10-28-2003 01:33 AM - edited 03-02-2019 11:18 AM
Hi All
What are the disadvantages of using one HSRP group number on multiple VLANs?
Example (from Cisco):
VLAN 1 - VLAN 8: HSRP Group Interface #1
VLAN 9 - VLAN 16: HSRP Group Interface #2
VLAN 17 - VLAN 24: HSRP Group Interface #3
etc...
I know that VLANs 1 - 8 will have the same MAC address, but that shouldn't be an issue on a pure Cisco network, right?
10-28-2003 02:18 PM
Hi,
1.I believe it is not possible to configure like this.(as every VLAN will be in different L3 IP subnet), Virtual IP (standby IP) will vary for each VLAN.For one HSRP group we can have one standby IP only.
2.Where as we can have multiple HSRP groups configured on one VLAN interface, with multiple L3 subnets for load balance purpose.
regards
10-28-2003 06:54 PM
I'm under the impression that you can use the same HSRP group on different interfaces and use a different virtual IP for each. These virtual IP's will use the same MAC address, but this generally isn't an issue.
10-29-2003 01:20 AM
Your config will look something like this:
interface VLAN 1
ip address 1.1.1.253 255.255.255.0
standby 1 ip 1.1.1.254
standby 1 priority 130
interface VLAN 2
ip address 1.1.2.253 255.255.255.0
standby 1 ip 1.1.2.254
standby 1 priority 130
.
.
.
.
interface VLAN 8
ip address 1.1.8.253 255.255.255.0
standby 1 ip 1.1.8.254
standby 1 priority 130
interface VLAN 9
ip address 1.1.9.253 255.255.255.0
standby 2 ip 1.1.9.254
standby 2 priority 130
interface VLAN 10
ip address 1.1.10.253 255.255.255.0
standby 2 ip 1.1.10.254
standby 2 priority 130
.
.
.
interface VLAN 16
ip address 1.1.16.253 255.255.255.0
standby 2 ip 1.1.16.254
standby 2 priority 130
interface VLAN 17
ip address 1.1.17.253 255.255.255.0
standby 3 ip 1.1.17.254
standby 3 priority 130
.
.
.
etc...
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide