F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100
813
943BConfiguring IPv6 BGP preference and default LOCAL_PREF
and NEXT_HOP attributes
To ensure an IBGP peer can find the correct next hop, you can configure routes advertised to the IPv6
IBGP peer or peer group to use the local router as the next hop. If BGP load balancing is configured, the
local router specifies itself as the next hop of routes sent to an IPv6 IBGP peer or peer group regardless
of whether the peer next-hop-local command is configured.
In a "third party next hop" network where the two IPv6 EBGP peers reside in a common broadcast subnet,
the router does not change the next hop for routes sent to the IPv6 EBGP peer or peer group by default,
unless the peer next-hop-local command is configured.
To perform this configuration:
Ste
p
Command
Remarks
1269. Enter system view.
system-view
N/A
1270. Enter BGP view.
bgp as-number N/A
1271. Enter IPv6 address
family view or IPv6 BGP-VPN
instance view.
ipv6-family [ vpn-instance
vpn-instance-name ]
N/A
1272. Configure preference
values for IPv6 BGP external,
internal, local routes.
preference { external-preference
internal-preference
local-preference | route-policy
route-policy-name }
Optional.
The default preference values of
external, internal, and local routes are
255, 255, and 130, respectively.
1273. Configure the default
local preference.
default local-preference value
Optional.
The value defaults to 100.
1274. Advertise routes to an
IPv6 peer or peer group with
the local router as the next
hop.
peer { ipv6-group-name |
ipv6-address } next-hop-local
By default, IPv6 BGP specifies the
local router as the next hop for routes
sent to an IPv6 EBGP peer or peer
group, but does not change the next
hop for routes sent to an IPv6 IBGP
peer or peer group.
The IPv6 BGP-VPN instance view does
not support this command.
944BConfiguring the MED attribute
Ste
p
Command
Remarks
1275. Enter system view.
system-view N/A
1276. Enter BGP view. bgp as-number N/A
1277. Enter IPv6 address
family view or IPv6 BGP-VPN
instance view.
ipv6-family [ vpn-instance
vpn-instance-name ]
N/A
1278. Configure a default
MED value.
default med med-value
Optional.
Defaults to 0.