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Catalyst 3550 & HSRP v2

Hi,

I am testing on lab equipment (2 Catalyst 3550 and 1 Catalyst 3560) HSRP version 1 and 2.

I successfully created a load balancing between the two Catalyst 3550 on a couple of vlans (11 and 12) on ver 1

now, just adding the command "standby xx version 2" my hosts on the 2 vlans are completely unable to ping the virtual IP def. gw

on debugging i checked that

  • hello msgs are exchanged
  • the two cat 3550 are seeing each other on HSRP (active / standby roles)
  • the real ip addresses are pingable
  • rebooted the swiches (just as a last resort try)
  • deleted arp chache on hosts
  • removed the auth on hsrp

all of this no effect...

i also tried to modify the priority on the cat 3560 (before he was on both vlans in standby) to make it the active one and with the same config it worked flawlessly...

My only idea is that there is a bug on CATs 3550 (IOS: c3550-ipservicesk9-mz.122-55.SE4.bin)

configs:

SW-3550-A

interface Vlan11

ip address 12.0.0.2 255.255.255.0

standby version 2

standby 11 ip 12.0.0.1

standby 11 priority 150

standby 11 preempt

standby 11 authentication md5 key-string LAB

SW-3550-B

interface Vlan11
ip address 12.0.0.3 255.255.255.0
standby version 2
standby 11 ip 12.0.0.1
standby 11 preempt
standby 11 authentication md5 key-string LAB

SW-3550-A#sh standby

Vlan11 - Group 11 (version 2)

State is Active

16 state changes, last state change 00:18:08

Virtual IP address is 12.0.0.1

Active virtual MAC address is 0000.0c9f.f00b

Local virtual MAC address is 0000.0c9f.f00b (v2 default)

Hello time 3 sec, hold time 10 sec

Next hello sent in 2.560 secs

Authentication MD5, key-string

Preemption enabled

Active router is local

Standby router is 12.0.0.3, priority 100 (expires in 8.976 sec)

Priority 150 (configured 150)

Group name is "hsrp-Vl11-11" (default)

SW-3550-B#sh standby

Vlan11 - Group 11 (version 2)

State is Standby

10 state changes, last state change 00:17:18

Virtual IP address is 12.0.0.1

Active virtual MAC address is 0000.0c9f.f00b

Local virtual MAC address is 0000.0c9f.f00b (v2 default)

Hello time 3 sec, hold time 10 sec

Next hello sent in 2.208 secs

Authentication MD5, key-string

Preemption enabled

Active router is 12.0.0.2, priority 150 (expires in 9.616 sec)

MAC address is 000a.8a28.ea80

Standby router is local

Priority 100 (default 100)

Group name is "hsrp-Vl11-11" (default)

Any suggestion is appreciatedd and...thank you all in advance!