3Com Switch 4800G 24-Port - Configuring Ipv6 BGP Route Attributes

474 CHAPTER 36: IPV6 BGP CONFIGURATION
Follow these steps to configure IPv6 BGP and IGP route synchronization:
Configuring Route
Dampening
Follow these steps to configure BGP route dampening:
Configuring IPv6 BGP
Route Attributes
This section describes how to use IPv6 BGP route attributes to modify BGP routing
policy. These attributes are:
■ IPv6 BGP protocol preference
■ Default LOCAL_PREF attribute
■ MED attribute
■ NEXT_HOP attribute
■ AS_PATH attribute
Prerequisites Before configuring this task, you have:
■ 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… Use the command… Remarks
Enter system view system-view -
Enter BGP view bgp as-number Required
Enter IPv6 address family view ipv6-family -
Enable route synchronization
between IPv6 BGP and IGP
synchronization Required
Not enabled by default
To do… Use the command… Remarks
Enter system view system-view -
Enter BGP view bgp as-number Required
Enter IPv6 address family view ipv6-family -
Configure IPv6 BGP route
dampening parameters
dampening [ half-life-reachable
half-life-unreachable reuse suppress
ceiling | route-policy
route-policy-name ]*
Optional
Not configured by
default
To do… Use the command… Remarks
Enter system view system-view -
Enter BGP view bgp as-number Required
Enter IPv6 address family view ipv6-family -
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, 130
respectively