HSRP configuration

[narciso.lazo]

Hello,

I have 2 seperate 4507R Switch running Sup VI-E, with the latest IOS on both of them. How do you configure HSRP on these 2 switches, to make the first switch ACTIVE and the other switch STANDBY. Can you please post a sample configuration for this scenario? Thank you.

-- Chie

[Antonio Knox · Accepted solution]

You want to make the priority higher on the switch that you want as active.  Let's use an example vlan 10 (10.1.1.0/24):

Switch-1 (ACTIVE)

int vlan 10

ip address 10.1.1.2 255.255.255.0

!-----SET UP HSRP VIP-------

standby 10 ip 10.1.1.1

!-----SET UP HSRP PRIORITY, DEFAULT IS 100 SO WE'LL GIVE ACTIVE 105-------

standby 10 priority 105

!-----IF HE GOES DOWN, WE WANT HIM TO TAKE OVER WHEN HE COMES BACK UP (PREEMPT)-----

standby 10 preempt

Switch-2 (STANDBY)

int vlan 10

ip address 10.1.1.3 255.255.255.0

!-----SET UP HSRP VIP-------

standby 10 ip 10.1.1.1

!-----THIS IS STANDBY, WE'LL LEAVE HSRP PRIORITY ALONE, DEFAULT IS 100 (NO CONFIG NECESSARY)-------

!-----IF ACTIVE GOES DOWN, WE WANT STANDBY TO TAKE OVER-----

standby 10 preempt

Please rate if helpful.

[Ven Taylor · Accepted solution]

R1:

Interface vlan10

description primary vlan10 interface

ip address 10.100.10.2 255.255.255.0  <-- real ip

standby 10 ip 10.100.10.1  <-- default gateway provided to end-nodes

standby priority 105

standby preempt

no shut

!

( you can also use the "standby 10 track " command on R1.  It will track the router's default gateway.  If that interface goes down, the router will automatically lower it's priority, causing R2 to become active - example cli is "standby 10 track serial0" )

R2:

Interface vlan10

description secondary vlan10 interface

ip address 10.100.10.3 255.255.255.0  <-- real ip

standby 10 ip 10.100.10.1  <-- default gateway provided to end-nodes

standby priority 100

standby preempt

no shut

!

Once these configurations are made, do a " show ip interface brief " on both routers.  From here, you can check to see if each router is properly active/standby and what IP address they're both providing as the default gateway.

This also works for physical interfaces, but I hope you're using SVIs and trunking to L2 switches too.

Ven