Users Guide

Parameters
vrf vrf-name (OPTIONAL) Enter the keyword vrf and then the name of the VRF to view the status of
all BGP connections 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 keyword 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-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
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.
9.4.(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
In BGP, route attributes are maintained at dierent locations. When attributes that correspond to multiple routes
change, then attribute counts that the show ip bgp summary command displays are calculated as
summations of attributes corresponding to all the associated routes. For example, if cluster_id is an attribute
associated with thousand routes that contain exactly the same set of attributes, then the cluster_id count is 1. If
these thousand routes are set with dierent attribute values with the same cluster_id, then the cluster_id count is
1000, since the same value is stored for thousand dierent attribute records.
The attribute next-hop is a part of the BGP attribute data structure.
If two peers send the same route that contains similar path attributes, then two entries are maintained in the back-
end, as both these entries have dierent next-hops. If this same route is sent to a dierent peer, an entry for each
peer is created, as the next-hop is dierent. As a result, the BGP attributes count in the summary output will dier
accordingly.
The following describes the show ip bgp summary command shown in the following example.
Border Gateway Protocol 425