Configuration Guide Vol. 3


14.3.4 Checking routes received by BGP4 (before learned route filtering) [SL-L3A]

To check routes received by the BGP4 protocol, use the show ip bgp operation command with the received-routes parameter specified.

Figure 14-5: Displaying BGP4 receive routes
> show ip bgp received-routes
Date 20XX/07/14 12:00:00 UTC
BGP Peer: 177.7.7.145    , Remote AS: 1000
Local AS: 200, Local Router ID: 200.201.202.203
Status Codes: d dampened, * valid, > active, S Stale, r RIB failure
Origin Codes: i - IGP, e - EGP, ? - incomplete
   Network              Next Hop        MED    LocalPref Path
*> 200.1/24             192.168.1.145   -      -         1000 i
*  200.200.1/24         192.168.1.145   -      -         1000 i
Notes

The command output does not include routes that are excluded by learned route filtering or do not have priority under BGP4.

To include detailed information about route attributes in the command output, use the show ip bgp operation command with the received-routes and -F parameters specified. Use this method to check the ORIGIN, AS_PATH, MED, LOCAL_PREF, and COMMUNITIES attributes of the routes.

Figure 14-6: Displaying information BGP4 received routes
> show ip bgp received-routes -F
Date 20XX/07/14 12:00:00 UTC
BGP Peer: 192.168.1.145    , Remote AS: 1000
Local AS: 200, Local Router ID: 192.168.1.1
Status Codes: d dampened, * valid, > active, S Stale, r RIB failure
Route 200.1/24
*> Next Hop 192.168.1.145
     MED: -, LocalPref: -, Type: External route
     Origin: IGP
     Path: 1000
     Next Hop Attribute: 192.168.1.145
     Communities: 120:200
Route 200.200.1/24
*  Next Hop 192.168.1.145
     MED: -, LocalPref: -, Type: External route
     Origin: IGP
     Path: 1000
     Next Hop Attribute: 192.168.1.145
     Communities: 120:200
Notes

The command output does not include routes that are excluded by learned route filtering or do not have priority under BGP4.