R0106-HP MSR Router Series Layer 3 - IP Routing Command Reference(V7)

323
Parameters
ipv4: Displays BGP IPv4 route flap statistics.
ipv6: Displays BGP IPv6 route flap statistics.
multicast: Displays BGP multicast route flap statistics.
unicast: Displays BGP unicast route flap statistics.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string
of 1 to 31 characters. If no VPN instance is specified, the command displays BGP route flap statistics for
the public network.
network-address: Specifies a destination network address.
mask: Specifies a network mask, in dotted decimal notation.
mask-length: Specifies a mask length in the range of 0 to 32.
longest-match: Specifies longest match mode, which selects the longest matching route through the
following steps:
1. ANDs the specified network address with the mask of each route.
2. Matches a route if the AND result is the same as the network address of the route and the mask of
the route is shorter than or equal to the specified mask.
3. Selects the route with the longest mask among the matching routes.
network-address prefix-length: Displays route flap statistics for BGP IPv6 routes that match the specified
network address, and match the prefix length in the range of 0 to 128.
as-path-acl as-path-acl-number: Displays route flap statistics for BGP routes that match the AS path list
specified by its number in the range of 1 to 256.
Usage guidelines
When you execute the display bgp routing-table flap-info ipv4 unicast command:
• If only the network-address argument is specified, the system ANDs the network address with the
mask of a route. If the result matches the network address of the route, the command displays flap
statistics of the route.
• If the network-address mask or network-address mask-length argument is specified, and the
longest-match keyword is not specified, the command displays flap statistics of the BGP IPv4
unicast or multicast route that matches both the specified destination network address and the mask
(or mask length).
By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is
specified.
Examples
# Display BGP IPv4 unicast route flap statistics for the public network.
<Sysname> display bgp routing-table flap-info ipv4
Total number of routes: 1
BGP local router ID is 192.168.1.135
Status codes: * - valid, > - best, d - dampened, h - history,
s - suppressed, S - stale, i - internal, e - external
Origin: i - IGP, e - EGP, ? - incomplete