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Dell Command Line Reference Guide for the S4048–ON System 9.14.2.4

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show ip bgp dampened-paths

View BGP routes that are dampened (non-active).

Syntax
show ip bgp [vrf vrf-name] [ipv4 {multicast | unicast} | ipv6 unicast] dampened-paths
Parameters
vrf vrf-name
(OPTIONAL) Enter the keywords vrf and then the name of the VRF to view routes that are affected by a specific community list corresponding to that VRF.
ipv4 multicast
(OPTIONAL) Enter the keyword ipv4 followed by the keyword multicast to view information related only to ipv4 multicast routes.
ipv4 unicast
(OPTIONAL) Enter the keywords ipv4 followed by the keyword unicast to view information related only to ipv4 unicast routes.
ipv6 unicast
(OPTIONAL) Enter the keyword ipv6 followed by the keyword unicast to view information related only to ipv6 unicast routes.
Command Modes
  • EXEC

  • EXEC Privilege

Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100-ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Added the ipv4 multicast and ipv6 unicast parameters.
9.4(0.0)
Added support for VRF.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
7.8.1.0
Introduced on the S-Series.
7.7.1.0
Introduced on the C-Series.
Usage Information

To determine a BGP session flap, both a route-down event and a subsequent route-up event corresponding to a single route are considered. As a result, a flap event is penalized only one time during the route-down event. The subsequent route-up event corresponding to the same route is not considered as a flap and is not penalized.

The history paths that the show ip bgp command displays contain only the prefix and the next-hop information. The next-hop information shows the ip address of the neighbor. It does not show the actual next-hop details.

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
DellEMC# show ip bgp dampened-paths
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
BGP local router ID is 192.168.11.5
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r - redistributed
             n - network,  D - denied,  S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete

    Network            From            Reuse     Path

d   55.0.0.0/24      172.16.0.2             00:36:23      200

DellEMC#

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