3com MSR 20-20 참조 매뉴얼

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C
HAPTER
 98: MPLS L3VPN C
ONFIGURATION
 C
OMMANDS
undo default local-preference
View
BGP-VPNv4 subaddress family view
Parameter
value: Default value for the local preference, in the range 0 to 4294967295. A 
greater value represents a higher priority.
Description
Use the default local-preference command to set the default value of the local 
preference.
Use the undo default local-preference command to restore the default.
By default, the default value of the local preference is 100.
Example
# With devices A and B connected to the outside AS, configure B with a default 
local preference of 180 in BGP-VPNv4 subaddress family view, allowing the route 
going through B to be preferred when more than one route is present.
<Sysname> system-view
[Sysname] bgp 100
[Sysname] ipv4-family vpnv4
[Sysname-bgp-af-vpnv4] default local-preference 180 
default med (BGP-VPNv4 subaddress family view)
Syntax
default med med-value
undo default med
View
BGP-VPNv4 subaddress family view
Parameter
med-value: MED value, in the range 0 to 4,294,967,295.
Description
Use the default med command to set the default system metric.
Use the undo default med command to restore the default.
With other criteria the same, the system selects the route with a smaller MED 
value as the AS external route.
By default, the MED value is 0.
Example
# Set the default MED to 10 for PE 1 in BGP-VPNv4 subaddress family view.
<Sysname> system-view
[Sysname] bgp 100
[Sysname] ipv4-family vpnv4
[Sysname-bgp-af-vpnv4] default med 10