when I configurate the is-is,it show the error msg below:
one port is:%CLNS-3-BADPACKET: ISIS: LAN L2 hello, bad circuit type 0 from ca03.0b20.001c (FastEthernet1/1)
and the other port is:%CLNS-3-BADPACKET: ISIS: L2 CSNP, packet length 0 less than header length 33 from ca04.0b20.001d (FastEthernet1/0)
can anyone help me,and are there have doc to reference?
it looks like one of the two routers is not running IS-IS correctly.
May you post the platform models and the IOS images you are using?
And eventually the parts of your configuration involved: interface config is-is process config of both nodes
Hope to help