Administrator Guide

Command History
Version Description
9.7(0.0) Introduced on the S-Series and Z-Series.
Usage Information
Configuring or un-configuring the command will bring down and bring up the BGP Route Manager, this will result
in tear down and re-establishment of all active sessions.
Link Bandwidth has to be configured on the router in order to tell it to associate Link Bandwidth with prefixes
(paths) and/or to use Link Bandwidth in BGP Multipath route selection.
This is done under BGP configuration and is supported per address family – for IPv4 and IPv6 address families.
The configuration for a particular address family will apply across all VRFs configured.
This command must be performed on the router which is attaching link bandwidth to prefixes (typically a border
router) as well as the router which is expected to load share traffic proportional to the bandwidth of the external
links.
neighbor ebgp-multihop
Attempt and accept BGP connections to external peers on networks that are not directly connected.
C9000 Series
Syntax
neighbor {ip-address | peer-group-name} ebgp-multihop [ttl]
To disallow and disconnect connections, use the no neighbor {ip-address | peer-group-name}
ebgp-multihop command.
Parameters
ip-address Enter the IP address of the neighbor in dotted decimal format.
peer-group-name Enter the name of the peer group.
ttl (OPTIONAL) Enter the number of hops as the Time to Live (ttl) value. The range is from 1
to 255. The default is 255.
Defaults Disabled.
Command Modes ROUTER BGP
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
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 prevent loops, the neighbor ebgp-multihop command does not install the default routes of the multihop
peer. Networks not directly connected are not considered valid for best-path selection.
354 Border Gateway Protocol