icmp redirects best practice
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04-23-2014 09:08 AM - edited 03-07-2019 07:11 PM
Is there a best practice for enabling or disabling icmp redirects? Looks like I have redirects enabled and that caused a problem for a host server the other night. A line went down, the 6500 sent a redirect that was not really a valid route and when the line came up, the host still cached the redirected route, causing a problem. Are there any pro's and con's, although I'm leaning towards disabling redirects?
as always, thanks for your ideas.
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04-23-2014 10:38 AM
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Redirects are about efficiency; avoiding the need to transit an extra device. If that's not a concern, turn if off.
(Of course there's the issue why the 6500 sent an invalid route redirect.)
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04-23-2014 10:59 AM
thanks, the invalid route was actually a default route that sent traffic to our firewall and that was never going to work. thanks again.
