hsrp issue...

[mohsin.khan]

hi,

i have 2 4506 switches, running as Primary and Secondary core. I have a hsrp configured for different interfaces... On primary switch,

Interface Grp Prio P State Active addr Standby addr Group addr

Vl91 0 200 P Standby 10.3.109.249 local 10.3.18.1

where, 10.3.109.249 is also the interface IP of the same primary switch. I have same hsrp group number configured for all interfaces.. Please help me understand the problem and solution.

[lamav]

Moshin:

We cant give you a solution unless you tell us what the problem is.

Why dont you copy and paste from the routers' configs so we can see exactly whats going on?

[amolwaghmare]

What is problem?

[mohsin.khan]

Primary

Interface Grp Prio P State Active addr Standby addr Group addr

Vl4 0 200 P Active local 10.3.11.250 10.3.11.1

Vl5 0 200 P Active local 10.3.12.250 10.3.12.1

Vl6 0 200 P Active local 10.3.13.250 10.3.13.1

Vl91 0 200 P Standby 10.3.109.249 local 10.3.18.1

Secondary

Interface Grp Prio P State Active addr Standby addr Group addr

Vl4 0 100 Standby 10.3.11.249 local 10.3.11.1

Vl5 0 100 Standby 10.3.12.249 local 10.3.12.1

Vl6 0 100 Standby 10.3.13.249 local 10.3.13.1

Vl91 0 100 Init unknown unknown 10.3.18.1

Configuration:

Primary

interface Vlan4

ip address 10.3.11.249 255.255.255.0

no ip redirects

standby ip 10.3.11.1

standby priority 200

standby preempt

!

interface Vlan5

ip address 10.3.12.249 255.255.255.0

no ip redirects

standby ip 10.3.12.1

standby priority 200

standby preempt

!

interface Vlan6

ip address 10.3.13.249 255.255.255.0

no ip redirects

standby ip 10.3.13.1

standby priority 200

standby preempt

interface Vlan91

ip address 10.3.18.249 255.255.255.0

no ip redirects

standby ip 10.3.18.1

standby priority 200

standby preempt

Secondary

interface Vlan4

ip address 10.3.11.250 255.255.255.0

no ip redirects

standby ip 10.3.11.1

!

interface Vlan5

ip address 10.3.12.250 255.255.255.0

no ip redirects

standby ip 10.3.12.1

!

interface Vlan6

ip address 10.3.13.250 255.255.255.0

no ip redirects

standby ip 10.3.13.1

interface Vlan91

ip address 10.3.18.250 255.255.255.0

no ip redirects

standby ip 10.3.18.1

====================================

If you look at vlan 91, you can see there is no difference in the configuration with the other vlan configs. BUT

1. I am getting syslog msgs (mnemonic=DIFFVIP1)Desc=Vlan91 Group 0 active routers virtual almost 1000 times a day..

2. Due to the fact that vlan91 is not functional, ports on secondary core which are in vlan 91 do not respond. There was a machine (for vlan 91) which was showing ping responce in a odd fasihion . like this.

1. reply from destination

2. Time out

3. reply from destination

4. time out

5. reply from destination

6. time out (and so on).

As soon as we SHUT down the Vlan91 on secondary switch, the ping response got smooth.. That means, vlan 91 (due to its init state in secondary switch) is problematic.

M question is, what is wrong in the configuration? if there is nothing wrong, then what else could be the problem?

[sander.hendriks]

Moshin,

It looks like vlan91 interface on both switches can't communicate with each other eg. there is no L2 link.

Do you have a trunk between the primary and secondary switch? Ifso check if vlan 91 is added on both sided of the trunk.

Sander