From: ÓΠ˳¸Õ (youshungang@hotmail.com)
Date: Sun Sep 07 2003 - 03:27:44 GMT-3
Hi group#,when I worked on a lab recently,I encountered a problem about
isis neighbor adj.
Here is my topology:
r3-s1--(frame-relay)--s0-r4-| e0
|
s0
below is the detailed config:
r3:
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
!
interface Serial0.1 point-to-point
ip address 10.13.1.2 255.255.0.0
ip router isis
frame-relay interface-dlci 301
!
interface Serial1
ip address 10.34.1.1 255.255.0.0
ip router isis
encapsulation frame-relay
frame-relay interface-dlci 304
frame-relay lmi-type ansi
!
router isis
net 01.3333.3333.3333.00
r4:
interface Ethernet0
ip address 10.4.1.1 255.255.0.0
ip router isis
!
interface Serial0
ip address 10.34.1.2 255.255.0.0
ip router isis
encapsulation frame-relay
frame-relay interface-dlci 403
frame-relay lmi-type ansi
!
router isis
net 01.4444.4444.4444.00
I found that r3 and r4 cannot form isis neighbors.
When i debug the isis neighbor adj,here is the output:
r3#debug isis adj
IS-IS Adjacency related packets debugging is on
r3#
00:03:14: ISIS-Adj: Encapsulation failed for L1 LAN IIH on Serial1
00:03:15: ISIS-Adj: Encapsulation failed for L2 LAN IIH on Serial1
on r4,there is the same problem.
That confused me.The s0 should send serial IIH instead of LAN IIH since it
is not a lan interface.Why the interface s0 does not behave normally? What
cause this situation?
Who can help out the problem? I wasted too much time on it.
Please clarify it. Thanks a lot for any help!
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