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

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show ip bgp summary

Allows you to view the status of all BGP connections.

Syntax
show ip bgp [vrf vrf-name] [ipv4 {multicast | unicast} | ipv6 unicast] summary
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-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

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.
denied paths
Displays the number of denied paths and the amount of memory used.
BGP path attribute entries
Displays the number of BGP path attributes and the amount of memory used to process them.
BGP AS-PATH entries
Displays the number of BGP AS_PATH attributes processed and the amount of memory used to process them.
BGP community entries
Displays the number of BGP COMMUNITY attributes processed and the amount of memory used to process them. The show ip bgp community command provides more details on the COMMUNITY attributes.
Dampening enabled
Displayed only when you enable dampening. Displays the number of paths designated as history, dampened, or penalized.
Neighbor
Displays the BGP neighbor address.
AS
Displays the AS number of the neighbor.
MsgRcvd
Displays the number of BGP messages that neighbor received.
MsgSent
Displays the number of BGP messages that neighbor sent.
TblVer
Displays the version of the BGP table that was sent to that neighbor.
InQ
Displays the number of messages from that neighbor waiting to be processed.
OutQ
Displays the number of messages waiting to be sent to that neighbor. If a number appears in parentheses, the number represents the number of messages waiting to be sent to the peer group.
Up/Down

Displays the amount of time that the neighbor is in the Established stage. If the neighbor has never moved into the Established stage, the word never is displayed.

The output format is:

Time Established
Display Example
< 1 day
00:12:23 (hours:minutes:seconds)
< 1 week
1d21h (DaysHours)
> 1 week
11w2d (WeeksDays)
State/Pfxrcd

If the neighbor is in Established stage, the number of network prefixes received.

If a maximum limit was configured with the neighbor maximum-prefix command, (prfxd) appears in this column.

If the neighbor is not in Established stage, the current stage is displayed (Idle, Connect, Active, OpenSent, OpenConfirm). When the peer is transitioning between states and clearing the routes received, the phrase (Purging) may appear in this column.

If the neighbor is disabled, the phrase (Admin shut) appears in this column.

Example
DellEMC# show ip bgp summary
BGP router identifier 192.168.11.5, local AS number 100
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
2 network entrie(s) using 152 bytes of memory
2 paths using 208 bytes of memory
BGP-RIB over all using 210 bytes of memory
2 BGP path attribute entrie(s) using 144 bytes of memory
1 BGP AS-PATH entrie(s) using 10 bytes of memory
2 neighbor(s) using 16384 bytes of memory

Neighbor        AS            MsgRcvd  MsgSent     TblVer  InQ  OutQ Up/Down  State/Pfx
172.16.0.2      200                10        8          0    0     0 00:05:34 2 
192.168.10.2    100                 0       22          0    0     0 00:00:00 (shut)
DellEMC#

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