't matter. At least the other forests didn't get the
> tree."
> 
> Am I bitter? You bet. I was swindled.
> 
> Priscilla



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religious wars [7:70274]

2003-06-06 Thread Black Jack
Old timers will remember Mac vs DOS/Windows. Or UNIX vs DOS. Or Beta vs VHS.
More recent is Linux vs FreeBSD, or one flavor of Linux distribution vs
another. (See http://ars.userfriendly.org/cartoons/?id=19990301 for example.
By the way, if you are not familiar with www.userfriendly.org, you gotta
check it out. Funniest geek-oriented comic strip this side of dilbert)

Anyway, try asking network types what their favorite TFTP server is...
then step back!


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RE: problem...using 2 2509 in my LAB [7:70188]

2003-06-06 Thread Black Jack
No, you type "x", not a number. This sounds more confusing than it is. I
will try to be more clear. You have

PC--2509#1--2509#2--Router

You telnet from PC to 2509#1, then telnet again to 2509#2, then again to
Router. You are now at CLI of Router. If you type
ctrl-shift-6, x
you will end up at CLI of 2509#1. If you type 
ctrl-shift-6, ctrl-shift-6, x
you will end up at CLI of 2509#2.

The process is the same for reverse telnet or regular telnet.

In practice, you can just hold down "ctrl-shift", tap 6 twice, then release
ctrl-shift and type "x". If you do this a lot you will probably find it
convenient to program a shortcut key to ctrl-shift-6, ctrl-shift-6, x if
your emulator has that functionality. Or you can use a keyboard macro program.

Iwan Hoogendoorn wrote:
> 
> so i need to type a NUMBER (of the connected line)in stead of
> the X?
> 
> Thank You




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RE: problem...using 2 2509 in my LAB [7:70188]

2003-06-05 Thread Black Jack
ctrl-shift-6, ctrl-shift-6, x
Type one ctrl-shift-6 for each link in your chain of telnets, then the final
x.



Iwan Hoogendoorn wrote:
> 
> I want to set up my own LAB so that i can remotely log in.
> 
> i have 2 2509 and i want to connect 10 routers and 2 switches
> 
> If i want to login remotely i only can connect to one of te
> 2509(2509#1)
> 
> so ive connected a cable from the 2509#1 port 8 to the console
> port of the other 2509#2
> 
> and on the 2509#2 i have 2 2503's connected 
> 
> 
> if i connect from remote to the i first telnet to the 2509#1
> router.
> What i am going to do now do a reverse telnet to the second
> router 2509#2.
> Now i am on that router(2509#2) ans i am going to do a reverse
> telnet to on of the 2 2503's.
> Thats all still working fine...when i type Crtl-Shift-6-x i
> want to de 1 step back (to the 2509#)but is i do that it is
> going directly back to the first 2509#1.
> 
> What can i do 
> 
> There is one possible option by using the terminal
> escape-character command...
> But i dont know how or what...
> 
> Can someone give me a sugestion?
> 
> Thank You, 
> 
> This is my list with routers:
> 
> 2x 2501
> 2x 2502
> 2x 2503
> 2x 2509
> 1x 4500
> 1x 3630
> 1x 3524
> 1x 2924




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RE: pcmcia flash memory card for 2501 [7:63741]

2003-02-25 Thread Black Jack
Certain models of 2501 have a PCMCIA slot inside the case. I have never
tried to use it, though, and I do not know what it's for. I have always
assumed that it was just a holdover from some older implementation and Cisco
just kept using those boards until the supplies ran out. But I don't know
that for sure.


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RE: ICMP [7:61004]

2003-01-14 Thread Black Jack
Hmm...that suggests that a VLSM-aware redirect would be useful. Send the
mask along with the network address in other words. Does such a thing exist,
or has it ever been proposed?


