[c-nsp] isis adjecency...

[Swati Sharma]

Hi,

I have below topology..

6500 --- 3750 --- crs1

@ 6500 I have created vlan 250, which i am trying to establish isis adj with
one of the sub-interface in crs. From 6500 to 3750 i have created trunk and
allowed vlan 250. Similarly a trunk between 3750 to crs1 (Tengig
subinterface). MTU on 3750 is 9k byte. I am not able to establish isis
adjcency.

I know the issue is with mtu as i checked with enabling ospf and ignore mtu.
But not able to rectify the issue..

6500#debug isis adj-packets vlan 250
IS-IS Adjacency related packets debugging is on
*Mar 21 08:11:32.384 UTC: ISIS-Adj: Sending serial IIH on Vlan250, length
1508
*Mar 21 08:11:34.772 UTC: ISIS-Adj: Sending serial IIH on Vlan250, length
1508
*Mar 21 08:11:37.496 UTC: ISIS-Adj: Sending serial IIH on Vlan250, length
1508
*Mar 21 08:11:40.360 UTC: ISIS-Adj: Sending serial IIH on Vlan250, length
1508
*Mar 21 08:11:42.684 UTC: ISIS-Adj: Sending serial IIH on Vlan250, length
1508

also it is not accepting - hello-password text

RP/0/RP0/CPU0:crs1.LAB(config)#router isis XXX
RP/0/RP0/CPU0:crs1.LAB(config-isis)#interface TenGigE0/1/2/0.250
RP/0/RP0/CPU0:crs1.LAB(config-isis-if)#hello-password text encrypted XXXYYY
RP/0/RP0/CPU0:crs1.LAB(config-isis-if)#commit
% Failed to commit one or more configuration items during an atomic
operation, no changes have been made. Please use 'show configuration failed'
to view the errors

@crs1 - sh int TenGigE0/1/2/0.250
TenGigE0/1/2/0.250 is up, line protocol is up
  Interface state transitions: 3
  Hardware is VLAN sub-interface(s), address is 001e.f73d.79b1
  Internet address is 10.74.66.30/31
  MTU 1530 bytes, BW 10000000 Kbit
     reliability 255/255, txload 0/255, rxload 0/255
  Encapsulation 802.1Q Virtual LAN, VLAN Id 250,  loopback not set,
  ARP type ARPA, ARP timeout 04:00:00
  Last clearing of "show interface" counters never
  5 minute input rate 5000 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     196299 packets input, 110348088 bytes, 0 total input drops
     0 drops for unrecognized upper-level protocol
     Received 2 broadcast packets, 196073 multicast packets
     258 packets output, 16772 bytes, 0 total output drops
     Output 12 broadcast packets, 63 multicast packets


any idea where is the issue ....it was working fine when i established isis
adj with 6500 physical interface...

Regards,