Configuring Ipv6 Bgp Route Attributes - 3Com Switch 4800G 24-Port Configuration Manual

474 C 36: IP 6 BGP C
HAPTER V
Configuring Route
Dampening
Configuring IPv6 BGP
Route Attributes
Prerequisites
Configuring IPv6 BGP
Preference and Default
LOCAL_PREF and
NEXT_HOP Attributes
ONFIGURATION
Follow these steps to configure IPv6 BGP and IGP route synchronization:
To do...
Enter system view
Enter BGP view
Enter IPv6 address family view
Enable route synchronization
between IPv6 BGP and IGP
Follow these steps to configure BGP route dampening:
To do...
Enter system view
Enter BGP view
Enter IPv6 address family view ipv6-family
Configure IPv6 BGP route
dampening parameters
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
■
Before configuring this task, you have:
Enabled IPv6 function
■
Configured IPv6 BGP basic functions
■
Follow these steps to perform this configuration:
To do...
Enter system view
Enter BGP view
Enter IPv6 address family view ipv6-family
Configure preference values
for IPv6 BGP external, internal,
local routes
Use the command...
system-view
bgp as-number
ipv6-family
synchronization
Use the command...
system-view
bgp as-number
dampening [ half-life-reachable
half-life-unreachable reuse suppress
ceiling | route-policy
route-policy-name ]*
Use the command...
system-view
bgp as-number
preference
{ external-preference
internal-preference
local-preference |
route-policy
route-policy-name }
Remarks
-
Required
-
Required
Not enabled by default
Remarks
-
Required
-
Optional
Not configured by
default
Remarks
-
Required
-
Optional
The default preference values
of external, internal and local
routes are 255, 255, 130
respectively