> Answer: The host can't know about subnet masks being used
> elsewhere. Also, with classless addressing, it can't assume a
> Class A mask for network 10.0.0.0.
> 
> The host can't know for sure that ALL of 10.0.0.0/8 is
> reachable by the router that claims that it is. With
> variable-length subnet masking, classless addressing,
> discontiguous subnets and all the other things people do to
> their network designs, the safest thing for the host to do is
> to place a host-specific route into its table.
> 
> Just thought I'd turn this into a more advanced "lesson." :-)
> 
> ___
> 
> Priscilla Oppenheimer
> www.troubleshootingnetworks.com
> www.priscilla.com
> 
> 
> > 
> >  
> > 
> > Thanks in advance.
> > 
> > -DJ
> > 
> > 
> > 
> > 
> > -
> > With Yahoo! Mail you can get a bigger mailbox -- choose a size
> > that fits your needs
> > 
> > 
> 
> 




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RE: NP-2C ??? [7:59603]

2002-12-20 Thread Black Jack
Look like the ATM Network Processor Module With E3/DS-3 PLIM 
see:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis4000/4000cn/1000npm.htm#21021

Pretty good deal on this I'd say. Did you buy it? Has anyone else noticed
the eBay router prices have fallen significantly lately? Good news for those
of us trying to build labs on the cheap.

[EMAIL PROTECTED] (John Nemeth) wrote:
> 
> There was an auction on eBay recently for a Cisco 4700 with
> NP-2E
> and NP-2C.  The picture shows a card with two coax connectors. 
> I've
> never heard of an NP-2C before and it wasn't listed in the Quick
> Reference Guide that I looked in.  Does anybody know what it
> is?  I'm
> guessing that it might be a DS3 interface.  The auction number
> is
> 2081362264.
> 
> 




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RE: CCIE Vs. BS or MS dergree [7:59481]

2002-12-18 Thread Black Jack
I suppose a CCIE is sort of a Ph.D. of networking. Studying for and taking
the written is the equivalent of coursework, then doing hands-on to prepare
for the lab is like research for your dissertation, the the lab test
represents the oral exam. But I wouldn't stretch the analogy too far. For
one thing the quality and difficulty of computer science graduate schools
varies greatly. Just getting into one of the top programs is probably harder
than CCIE. And for another the two programs don't really test the same
skills, do they? (Though they surely overlap)

Mic shoeps wrote:
> 
> Hello
> 
> I've been arguing with a collegue of mine which one would be
> tougher to achieve. I told him that it would be much more
> harder to have a computer science or a networking degree (you
> have to take the GRE and complete 2 or 3 years of school works)
> than a CCIE, but my collegue think other wise. He literally
> believes that having a CCIE is equivalent of having a Ph.d in
> Networking. I'd like to hear your thought.




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Re: Cat 6 upgrade [7:57551]

2002-11-18 Thread Black Jack
Didn't you like my disk0 idea?  :-)

xxx6509#dir disk0:
Directory of disk0:/

1  -rw-   13201   Sep 18 2002 18:42:48  6509_20020918.cfg
2  -rw-20775248   Sep 18 2002 18:51:00 
c6sup22-po3sv-mz.121-11b.E4.bin

If your Flash card is an ATA, you won't see it with CatOS and it's disk0
with IOS. Check out:

http://www.cisco.com/en/US/products/hw/switches/ps708/prod_configuration_guide09186a008007d312.html


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Re: Cat 6 upgrade [7:57551]

2002-11-18 Thread Black Jack
On  my IOS 6509 the flash card is "disk0" not "slot0".

MADMAN wrote:
> 
> What are you typing?
> 
> Native6506#dir bootflash:
> Directory of bootflash:/
> 
> 1  -rw- 7110024   Mar 29 2002 12:48:52 
> c6msfc2-js-mz.121-4.E1
> 2  -rw- 1611604   Mar 29 2002 12:49:42 
> c6msfc2-boot-mz.121-4.E1
> 3  -rw-  528259   Mar 28 2002 07:19:26 
> DRACO2_RM2.srec.121-4r.E
> 
>   shows the bootflash of the MSFC or RP in this case.
> 
>   a dir slot0: will show the contents of the PCMCIA card in the
> SUP
> module:
> 
> Native6506#dir slot0:
> Directory of slot0:/
> 
> 1  -rw-14780268   Oct 14 2002 10:36:19 
> c6sup12-js-mz.121-13.E.bin
> 
>   Dave
> 
> 
> Patrick Donlon wrote:
> > 
> > Hi
> > 
> > I'm upgrading a CAT6 from OS to IOS but I can't see my flash
> card in the
> > route processor. I have another switch on CatOS and I can't
> see the flash
> > either, any tips???
> > 
> > Cheers
> > 
> > Pat
> -- 
> David Madland
> CCIE# 2016
> Sr. Network Engineer
> Qwest Communications
> 612-664-3367
> 
> "You don't make the poor richer by making the rich poorer."
> --Winston
> Churchill
> 
> 




