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Configuring OSPFv3 route redistribution
Follow these steps to configure OSPFv3 route redistribution:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter OSPFv3 view
ospfv3
[
process-id
]
—
Specify a default cost for
redistributed routes
default cost
value
Optional
Defaults to 1
Redistribute routes from another
protocol, or another OSPFv3
process
import-route
protocol
[
process-id
|
allow-ibgp
]
[
cost
value
|
route-policy
route-policy-name
|
type
type
] *
Required
Not configured by
default
Inject a default route
default-route-advertise
[
always
|
cost
value
|
type
type
|
route-policy
route-policy-name
] *
Optional
Not injected by
default
Filter 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
NOTE:
•
Executing the
import-route
or
default-route-advertise
command on a router makes it become an
ASBR.
•
You can only inject and advertise a default route using the
default-route-advertise
command.
•
Because OSPFv3 is a link state routing protocol, it cannot directly filter LSAs to be advertised. You must
filter redistributed routes first. Routes that are not filtered out can be advertised in LSAs into the routing
domain.
•
Using the
filter-policy
export
command filters routes redistributed with the
import-route
command. If
the
import-route
command is not configured, executing the
filter-policy export
command does not take
effect.
Tuning and optimizing OSPFv3 networks
This section describes configurations of OSPFv3 timers, interface DR priority, MTU check ignorance for
DD packets, and disabling interfaces from sending OSPFv3 packets.
The following are 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 overloaded due to frequent network changes.
For a broadcast network, you can configure DR priorities for interfaces to affect DR or BDR election.
After an interface is disabled from sending OSPFv3 packets, other routers cannot obtain any information
from the interface.
