Beispiele fuer das Kommando show ip bgp regexp

To find all subnets originating from AS 100 (AS path ends with 100):

        Router# show ip bgp regexp _100$
        ...
           Network          Next Hop            Metric LocPrf Weight Path
        *  10.1.0.0/30      172.16.0.6                             0 300 100 ?
        *>                  172.16.0.1               0             0 100 ?
        *  172.16.0.0/30    172.16.0.6                             0 300 100 ?
        *                   172.16.0.1               0             0 100 ?
        ...

To find all subnets reachable via AS 100 (AS path begins with 100):

        Router# show ip bgp regexp ^100_
        ...
           Network          Next Hop            Metric LocPrf Weight Path
        *> 10.1.0.0/30      172.16.0.1               0             0 100 ?
        *  10.3.0.0/30      172.16.0.1                             0 100 300 ?
        *  172.16.0.0/30    172.16.0.1               0             0 100 ?
        *> 172.16.0.8/30    172.16.0.1               0             0 100 ?
        ...

To find all routes traversing AS 100:

        Router# show ip bgp regexp _100_
        ...
           Network          Next Hop            Metric LocPrf Weight Path
        *  10.1.0.0/30      172.16.0.6                             0 300 100 ?
        *>                  172.16.0.1               0             0 100 ?
        *  10.3.0.0/30      172.16.0.1                             0 100 300 ?
        *  172.16.0.0/30    172.16.0.6                             0 300 100 ?
        ...

If you need to further filter the output, use quote-regexp instead. For example, to find all 172.x.x.x routes originating from AS 100:

        Router# show ip bgp quote-regexp "_100$" | include ^.  172\.
        *  172.16.0.0/30    172.16.0.6                             0 300 100 ?
        *  172.31.0.1/32    172.16.0.6                             0 300 100 ?

Or, to find all subnets currently being reached via AS 100:

        Router# show ip bgp quote-regexp "^100_" | i ^.> 
        *> 10.1.0.0/30      172.16.0.1               0             0 100 ?
        *> 172.16.0.8/30    172.16.0.1               0             0 100 ?
        *> 172.31.0.1/32    172.16.0.1               0             0 100 ?