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    Monitoring Advertised BGP Routes

    Purpose

    Display the routes in the specified neighbor’s or peer group’s Adj-RIBs-Out table for IPv4 or IPv6.

    For peers, display the attributes associated with the route before the application of any outbound policy. For peer groups, display the attributes associated with the route after the application of any outbound policy; that is, the actual advertised attributes. Report whether the indirect next hop of a route is unreachable; if not, display the IGP cost to the indirect next hop.

    The show ip bgp advertised-routes and show bgp ipv6 advertised-routes commands displays similar information.

    Note: You must first enable storage of routes to the Adj-RIBs-Out tables with the no rib-out disable command or the no neighbor rib-out disable command. Otherwise, this command returns an error message.

    Action

    To display routes in the specified neighbor’s or peer group’s Adj-RIBs-Out table for IPv4:

    host1#show ip bgp neighbors 5.72.116.1 advertised-routes
    
    Local BGP identifier 2.2.2.2, local AS 2222
      0 routes (0 bytes used), 0 distinct destinations (0 bytes used)
      0 routes selected for route table installation
      0 path attribute entries (0 bytes used)
    
    Status codes: > best, * invalid, s suppressed, d dampened, r rejected
    
      Prefix             Peer            Next-hop     MED LocPrf Weight Origin
    > 0.0.0.0/0         5.72.116.1     5.72.1.1               0       IGP
    > 10.10.0.87/32     5.72.116.1     5.72.1.1               0       inc.
    > 13.13.13.13/32    5.72.116.1     5.72.1.1               0       IGP
    > 33.0.0.0/16       0.0.0.0        5.72.1.1         1     32768   inc.
    > 33.0.0.0/24       0.0.0.0        5.72.1.1         1     32768   inc.
    > 44.44.0.0/16      5.72.116.1     5.72.1.1               0       inc.

    Meaning

    Table 1 lists the show ip bgp advertised-routes command output fields.

    Table 1: show ip bgp advertised-routes Output Fields

    Field Name

    Field Description

    Local BGP identifier

    BGP router ID of the local router

    local AS

    Local autonomous system number

    routes

    Total number of routes stored in the BGP routing table and amount of memory consumed by routes. If several peers have advertised a route to the same prefix, all routes are included in this count.

    distinct destinations

    Number of routes to unique prefixes stored in the BGP routing table. If several peers have advertised a route to the same prefix, only the best route is included in this count.

    routes selected for route table installation

    Number of routes in the BGP routing table that have been inserted into the IP routing table

    path attribute entries

    Number of distinct path attributes stored in BGP's internal path attributes table. If BGP receives two routes for different prefixes but with identical path attributes, BGP will create only one entry in its internal path attribute table and share it between the two routes to conserve memory.

    Prefix

    Prefix for the routing table entry

    Peer

    IP address of BGP peer

    Next hop IP address

    IP address of the next hop

    MED

    Multiexit discriminator for the route

    LocPrf

    Local preference for the route

    Weight

    Assigned path weight

    Origin

    Origin of the route

    Published: 2014-08-18