HSRP question

[Leonardo Pena Davila]

Hi, I want to configure two MSFC`s in the same chasis. By example I have in the first MSFC

Interface Vlan 56

ip address 156.175.20.1 255.255.255.0

ip helper-address 156.175.28.202

If I want to configure the second MSFC for HSRP do I have to change the ip addresse of my Interface Vlan 56.

For those devices that have default gateway 156.175.20.1 do I have to add a new default gateway.

Thanks a lot

Regard

LP

[amikat]

Hi,

The answer very much depends on what you wish to achieve. From HSRP point of view at vlan 56 the address that matters is the virtual address you assign by "standby ip" command. Ie should you prefer to keep your default gateway address unchanged you assign it as standby (and assign new addresses to vlan56 in both MSFCs), should you like to keep of interface vlan56 address unchanged at MSFC1 you should assign different address as stansby and then change default gateway. The first example may look like this:

MSFC1:

interface vlan 56

ip add 156.175.20.2 255.255.255.0

standby 1 ip 156.175.20.1

standby 1 priority 10

standby 1 preempt

standby 1 timers 5 15

standby 1 authentication cisco,

MSFC2:

interface vlan 56

ip add 156.175.20.3 255.255.255.0

standby 1 ip 156.175.20.1

standby 1 priority 20

standby 1 preempt

standby 1 timers 5 15

standby 1 authentication cisco.

For the case you would like to keep the ip address of vlan56 unchanged you just change the 156.175.20.1 for 156.175.20.2 and vice versa.

Best regards,

Antonin