3com S7906E Manuel De Montage

 

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This section does not differentiate between BGP and MP-BGP. 

 

The neighboring nodes are accessible to each other at the network layer. 

A router ID is the unique identifier of a BGP router in an AS.  

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To ensure the uniqueness of a router ID and enhance network reliability, you can specify in BGP 

view the IP address of a local loopback interface as the router ID. 

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If no router ID is specified in BGP view, the global router ID is used. For information about global 

router ID, refer to IP Routing Basics in the IP Routing Volume. 

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If the global router ID is used and then it is removed, the system will select a new router ID. 

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If the router ID is specified in BGP view, using the undo router-id command can make the system 

select a new router ID. 

Follow these steps to create a BGP connection: 

Enter system view 

— 

Enable BGP and enter BGP 
view 

bgp as-number 

— 

Not enabled by default 

Specify a Router ID 

router-id ip-address 

Optional 

By default, the global router ID is 
used. 

Specify a peer or a peer group 
and its AS number 

peer { group-name | 
ip-address } as-number 
as-number 

Required 

Not specified by default 

Enable the default use of IPv4 
unicast address family for the 
peers that are established 
using the peer as-number 
command 

Optional 

Enabled by default 

Enable a peer 

peer ip-address enable 

Optional 

Enabled by default 

Configure a description for a 
peer/peer group 

peer { group-name | 
ip-address } description 
description-text 

Not configured by default.