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1000 CHAPTER 72: BGP CONFIGURATION COMMANDS
Description Use the peer preferred-value command to assign a preferred value to routes
received from a peer or peer group.
Use the
undo peer preferred-value command to restore the default value.
The default preferred value is 0.
Routes learned from a peer have an initial preferred value.
Among multiple routes that have the same destination/mask and are learned from
different peers, the one with the biggest preferred value is selected as the route to
the network.
Note that:
If you both reference a routing policy and use the peer { group-name | ip-address }
preferred-value value command to set a preferred value for routes from a peer,
the routing policy sets a specified non-zero preferred value for routes matching it.
Other routes not matching the routing policy uses the value set with the
command. If the preferred value specified in the routing policy is zero, the routes
matching it will also use the value set with the command. For information about
using a routing policy to set a preferred value, refer to “peer group
(BGP/BGP-VPN instance view)” on page 994, “peer route-policy
(BGP/BGP-VPN instance view)” on page 1002 { export | import } in this
document, and “apply preferred-value” on page 1194
Examples # In BGP view, configure the preferred value as 50 for routes from peer
131.108.1.1.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] peer 131.108.1.1 preferred-value 50
# In BGP-VPN instance view, configure the preferred value as 50 for routes from
peer 131.108.1.1 (the VPN has been created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1] peer 131.108.1.1 preferred-value 50
peer public-as-only (BGP/BGP-VPN instance view)
Syntax peer { group-name | ip-address } public-as-only
undo peer { group-name | ip-address } public-as-only
View BGP view/BGP-VPN instance view
Parameters group-name: Name of a peer group, a string of 1 to 47 characters.
ip-address: IP address of a peer.