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Thanks for your response. I tried this, however it didn't work, I suspect maybe because I'm using Cisco IOS? Response output: bdr01.mel11#show ip bgp regexp ^(?!.*7474).*1221 % ?+* follows nothing % Invalid regular expression

will-i-am
– will-i-am

2014-10-22 00:46:23 +00:00
Commented Oct 22, 2014 at 0:46
I don't know what regexp engine Cisco uses. lookarounds probably require a modern PCRE engine.

Barmar
– Barmar

2014-10-22 04:43:02 +00:00
Commented Oct 22, 2014 at 4:43
I contacted the Cisco TAC for help. They claim it's not possible. So poor :(

will-i-am
– will-i-am

2014-10-22 06:53:46 +00:00
Commented Oct 22, 2014 at 6:53
Why post a question about Cisco IOS on a Unix group?

Barmar
– Barmar

2014-10-22 13:50:10 +00:00
Commented Oct 22, 2014 at 13:50
Because at that point in time I thought the regex engines were roughly similar... plus a guy at work suggested it might bear some fruit. Thanks for your help anyways.

will-i-am
– will-i-am

2014-10-23 23:16:14 +00:00
Commented Oct 23, 2014 at 23:16

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