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Re: If you were gonna' build a dream CCIE lab... [7:55266]

2002-10-10 Thread Black Jack

As long as we're dreaming...how about adding a big whiteboard with Caslow or
Pavlichenko stationed in front?  :-)

Thomas Larus wrote:
> 
> Dream lab
> 
> 2 3640s with 2 FE, 2 t1 serial ints, and ATM 155 (or 2621 with
> two wic-1ts,
> if ATM cannot be part of this dream)
> 
> 3 2610s with two t1 serial
> 
> 3 2611s with 2 t1 serial
> 
> 2 2501s (to be used as backbone routers in scenarios like
> Ipexpert's)
> 
> 1 2523 or 2522 as frame switch and third backbone router to
> connect to
> 
>  Voice equipment -- 2X NM-1V and 2X VIC-2FXS to move about
> among the 2600s
> or 2640s as needed
> 
> 1 LS 1010
> 
> 1 ISDN Simulator
> 
> 2 3550s EMI
> 
> Okay, it's not realistic, but he did say "dream lab".  Just be
> glad I didn't
> make them all 3662s.
> 
> Tom Larus, CCIE #10,014
> 
> ""Colin Weaver""  wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Hi All,
> >
> > I'm looking for opinions on what you would do (buy) if you
> could build
> your
> > own "dream" CCIE home lab.  What equipment would you get
> (Routing &
> > Switching CCIE)?
> >
> > I'm getting some mixed information on what equipment is
> actually used on
> the
> > CCIE lab scenarios.  I've heard, for instance, that the
> Catalyst 5500 is
> > being replaced with the 6500.  Does anyone know where an
> up-to-date
> > equipment list is?
> >
> > Thanks.
> >
> > -Colin
> >
> > P.S. - I'm still searching for ANY 5.x firmware for a
> Catalyst 1900.
> Help.
> 
> 




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Frame LMI [7:55120]

2002-10-08 Thread Black Jack

Any way I can get a more complete look at my Frame LMI than debug gives me?
I would take the complete frame and manually decode it if I could figure out
how to capure it. This is on a production router  but it is lightly loaded
so reasonable debugs are possible. If only I had a Sniffer... but I just
have my trusty Cisco.


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r/s study in tallahassee [7:54801]

2002-10-03 Thread Black Jack

I am looking for R/S Lab study partner(s) in Tallahassee or surrounding area.


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RE: Laptop won't respond to pings [7:54715]

2002-10-02 Thread Black Jack

DOH! Okay, I will wear the dunce cap. I had forgotten about the Cisco VPN
client I had installed. The concentrator I was testing had the same address
as the router does now. I uninstalled the VPN and it's fine now. Excuse the
wasted bandwidth :)


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Laptop won't respond to pings [7:54715]

2002-10-02 Thread Black Jack

This is probably something simple, or maybe it's a Microsoft thing, but my
W2K laptop won't respond to pings or tftp requests. I have a 2621 router and
the laptop plugged into a 2950 switch, all in Vlan1, all extremely simple.
>From the laptop I can ping the switch and router and telnet to the switch
and router. But if I ping the laptop from either, I can see the packets
arrive at the laptop, but it doesn't respond. It also does not respond to a
tftp request from the router. Any ideas? TIA


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RE: BGP [7:54262]

2002-09-26 Thread Black Jack

Not to belabor the obvious, but if you don't want to buy a book right now
there's always good ole CCO.
http://www.cisco.com/warp/public/459/bgp-toc.html
has lots of nuts and bolts and runs 71pp in pdf form. 

