Can you help with simple PBR?

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Nov 5th, 2008
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Imagine on SWITCH-4500, I want to send traffic from network to next hop Then I want to ping 'next hop' to make sure it is not down so that I can make PBR stop sending traffic if is down. How can I accomplish that? So far I have done the first step:


set ip next-hop

match ip address 101

access-list 100 permit

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news2010a Wed, 11/05/2008 - 17:55
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Perhaps tracking is the way to go...

15. set ip next-hop verify-availability [next-hop-address sequence track object]

Jon Marshall Thu, 11/06/2008 - 00:34
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Yes you can do this. Note that if you just use verify-availability then the router uses CDP to verify that the next-hop is up which may or may not be what you want. If you don't want that then you can use tracking with this command as well.


vishwancc Wed, 11/05/2008 - 22:18
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I think you could use ip sla to track the next hop.



tcordier Thu, 11/06/2008 - 00:42
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As an additional remark to the previous posts: you can also add a backup next-hop in your route-map which will be used in case your primary next-hop is down:

set ip next-hop

where is your backup next hop.

HTH, Thomas


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