09-12-2019 05:27 AM
What is difference between hold timer, active timer and standby timer? They're all purposes same
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09-13-2019 05:01 AM
Hello
If preempt is enabled then no it shouldn't has if/when a peer comes up which has a preferred higher priority then it will take the active role irrelevant of how long the initial active peer has been up
09-12-2019 05:31 AM
Hi there,
This document explains their purpose:
https://www.cisco.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/10583-62.html#topic14
cheers,
Seb.
09-12-2019 08:36 AM - edited 09-12-2019 09:15 AM
Hello
standby xx timers x( hello 5) x (hold timer)
Hello timer - is the time value that the router will send a hello to its neighbor to see if its active
Hold timer - is the time value the rtr will wait if no response to that hello is received
Active/Standby rtr timer is based on both the hello and hold timers, meaning if the rtr it doesn't receive a hello its active/standby timer will be the hold time value however it should not get down to that as it should refresh every received hello.
example:
standby x timers 5 15
Active-Standby/Hold timer = 15 seconds
Hello is 5 seconds = So every 5 seconds a hello will be send so the active/standby timer should not go below 10 seconds until its refreshed however if it doesn't receive a response from a hello it will count down from 15 seconds to 0 before stating the active peers is not reachable.
09-13-2019 04:43 AM
Does the uptime of the router matters while electing the active router?
09-13-2019 05:01 AM
Hello
If preempt is enabled then no it shouldn't has if/when a peer comes up which has a preferred higher priority then it will take the active role irrelevant of how long the initial active peer has been up
09-13-2019 07:14 AM
How many standby routers an HSRP standby group can have?
09-13-2019 08:12 AM
Hello
Hum not so sure tbh the priority value ranges from 0 255 so it could be quite extensive however the probability of multiple rtrs failing in you hrsp environment at the same time is I would say very low so you wouldn’t require that many I guess.
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