R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

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Ste
p
Command Remarks
2. Enter BGP IPv6 unicast address
family view, BGP-VPN IPv6
unicast address family view, or
BGP IPv6 multicast address
family view.
• Enter BGP IPv6 unicast address
family view:
a. bgp as-number
b. address-family ipv6
[ unicast ]
• Enter BGP-VPN IPv6 unicast
address family view:
c. bgp as-number
d. ip vpn-instance
vpn-instance-name
e. address-family ipv6
[ unicast ]
• Enter BGP IPv6 multicast
address family view:
f. bgp as-number
g. address-family ipv6
multicast
N/A
3. Specify a preferred value for
routes received from a peer or
peer group.
peer { group-name |
ipv6-address } preferred-value
value
The default preferred value is 0.
Configuring preferences for BGP routes
Routing protocols each have a default preference. If they find multiple routes destined for the same
network, the route found by the routing protocol with the highest preference is selected as the optimal
route.
You can use the preference command to modify preferences for EBGP, IBGP, and local BGP routes, or
reference a routing policy to set a preference for matching routes. For routes not matching the routing
policy, the default preference applies.
If a device has an EBGP route and a local BGP route to reach the same destination, it does not select the
EBGP route because the EBGP route has a lower preference than the local BGP route by default. You can
use the network short-cut command to configure the EBGP route as a shortcut route that has the same
preference as the local BGP route. The EBGP route will more likely become the optimal route.
To configure preferences for BGP routes (IPv4 unicast/multicast address family):
Ste
p
Command Remarks
1. Enter system view.
system-view N/A