Users Guide

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 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 different 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 different attribute values with the same cluster_id, then the cluster_id count is
1000, since the same value is stored for thousand different 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 different next-hops. If this same route is sent to a different peer, an entry
for each peer is created, as the next-hop is different. As a result, the BGP attributes count in the summary output
will differ accordingly.
The following describes the show ip bgp summary command shown in the following example.
Field Description
BGP router
identifier
Displays the local router ID and the AS number.
BGP table version Displays the BGP table version and the main routing table version.
network entries Displays the number of network entries, route paths, and the amount of memory used to
process those entries.
paths Displays the number of paths and the amount of memory used.
440 Border Gateway Protocol