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3com S7906E Instruccion De Instalación

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1-8 
Prerequisites 
Before configuring this task, you need to configure MBGP basic functions. 
Configuring MBGP Route Preferences 
You can reference a route policy to set preferences for routes matching it. Routes not matching it use 
the default preferences. 
Follow these steps to configure MBGP route preferences: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
— 
Enter BGP view 
bgp as-number 
— 
Enter IPv4 MBGP address family 
view 
ipv4-family multicast 
— 
Configure preferences for 
external, internal, local MBGP 
routes 
preference 
{ external-preference 
internal-preference 
local-preference | 
route-policy 
route-policy-name } 
Optional 
The default preferences of 
multicast MBGP eBGP, MBGP 
iBGP, and local MBGP routes 
are 255, 255, and 130 
respectively. 
 
Configuring the Default Local Preference 
Follow these steps to configure the default local preference: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
— 
Enter BGP view 
bgp as-number 
— 
Enter IPv4 MBGP address family 
view 
ipv4-family multicast 
— 
Configure the default local 
preference 
default local-preference 
value 
Optional 
100 by default. 
 
Configuring the MED Attribute 
When other conditions of routes to a destination are identical, the route with the smallest MED is 
selected. 
Follow these steps to configure the MED attribute: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
— 
Enter BGP view 
bgp as-number 
— 
Enter IPv4 MBGP address family 
view 
ipv4-family multicast 
—