From: Privat\ ("Erling)
Date: Sat Nov 09 2002 - 17:00:13 GMT-3
The * means any occurence of the char including none.
The + means at least one occurence of the char should be present.
This means that [0-9]* also cover routes orginated from this AS.
See following printout:
rA#sh ip bgp
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.1.0/24 10.0.0.2 0 0 2 i
*> 172.16.2.0/24 10.0.0.2 0 0 2 100 i
*> 172.16.3.0/24 10.0.0.2 0 0 2 200 100 i
*> 172.16.4.0/24 10.0.0.2 0 0 2 300 200 100 i
*> 192.168.1.0 0.0.0.0 0 32768 i
rA#sh ip bgp regexp .*
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.1.0/24 10.0.0.2 0 0 2 i
*> 172.16.2.0/24 10.0.0.2 0 0 2 100 i
*> 172.16.3.0/24 10.0.0.2 0 0 2 200 100 i
*> 172.16.4.0/24 10.0.0.2 0 0 2 300 200 100 i
*> 192.168.1.0 0.0.0.0 0 32768 i
rA#sh ip bgp regexp ^[0-9]*$
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.1.0/24 10.0.0.2 0 0 2 i
*> 192.168.1.0 0.0.0.0 0 32768 i
rA#sh ip bgp regexp ^[0-9]+$
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.1.0/24 10.0.0.2 0 0 2 i
rA#sh ip bgp regexp ^$
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 192.168.1.0 0.0.0.0 0 32768 i
rA#sh ip bgp regexp [0-9]*
BGP table version is 6, local router ID is 172.16.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.1.0/24 10.0.0.2 0 0 2 i
*> 172.16.2.0/24 10.0.0.2 0 0 2 100 i
*> 172.16.3.0/24 10.0.0.2 0 0 2 200 100 i
*> 172.16.4.0/24 10.0.0.2 0 0 2 300 200 100 i
*> 192.168.1.0 0.0.0.0 0 32768 i
rA#
Regards
Erling Bjontegard
----- Original Message -----
From: "syv" <syv@911networks.com>
To: "Franck ccie" <cciefrank@hotmail.com>
Cc: <ccielab@groupstudy.com>
Sent: Saturday, November 09, 2002 6:09 PM
Subject: Re: Regular expression for BGP
> On Saturday, November 09, 2002, Franck ccie wrote:
>
> -----Original Message-----
> Fc> I'm looking for a good site giving a good explanation of
> Fc> regular expression for BGP ..
>
> [0-9]* Matches any single AS number. This is the wild card for an AS
> _.* Matches everything [permit any/all]
> _100_ Any route going through AS100
> _100 200_ Passed through 100 and 200 in that order
> _100$ Any route originated in AS100
> ^100$ Only routes originated in AS100 that did not pass through any other AS
> ^100_ Only routes received from AS100, anything else behind
> ^100 .* Only routes received from AS100, anything else behind [alternative]
> ^$ Originated from this AS
> ( .*) matches a space plus a AS.
> ( .*)* matches a space plus a AS or a null string.
> ? To type ?: either Ctrl-V or Esq-Q
>
>
> --
> Thanks
> syv@911networks.com
This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:55 GMT-3