Tip
This is the documentation for the 20.10 version. Looking for the documentation of the latest version? Have a look here.
OSPF6 Server ConfigurationΒΆ
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 of1
, 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.
- 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.- ospf6 router-id <router-id>:
Sets the router ID for the OSPF6 daemon. This is typically set to an IPv4 address unique to this router, and commonly is set to a local private address.
Note
Even though OSPF6 handles IPv6 routing, router IDs are still specified using IPv4 addresses in dotted quad notation.
- redistribute <route-source> [route-map <map>]:
Enables redistribution of routes from another source. Available route sources are listed in Dynamic Routing Protocol Lists.
- route-map <map>:
Apply the given route map to the redistributed route advertisements.
- stub-router administrative:
Administratively declares this router as a stub router, having no external connections.
- timers lsa min-arrival <min>:
The minimum time allowed between advertisements by neighbors, from
0-600000
, in milliseconds. Default is1000
.- timers throttle spf (delay|initial-hold|maximum-hold) <val>:
Controls timers that determine when the router will make SPF routing decisions.
- delay <val>:
Minimum time after an event occurs before allowing SPF calculation. Lower values will react faster to changes, but can be less stable. Specified in milliseconds from
0-600000
, with a default value of0
.- initial-hold <val>:
Lowest time allowed between SPF calculations. Specified in milliseconds from
0-600000
, with a default value of50
.- maximum-hold <val>:
Highest time allowed between SPF calculations. Specified in milliseconds from
0-600000
, with a default value of5000
.
SPF calculations are adaptive, and if a new event occurs which would otherwise trigger a calculation before the hold timer expires, then the hold is increased by the
initial-hold
value, up to the specifiedmaximum-hold
. This avoids excessive consecutive recalculations.