R3303-HP 6600/HSR6600 Routers Layer 3 - IP Routing Configuration Guide

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Step Command Remarks
3. Configure preferences for
external, internal, local BGP
routes.
preference { external-preference
internal-preference
local-preference | route-policy
route-policy-name }
Optional.
The default preferences of external,
internal, and local BGP routes are
255, 255, and 130, respectively.
4. Increase the preference of a
received EBGP route.
network ip-address [ mask |
mask-length ] short-cut
Optional.
By default, an EBGP route received
has a preference of 255.
Configure the default local preference
The local preference is used to determine the best route for traffic leaving the local AS. When a BGP
router obtains from several IBGP peers multiple routes to the same destination but with different next hops,
it considers the route with the highest local preference as the best route.
This task allows you to specify the default local preference for routes sent to IBGP peers.
To specify the default local preference:
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. ipv4-family vpn-instance
vpn-instance-name
Use either method.
3. Configure the default local
preference.
default local-preference value
Optional.
The default local preference is
100.
Configuring the MED attribute
MED is used to determine the best route for traffic going into an AS. When a BGP router obtains from
EBGP peers multiple routes to the same destination but with different next hops, it considers the route with
the smallest MED value as the best route if other conditions are the same.
Configuring the default MED value
Step Command Remarks
1. Enter system view.
system-view N/A