Configuration Prerequisites; Configuring Ipv6 Bgp Preference And Default Local_Pref And Next_Hop Attributes; Configuring The Med Attribute - HP 3600 v2 series Configuration Manual

NEXT_HOP attribute
•
• AS_PATH attribute

Configuration prerequisites

Before configuring IPv6 BGP route attributes, complete the following tasks:
• Enabled IPv6 function
Configured IPv6 BGP basic functions
•
Configuring IPv6 BGP preference and default LOCAL_PREF
and NEXT_HOP attributes
Follow these steps to perform this configuration:
To do...
Enter system view
Enter BGP view
Enter IPv6 address family view
Configure preference values for
IPv6 BGP external, internal, and
local routes
Configure the default local
preference
Advertise routes to an IPv6 peer or
peer group with the local router as
the next hop
NOTE:
To ensure an iBGP peer can find the correct next hop, 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.
third party next hop
In a
•
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.

Configuring the MED attribute

Follow these steps to configure the MED attribute:
Use the command...
system-view
bgp as-number
ipv6-family
preference { external-preference
internal-preference
local-preference | route-policy
route-policy-name }
default local-preference value
peer { ipv6-group-name |
ipv6-address } next-hop-local
network where the two IPv6 eBGP peers reside in a common broadcast subnet,
336
Remarks
—
—
—
Optional
The default preference values of
external, internal, and local routes are
255, 255, and 130, respectively.
Optional
The value defaults to 100.
Required
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.