3Com Switch 8800 Advanced Software V5 Configuration Guide

360 CHAPTER 31: IPV6 OSPFV3 CONFIGURATION
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■ Using the import-route command on a router makes the router become an
ASBR.
■ Since OSPFv3 is a link state based routing protocol, it cannot directly filter LSAs
to be advertised. Therefore, you need to configure filtering redistributed routes
before advertising routes that are not filtered in LSAs into the routing domain.
■ Use of the filter-policy export command takes effect only on the local router.
However, if the import-route command is not configured, executing the
filter-policy export command does not take effect.
Tuning and
Optimizing an OSPFv3
Network
This section describes configurations of OSPFv3 timers, interface DR priority, MTU
check ignorance for DD packets, disabling interfaces from sending OSPFv3
packets.
OSPFv3 timers:
■ Packet timer: Specified to adjust topology convergence speed and network
load
■ LSA delay timer: Specified especially for low speed links
■ SPF timer: Specified to protect networks from being over consumed due to
frequent network changes.
For a broadcast network, you can configure DR priorities for interfaces to affect
DR/BDR election.
By disabling an interface from sending OSPFv3 packets, you can make other
routers on the network obtain no information from the interface.
Prerequisites ■ Enable IPv6 packet forwarding
■ Configure OSPFv3 basic functions
Configuring OSPFv3
Timers
To configure OSPFv3 timers, use the following commands:
Specify a default cost
for redistributed
routes
default cost value Optional
Defaults to 1
Redistribute routes
from another protocol
or from another
OSPFv3 process
import-route { isisv6 process-id | ospfv3
process-id | ripng process-id | bgp4+ [
allow-ibgp ] | direct | static } [ cost value |
type { 1 | 2 } | tag value | route-policy
route-policy-name ] *
Optional
Configure the filtering
of redistributed routes
filter-policy { acl6-number | ipv6-prefix
ipv6-prefix-name } export [ isisv6
process-id | ospfv3 process-id | ripng
process-id | bgp4+ | direct | static ]
Optional
Not configured by
default
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-