From: lgao (lgao@xxxxxxxxx)
Date: Wed Dec 05 2001 - 17:59:56 GMT-3
Remember couple of month ago, there are threads floating around about how to fi
nd EIGRP AS number on the other side
if you do not know?
I don't know what that guy IOS version was, but from 12.0 above, you can not s
ee the remote site AS number by
tunnng on "debug egirp pac" or "debug ip eigrp "
or "debug eigrp pac hello verbose". You can only see you are sending hello pack
t, but no receiving hello packts.
Now here is an answer how to find remote EIGRP AS number on IP. ( might not be
the rght one)
1.creat access list permit any any
access-list 101 permit ip any any log
2. put it on the link that you want to see the EIGRP hello packet.
3.try the IOS hidden command
"debug ip packet 101 dump"
4.you will be catching whole IP raw packet from this link.
catch the packt from the other side sending to 224.0.0.10 like this
00:42:54: IP: s=192.168.2.7 (Ethernet1), d=224.0.0.10, len 60, rcvd 2
010F5E20: 0100 5E00000A ..^...
010F5E30: AABBCC00 6B010800 45C0003C 00000000 *;L.k...E@.<....
010F5E40: 015815F1 C0A80207 E000000A 0205EE8D .X.q@(..`.....n.
010F5E50: 00000000 00000000 00000000 00000041 ...............A <---------"
41 is the AS number"
010F5E60: 0001000C 01000100 0000000F 00040008 ................
5. read your "Routing TCP/IP vol I" EIGRP part and decode this raw IP packt,
in above case, 4th line of this raw ip packet, 41 is the AS number in Hex, r
emember to convert from Hex, the as
number is 65
Sadly, you can not do the same thing with IPX, if some know how to find IPX EIG
RP remote side AS number, I buy you a
beer. =:-)
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