From: Sadiq Yakasai (sadiqtanko@gmail.com)
Date: Fri Apr 04 2008 - 18:58:20 ART
Hi Mo,
Just to add a little more flesh to what Ram has said: So you configure
HSRP. You make one the Active with the higher priority. If you are not
tracking any interface, you dont really need to configure pre-emption,
because the router with the higher priority will always be the Active.
If this router goes down, the Standby takes over.
If for any reason, the router with the higher priority comes back
online, without any preemption enabled, it would'nt become the Active
router. It now becomes your Standby.
When you configure tracking, then you need preemtion, for the Standby
router to take over the role of Active when the interface you are
tracking on the Active router fails, which keep decrementing the
priority, until a point is reached when the Standby's priority is
higher than the Active's, in which case a coup de'tat takes place.
Anyways, let me allow you be now :)
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