Configuring the med attribute, Configuring the default med value – H3C Technologies H3C S5560 Series Switches User Manual
Page 246
230
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view or BGP-VPN
instance view.
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a.
bgp as-number
b.
ip vpn-instance
vpn-instance-name
N/A
3.
Enter BGP IPv6 unicast
address family view or
BGP-VPN IPv6 unicast
address family view.
address-family ipv6 [ unicast ]
N/A
4.
Configure the default local
preference.
default local-preference value
The default local preference is
100.
Configuring the MED attribute
BGP uses MED to determine the optimal route for traffic going into an AS. When a BGP router obtains
multiple routes with the same destination but with different next hops, it considers the route with the
smallest MED value as the optimal route if other conditions are the same.
Configuring the default MED value
To configure the default MED value (IPv4):
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view or BGP-VPN
instance view.
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance view:
a.
bgp as-number
b.
ip vpn-instance
vpn-instance-name
N/A
3.
Enter BGP IPv4 unicast
address family view or
BGP-VPN IPv4 unicast
address family view.
address-family ipv4 [ unicast ]
N/A
4.
Configure the default MED
value.
default med med-value
The default MED value is 0.
To configure the default MED value (IPv6):
Step Command
Remarks
1.
Enter system view.
system-view
N/A