07-25-2009 08:33 AM - edited 03-04-2019 05:32 AM
Hi,
I would like to know what is the difference of using HSRP standby command in the following way
(config-if)# standby 1 name CCIE
and
(config-if)# standby name CCIE
What is the significance of using the number next to standby.
sairam
Solved! Go to Solution.
07-25-2009 08:37 AM
numbered standby groups allows you to create several standby groups on the same interface. If you have secondary subnets on the interface, multiple standby groups would be required.
You could also create two standby groups on an interface with two different VIP addresses. Make one VIP active on one router, and another VIP active on another router. Configure half your clients to use one VIP as default gateway and the other half use the other VIP as default gateway. You are now load balancing outbound traffic.
Regards,
Roman
07-25-2009 08:37 AM
numbered standby groups allows you to create several standby groups on the same interface. If you have secondary subnets on the interface, multiple standby groups would be required.
You could also create two standby groups on an interface with two different VIP addresses. Make one VIP active on one router, and another VIP active on another router. Configure half your clients to use one VIP as default gateway and the other half use the other VIP as default gateway. You are now load balancing outbound traffic.
Regards,
Roman
07-25-2009 08:44 AM
Hi Roman,
Thanks and nice reply. No I am not planning to do Load Balancing.
Also please tell whether I am correct in the following way
If i use
(config-if)# standby name ROMAN
does it mean that if is for one instance only. what is the advantage of using over numbered standby command
When this type is typically used.
SAIRAM
07-25-2009 08:52 AM
as far as i know, there aren't any advantages of using non-numbered standby groups. If you only need one standby group, then just use non-numbered one. But you can have a non-numbered group and a bunch of numbered groups on the same interface if you wanted.
07-25-2009 01:29 PM
Hi Roman,
Actually, there are no "unnumbered" standby groups in HSRP. Each standby group has to have a number because its virtual MAC is derived from it. If you do not enter any group number in the "standby ip" command, the router will automatically use the group number 0. In other words, not specifying the group number is identical to writing "standby 0 ip A.B.C.D".
You may want to check this link for additional details:
http://www.cisco.com/en/US/docs/ios/ha/command/reference/ha_s3.html#wp1044135
Best regards,
Peter
07-25-2009 01:31 PM
thank you for clarifying that! :) +5
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