R2511-HP MSR Router Series IP Multicast Command Reference(V5)

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default med (MBGP address family view)
Use default med to specify the default MED value.
Use undo default med to restore the default.
Syntax
default med med-value
undo default med
Default
The default MED value is 0.
Views
IPv4 MBGP address family view
Default command level
2: System level
Parameters
med-value: Specifies the default MED value in the range of 0 to 4294967295.
Usage guidelines
Multi-exit discriminator (MED) is an external metric for routes. Different from local preference, MED is
exchanged between ASs and stays in the AS after it enters the AS. The route with a lower MED is
preferred. When a router that runs BGP obtains several routes with an identical destination but different
next hops from various external peers, it selects the best route depending on the MED value. If all other
conditions are the same, the system selects the route with the smallest MED as the best external route.
Examples
# In IPv4 MBGP address family view, configure the default MED as 25.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family multicast
[Sysname-bgp-af-mul] default med 25
default-route imported (MBGP address family view)
Use default-route imported to allow default route redistribution into the MBGP routing table.
Use undo default-route imported to restore the default.
Syntax
default-route imported
undo default-route imported
Default
Default route redistribution is not allowed.
Views
IPv4 MBGP address family view