Reference Guide

Version 7.7.1.0 Introduced on the C-Series.
Usage
Information
The following describes the show ip bgp damp command shown in the following
example.
Field Description
Network Displays the network ID to which the route is dampened.
From Displays the IP address of the neighbor advertising the dampened
route.
Reuse Displays the hour:minutes:seconds until the dampened route is
available.
Path Lists all the ASs the dampened route passed through to reach the
destination network.
Example
FTOS>show ip bgp dampened-paths
BGP table version is 210708, local router ID is 63.114.8.2
Status codes: s suppressed, d damped, h history, * valid, >
best
Path source: I - internal, a - aggregate, c - confed-external,
r - redistributed, n - network
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Reuse Path
FTOS>
BGP Extended Communities (RFC 4360)
BGP Extended Communities, as defined in RFC 4360, is an optional transitive BGP attribute.
BGP Extended Communities provides two major advantages over Standard Communities:
• The range is extended from 4-octet (AA:NN) to 8-octet (Type:Value) to provide enough number communities.
• Communities are structured using a new “Type” field (1 or 2-octets), allowing you to provide granular control/
filter routing information based on the type of extended communities.
set extcommunity rt
To set Route Origin community attributes in Route Map, use this feature.
S4820T
Syntax
set extcommunity rt {as4 ASN4:NN [non-trans] | ASN:NNNN [non-
trans] | IPADDR:NN [non-trans]} [additive]
To delete the Route Origin community, use the no set extcommunity command.
Parameters
as4 ASN4:NN Enter the keyword as4 then the 4-octet AS specific extended
community number in the format ASN4:NN (4-byte AS number:2-byte
community value).
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