Enabling Compatibility With Rfc 1583; Logging Neighbor State Changes - HP FlexFabric 12900E Series Configuration Manual

Step
1. Enter system view.
2. Enter OSPF view.
3. Set the OSPF exit overflow
interval.

Enabling compatibility with RFC 1583

RFC 1583 specifies a different method than RFC 2328 for selecting the optimal route to a destination
in another AS. When multiple routes are available to the ASBR, OSPF selects the optimal route by
using the following procedure:
1. Selects the route with the highest preference.
If RFC 2328 is compatible with RFC 1583, all these routes have equal preference.

If RFC 2328 is not compatible with RFC 1583, the intra-area route in a non-backbone area

is preferred to reduce the burden of the backbone area. The inter-area route and intra-area
route in the backbone area have equal preference.
2. Selects the route with the lower cost if two routes have equal preference.
3. Selects the route with the larger originating area ID if two routes have equal cost.
To avoid routing loops, set identical RFC 1583-compatibility on all routers in a routing domain.
To enable compatibility with RFC 1583:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enable
with RFC 1583.

Logging neighbor state changes

Perform this task to enable output of neighbor state change logs to the information center. The
information center processes the logs according to user-defined output rules (whether and where to
output logs). For more information about the information center, see Network Management and
Monitoring Configuration Guide.
To enable the logging of neighbor state changes:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enable
neighbor state changes.
Command
system-view
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
lsdb-overflow-interval interval
Command
system-view
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
compatibility
rfc1583 compatible
Command
system-view
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
the logging of
log-peer-change
90
Remarks
N/A
N/A
The default setting is 300
seconds.
The value of 0 indicates that
OSPF does not exit overflow
state.
Remarks
N/A
N/A
By default, compatibility with RFC
1583 is enabled.
Remarks
N/A
N/A
By default, this feature is
enabled.