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PIX Route lookup failed

My ASA continues to report route lookup issues for a number of networks on the outside interface, but if I attempt to ping these address, I can get to them, has anyone seen this?

8 REPLIES
Gold

Re: PIX Route lookup failed

those sorts of errors shouldn't be taken so literally. the pix/asa will give route lookup errors for other non-route-related issues, such as NAT misconfigurations.

Re: PIX Route lookup failed

Do you have a default route pointing towards the outside? Also what is the number of the syslog message?

This syslog does not always mean a route lookup failure, it can be fired for other reasons also.

Regards

Farrukh

Community Member

Re: PIX Route lookup failed

Thanks guys for responding so quickly.

We do have a default route on the ASA. We receive this alert (from our mars box) atleast one an hour.

How can I go about troubleshooting this issue, what can I look for if it is NAT related?

Ideas?

Green

Re: PIX Route lookup failed

Is the address it is reporting typically the source address of a remote access vpn user?

Community Member

Re: PIX Route lookup failed

Yes they are. What does that mean?

Green

Re: PIX Route lookup failed

Don't know, haha...I know it happens to me as well. Don't think it's anything to be concerned about.

Community Member

Re: PIX Route lookup failed

LOL really?

Green

Re: PIX Route lookup failed

Yes, I created a drop rule on my Mars because I was tired of seeing them and they are obviously not causing any issues with vpn clients.

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