Layer 3 Routing Commands 1387ExampleIn the following example, the router is configured to reject routes receivedfrom neighbor 172.20.1.1 with an AS path that indicates the route originatesin or passes through AS 100.console(config)# ip as-path access-list 1 deny _100_console(config)# ip as-path access-list 1 deny ^100$console(config)# router bgp 1console(config-router)# neighbor 172.20.1.1 remote-as 200console(config-router)# neighbor 172.20.1.1 filter-list 1 inip bgp-community new-formatTo display BGP standard communities in AA:NN format, use the ip bgp-community new-format command. To display BGP standard communities as32-bit integers, use the no form of this command.Syntaxip bgp-community new-formatno ip bgp-community new-formatDefault ConfigurationStandard communities are displayed in AA:NN format.Command ModeGlobal ConfigurationUser GuidelinesRFC 1997 specifies that the first two bytes of a community number areconsidered to be an autonomous system number. The new format displays acommunity number as the ASN followed by a 16-bit AS-specific number.Exampleconsole(config)#ip bgp-community new-format
