HSRP with trunk ISL encap- ISSUES?

From: Sharma, Mohit (mohit.sharma@hp.com)
Date: Sat Jun 19 2004 - 09:03:33 GMT-3


HI All,

Has anyone seen this before?

I have R2 and R6 connected with each other via a 3550.

        Rack1R2 -----3550------------------Rack1R6(fa3/1/0.26)
                                            |
                                         ISL trunk

If I enable HSRP on R2 and R6 all connection is lost between them.

If I then change the trunk encap to dot1q on R6 and the 3550, all works
fine.

Does anybody know why this is??

Rack1R6#
interface FastEthernet3/1/0.6
 encapsulation isl 6
 ip address 130.1.26.6 255.255.255.0
 no ip redirects
End
Rack1R6(config)#int fastEthernet 3/1/0.26
Rack1R6(config-subif)# standby ip 130.1.26.254
Rack1R6(config-subif)#
*Jun 19 12:07:24.275: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
130.1.26.2 (FastEthernet3/1/0.26) is down: retry limit exceeded
Rack1R6(config-subif)#
*Jun 19 12:07:24.275: destroy peer: 130.1.26.2
Rack1R6(config-subif)#do ping 130.1.26.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 130.1.26.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
-----------------------------------
With dot1q
interface FastEthernet3/1/0.26
 encapsulation dot1Q 26
 ip address 130.1.26.6 255.255.255.0
 no ip redirects
 standby ip 130.1.26.254
 standby priority 110
 standby preempt delay minimum 10
End
Rack1R6(config-subif)#do ping 130.1.26.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 130.1.26.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 4/4/4 ms
Rack1R6(config-subif)#do sh ru int
*Jun 19 12:11:02.591: %BGP-5-ADJCHANGE: neighbor 130.1.26.2 Up

Thanx,
Mohit.



This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:44 GMT-3