04-21-2015 11:35 PM - edited 03-05-2019 01:18 AM
what is the use of "Standby (Group id) Track "command. we totally confused to know the exact reason y we are using this command in HSRP protocol
Please suggest the main reason
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04-22-2015 12:29 AM
Hello m_ashok89,
An example is using 2 routers with one acting as a failover router to access the internet.
HSRP is configured on the inside interfaces of the routers.
The tracking is used to track the outside interfaces, which are non hsrp interfaces.
If the outside interface/line protocol goes down on the main router, the HSRP priority is decreased for that router, which results in the failover router having the higher priority and takes over as the active router.
Even though the HSRP interfaces haven't failed, the network has avoided a network outage.
Hope this helps,
Please rate helpful posts.
Thanks.
04-22-2015 12:29 AM
Hello m_ashok89,
An example is using 2 routers with one acting as a failover router to access the internet.
HSRP is configured on the inside interfaces of the routers.
The tracking is used to track the outside interfaces, which are non hsrp interfaces.
If the outside interface/line protocol goes down on the main router, the HSRP priority is decreased for that router, which results in the failover router having the higher priority and takes over as the active router.
Even though the HSRP interfaces haven't failed, the network has avoided a network outage.
Hope this helps,
Please rate helpful posts.
Thanks.
04-22-2015 01:18 AM
Thanku sir
04-22-2015 01:37 AM
Your welcome.
Please rate helpful posts. :)
04-22-2015 05:24 AM
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It allows you to "move" the active gateway when the tracked interface goes down.
It's most commonly used to track the backside interface. What it does, it make routing a bit more efficient. For example, the router with the active/how gateway loses it backside (e.g. WAN) interface. So, as it no longer has a direct route out, it needs to direct traffic to a peer router, often one with a standby HSRP. This works, but it causes traffic to take an extra hop. More efficient would be have the standby gateway become the active gateway. That's what the tracking option allows. I.e. when active gateway's backside interface fails, it can "demote" its HSRP priority, allowing another HSRP router to become the active gateway.
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