From: Joseph Brunner (joe@affirmedsystems.com)
Date: Tue Nov 06 2007 - 14:26:07 ART
You are very smart sir indeed.
I was trying to capture using "ip traffic export mode capture" for the same,
but I remembered "T" code is not on the lab.
Thank you,
Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mark
Mahan
Sent: Tuesday, November 06, 2007 12:12 PM
To: George Goglidze; Tarun Pahuja
Cc: srinivas pv; Cisco certification
Subject: RE: find out eigrp AS that I need with debug
I have router 10.212.27.4 in AS 1 and switch 10.212.27.3 in AS 2
I did a 'debug ip packet <ACL matching 224.0.0.10> dump'
*Apr 3 19:02:53.488 UTC: IP: s=10.212.27.3 (local), d=224.0.0.10
(Vlan7), len 60, sending full packet
074002F0: 0100 5E00000A ..^...
07400300: 00119223 14410800 45C0003C 00000000 ...#.A..E@.<....u all
07400310: 0258B1C9 0AD41B03 E000000A 0205EECC .X1I.T..`.....nL <--
BOLD in this line is the destination IP address of 224.0.0.10
07400320: 00000000 00000000 00000000 00000002 ................ <--
BOLD in this line is 5 32bit sections later and is the AS number in the
EIGRP packet of the hello I'm sending.
07400330: 0001000C 01000100 0000000F 00040008 ................
07400340: 0C020102 ....
*Apr 3 19:02:55.039 UTC: IP: s=10.212.27.4 (Vlan7), d=224.0.0.10, len
60, rcvd 2
07912AE0: 0100 5E00000A 00138063 D6DA0800 ..^......cVZ..
07912AF0: 45C0003C 00000000 0158B2C8 0AD41B04 E@.<.....X2H.T..
07912B00: E000000A 0205EECB 00000000 00000000 `.....nK........ <--
BOLD in this line is the destination IP address of 224.0.0.10
07912B10: 00000000 00000001 0001000C 01000100 ................ <-- in
this line is 5 32bit sections later and is the AS number in the EIGRP
packet of the other end.
07912B20: 0000000F 00040008 0C040102 ............
So find E000000A and count 5 32bit sections and that is the AS number.
Mark Mahan
Network Engineer
-------------------------------
CapRock Communications
4400 S. Sam Houston Parkway E.
Houston, Texas 77048
Office: 832 668 2528
mmahan@caprock.com
www.caprock.com
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
George Goglidze
Sent: Monday, November 05, 2007 1:05 PM
To: Tarun Pahuja
Cc: srinivas pv; Cisco certification
Subject: Re: find out eigrp AS that I need with debug
Hi,
I've searched all the internet, google, doccd and whatever I could find
about that.
But no mention you can find out eigrp AS by debugging.
I guess if I have to make neighbor relationship with eigrp of BB router,
there will AS number included in the task, otherwise it will be no
point. At
least I hope so. :)
otherwise I'll have to try all the AS-es from 1 to 65000 ..... :)))))
Good luck,
On 11/5/07, Tarun Pahuja <pahujat@gmail.com> wrote:
>
> Srinivas,
> No ;-(
> Tarun
>
>
> On 11/5/07, srinivas pv <vsrinivas.paturi@gmail.com> wrote:
> >
> > Hi Tarun,
> >
> > This technique worked well with BGP. But when I try with EIGRP, it
> > didn't work. Will this work with EIGRP also?
> >
> > Thanks,
> > Srinivas
> >
> > On Nov 4, 2007 10:31 PM, Tarun Pahuja <pahujat@gmail.com> wrote:
> > > George,
> > > Let me teach you a trick to tackle similar problems.
If
> > you do
> > > not know the AS # of the remote peer, turn on notification on the
> > router and
> > > you will see a similar message:
> > >
> > > *Sep 30 11:37:40.741: %BGP-3-NOTIFICATION: sent to neighbor
10.10.10.22/2
> > > (peer in wrong AS) 2 bytes *0384
> > > *FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 002D 0104 0384 00B4 9601
0202
> > 1
> > > 002 0601 0400 0100 0102 0280 0002 0202 00
> > >
> > > The Hex Value in the Bold will actuall tell you the right AS you
> > should be
> > > peering with ;-)
> > >
> > > You can use the Calculator in Windows XP in scientific mode, enter
> > this
> > > value and then just hit decimal value to get the AS value in
decimals.
> > >
> > > HTH,
> > > Tarun
> > >
> > >
> > >
> > > On 11/4/07, George Goglidze <goglidze@gmail.com> wrote:
> > > > Hello all,
> > > >
> > > > I'm doing some ipexpert labs, and in one of them, they actually
> > don't tell
> > > > you in what AS you need to peer with BB3 from R9.
> > > > I can see packets coming on 224.0.0.10, but I was not able to
find
> > out
> > > what
> > > > AS i need to be in, I turned on all kind of debugs of eigrp.
> > > > as in bgp for example, if you're in wrong AS it tells you,
"neighbor
> > in
> > > > wrong as" blahblah, it is in as XXX.
> > > >
> > > > I could just enter into BB3 I guess, in my dynamips it's not a
big
> > > problem,
> > > > but on the lab, If I have something like that,
> > > > I don't want to have to try all AS-es from <1-65535>
Autonomous
> > system
> > > > number.
> > > >
> > > >
> > > > It's ipexpert's section 25 lab.
> > > >
> > > > Many thanks to everyone and regards,
> > > >
> > > >
> >
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:28 ART