OSPF6 Server Configuration¶

To configure the OSPF6 server, start in config-frr-ospf6 mode and run the server vrf default command:

tnsr(config)# route dynamic ospf6
tnsr(config-frr-ospf6)# server vrf default
tnsr(config-ospf6)#

Note

OSPF6 only supports a single instance on the default VRF.

This changes into config-ospf6 mode, which contains the following commands:

area <area-id>

Configures area-specific settings in OSPF6 Area Configuration mode.

auto-cost reference-bandwidth <bw>

A base value, in Mbit/s, which is used when OSPF6 automatically calculates cost values. The default value is 100 which means that an interface with 100Mbit/s of bandwidth or greater will have a cost of 1, with lower bandwidth values incurring higher cost values.

All routers in the same area should use the same value, otherwise automatic cost calculations would fail to accurately represent total path costs between routers.

default-information originate [(always|metric <val>|metric-type (1|2)|route-map <map>)]

Enables origination of a Type 5 AS-External LSA containing default route information into all areas capable of external routing.

always: Always advertise a default route, even when a default route is not present in the local routing table.
metric <0..16777214>: Advertise the default route as having the given metric.
metric-type (1|2): The type of metric, either 1 or 2. See Metric Types for details about each type operates.
route-map <map>: Apply the given route map to the outbound route advertisement.

distance [(external|inter-area|intra-area)] <dist>

Sets an administrative distance for routes obtained via OSPF6. This can be configured globally as well as for specific types of OSPF6 routes.

external <dist>: Sets the administrative distance for external OSPF6 routes.
inter-area <dist>: Sets the administrative distance for OSPF6 routes between areas.
intra-area <dist>: Sets the administrative distance for OSPF6 routes inside an area.

interface <if-name> area <area-id>

This command defines an interface as a member of the given OSPF6 area. This is required to activate an interface for use by OSPF6.

log-adjacency-changes [detail]

Instructs the OSPF6 daemon to log changes in neighbor adjacencies. This is useful for tracking changes to neighbor relationships, especially during initial configuration.

The optional detail parameter increases the verbosity of the resulting log messages.