Connectivity Guide

• suppress — Number compares to the apping route’s penalty value. If the penalty value is greater than the suppress value, the
apping route no longer advertises and is suppressed (1 to 20000, default 2000).
• max-suppress-time — Maximum number of minutes a route is suppressed (1 to 255, default is four times the half-life value
or 60 minutes).
2 View all ap statistics or for specic routes meeting the criteria in EXEC mode.
show ip bgp flap-statistics [ip-address [mask]]
• ip-address [mask]— Enter the IP address and mask.
• filter-list as-path-name — Enter the name of an AS-PATH ACL.
• regexp regular-expression — Enter a regular express to match on.
When you change the best path selection method, path selections for the existing paths remain unchanged until you reset it by using the
clear ip bgp command in EXEC mode.
Congure values to reuse or restart route
OS10(config)# router bgp 102
OS10(conf-router-bgp-102)# address-family ipv4 unicast
OS10(conf-router-bgpv4-af)# dampening 2 2000 3000 10
View dampened (nonactive) routes
OS10# show ip bgp flap-statistics
BGP local router ID is 13.176.123.28
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Origin codes: i - IGP, e - EGP, ? - incomplete
Network
From Reuse Path
Total number of prefixes: 0
View dampened paths
OS10# show ip bgp dampened-paths
BGP local router ID is 80.1.1.1
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Reuse Path
d* 3.1.2.0/24 80.1.1.2 00:00:12 800 9 8 i
d* 3.1.3.0/24 80.1.1.2 00:00:12 800 9 8 i
d* 3.1.4.0/24 80.1.1.2 00:00:12 800 9 8 i
d* 3.1.5.0/24 80.1.1.2 00:00:12 800 9 8 i
d* 3.1.6.0/24 80.1.1.2 00:00:12 800 9 8 i
Total number of prefixes: 5
Timers
To adjust the routing timers for all neighbors, congure the timer values using the timers command. If both the peers negotiate with
dierent keepalive and hold time values, the nal hold time value is the lowest values received. The new keepalive value is one-third of the
accepted hold time value.
• Congure timer values for all neighbors in ROUTER-NEIGHBOR mode.
timers keepalive holdtime
– keepalive — Time interval in seconds, between keepalive messages sent to the neighbor routers (1 to 65535, default 60).
– holdtime — Time interval in seconds, between the last keepalive message and declaring the router dead (3 to 65535, default
180).
View nondefault values
OS10# show running-configuration
...
458
Layer 3