Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 5 BGP Configuration Commands
3Com Corporation
5-53
5.1.58 preference
Syntax
preference value
undo preference
View
BGP protocol view, BGP multicast address family view
Parameter
value: Specifies the preference, ranging from 1 to 256. By default, the value is 170.
Description
Use the preference command to configure the preference of BGP protocol.
Use the undo preference command to restore the default preference.
Each kind of routing protocol has its own preference, by which the routing policy will
select the optimal from the routes of different protocols. The greater the preference
value is, the lower the preference is. BGP defines two kinds of routes: routes learned
from external peers and routes learned from internal peers. The preferences of the two
kinds of routes can be different, and can be set manually.
Different BGP preferences for different sub-address families are supported, so are
unicast address family and multicast address family at present.
Example
# Configure the preference of the BGP protocol to 150.
[3Com -bgp] preference 150
5.1.59 reflect between-clients
Syntax
reflect between-clients
undo reflect between-clients
View
BGP view, VPNv4 view, VPN instance view
Parameter
None