Chapter 50
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1127 –
show ip bgp filter-list This command shows routes matching the specified filter list.
Syntax
show ip bgp filter-list access-list-name
access-list-name – Name of a list of autonomous system paths as defined by
the ip as-path access-list command. (Maximum length: 16 characters, no
spaces or other special characters)
Command Mode
Privileged Exec
Example
Console#show ip bgp filter-list rd
BGP table version is 0, local router ID is 192.168.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 100.1.1.0/24 10.1.1.64 0 0 100 ?
Total number of prefixes 1
Console#
show ip bgp
neighbors
This command chows connection information for neighbor sessions.
Syntax
show ip bgp neighbors [ip-address [advertised-routes |
received prefix-filter | received-routes | routes]]
ip-address – IP address of the neighbor.
advertised-routes – Shows the routes advertised to a neighbor.
received prefix-filter – Shows the prefix-list (outbound route filter) sent
from a neighbor.
Table 26: show ip bgp dampening parameters- display description
Field Description
Reachability half-
life time
The time after which a penalty is reduced. The penalty value is reduced to half of
the previous value after the half-life time expires.
Reuse penalty The point to which the penalty for a flapping route must fall before a route is
unsuppressed.
Suppress penalty The point at which to start suppressing a route.
Max suppress
time
The maximum time a route can be suppressed.
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