Q:
HSRP in cisco
I have L3 core switches, I want to configure HSRP for vlan 30, Please verify my configuration. My active router should be core 3 switch.
Core swith 1
interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.252 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 110 standby 30 preempt
_____________ core sWitch 2
interface Vlan30 ip address 192.168.21.251 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 100 standby 30 preempt
______________________Core Switch 3
interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.254 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 120 standby 30 preempt
Core swith 1
interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.252 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 110 standby 30 preempt
_____________ core sWitch 2
interface Vlan30 ip address 192.168.21.251 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 100 standby 30 preempt
______________________Core Switch 3
interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.254 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 120 standby 30 preempt
ASKED:
Aug 26 2009 4:24 AM GMT
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A:
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One thing you should consider, is adding a password key, so that only these three devices participate in the HSRP process. It just saves problems later if someone else configures HSRP on other devices in this VLAN.
Another thing you may want to look at is tracking which will change the priority based on some criteria, and is used to then change which device is the active router for HSRP. You can track interfaces, so if the backhaul interface fails, then it lowers the priority, or track routes in the table, if this is important. It depends on your network, and why you need this level of redundancy.
