Alcatel-Lucent 6850-48 参考指南

BGP Commands

OmniSwitch CLI Reference Guide

page 44-71

Allows external peers to communicate with each other even when they are not directly connected. The 
absence of communication between disconnected peers can occur when a router that is not running BGP 
sits between two BGP speakers; in such a scenario the BGP speakers are multiple hops from each other. 
By enabling this command, you allow the BGP peers to speak to each other despite the non-BGP router 
that sits between them.

ip bgp neighbor ip_address ebgp-multihop [ttl]

no ip bgp neighbor ip_address ebgp-multihop

32-bit IP address of the BGP peer. 

The Time to Live for the multi-hop connection, in seconds. The range is 
1 to 255.

This command is disabled by default.

OmniSwitch 6850, 6855, 9000, 9000E

• Use the no form of this command to disable multi-hop connections.

• By default an external BGP peer is on a directly connected subnet. This command allows you to 

configure an external BGP peer that is not directly connected and may be multiple hops away. It should 
be used with caution and only with the guidance of qualified technical support. 

• As a safeguard against loops, the multi-hop connection will not be made if the only route to a multi-

hop peer is the default route (0.0.0.0). 

• The BGP peer is restarted after issuing this command.

-> ip bgp neighbor 172.22.2.115 ebgp-multihop 250

-> no ip bgp neighbor 172.22.2.115 ebgp-multihop 50

Release 6.1; command was introduced.

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