I think Halabi's original paper, the one he later expanded into his book,
was once on CCO too. I don't know if it's still there, maybe Ciscopress made
them take it down :)


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Re: 400M console woes [7:54114]

2002-09-26 Thread Black Jack

Well, darn. If its not the cable then I don't know what to try. Guess it's a
boat anchor. :-(
Thanks for the help.


MADMAN wrote:
> 
> Yes.  I just went back in the lab and connected up to a 4000 to
> verify
> what I've been spewing and it works.
> 



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Re: 400M console woes [7:54114]

2002-09-26 Thread Black Jack

Okay, that's the standard DB9 adapter from a console kit. And the rollover
cable, right?

MADMAN wrote:
> 
> That is it, now you need a matching DB9, I'm assuming, for your
> PC but
> the pinout will be 2,3 and 5.
> 



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Re: 400M console woes [7:54114]

2002-09-26 Thread Black Jack

Thanks for your help. I have a bunch of different DB25 adapters but the one
that I think is a real Cisco part has pin 2 yellow, pin 3 black, and pin 7
red and green.

MADMAN wrote:
> 
> Pull the DB25 of fof the router and tell me what color pins are
> in 2,3
> and 7.  If not yel, blk, red then it doesn't much matter what
> line cord
> your using.  You can use either a roll over or straight thru
> what
> determines which will work is the pinout on the end connectors.
> 
>   Dave



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400M console woes [7:54114]

2002-09-25 Thread Black Jack

I cannot get a response from the console port on my ebay "as-is" 4000M
router. Per earlier thread and archives, I think I have the right cable--a
straight through DB9-DB25 modem data cable. Some referred to rollover with
db25 adapter, but I tried all the adapters in my spare part box to no avail.
I'm not sure I have the right adapter because the 4000 console port is DB25
DCE (http://www.cisco.com/warp/public/701/14.html) but the only pinouts I
see are for DB25 DTE. Anyway, I think the whole 4000 series has standard
RS232 at the console port, so a regular cable should be okay.

Also, I tried tera term and hyperterm, all speeds from 1200 to 9600.
Visually, the router seems to power up fine and the console port does not
have any obvious physical defect, but so far I have seen nothing from it. I
am trying to locate a RS232 breakout box to see if ANYTHING is live on the
port, but meanwhile any suggestions? Any way I can get in through the aux
port? I have no idea what may or may not be in the config. I hope I have not
bought a doorstop :-)


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RE: How can I Fill out our unused bandwidth with dummy [7:53970]

2002-09-24 Thread Black Jack

You might try TCPspeed. I have used it in the past to verify CIR (at least
approximately).

http://maximized.com/freeware/tcpspeed/

shojaee wrote:
> 
> Dear sirs,
> 
> I'm a member of technical staff in an ISP site. We have cable
> connection to
> the internet with 512k bandwidth.
> I require to do the following:
> 1- Measure our maximum connection speed to internet.
> 2- Fill out our unused bandwidth with dummy traffic.
> How can i do these? thanks for your prompt attention.
> 
> With best regards
> Hassan Shojaie
> 
> 




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4000 router console cable [7:53981]

2002-09-24 Thread Black Jack

I just acquired a 4000 router and can't get it to respond through the
console port. As usual in this case, I suspect I have a cable problem. I
thought I needed a straight through DB9-DB25 modem cable, but it doesn't
seem to work. I want to make sure I have the right cable before I start
chasing other possibilities. Is this in fact the right cable? I have
searched the archives and looked at several CCO links without a clear answer
(maybe I'm just not smart enough to understand what I'm reading :-)). What
I'd really like is something ultra-simple, like "db-25 pin2 to db-9 pin3"
and so on. Can anyone point that out to me? TIA.


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origin of "split horizon"? [7:53938]

2002-09-24 Thread Black Jack

Can anyone here tell me how the term "split horizon" came to be applied to
routing protocols? Who first used the term and when?


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RE: Static route admin distance [7:53282]

2002-09-17 Thread Black Jack

I agree that it is weird that so many respected sources have this wrong,
especially since it is so easy to test. Thanks to all who replied,
especially Priscilla and also Sasa Milic for pointing to an earlier
discussion on this issue. Maybe this latest rehash will help get the word
out, and our experts will revise their books!! :-)
-Jack



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