Extreme Networks ExtremeWare XOS Command Reference Manual page 1633

ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
configure ospfv3 interface timer
The value of the dead interval and the hello interval must be same for all OSPFv3 routers connected to
a common link. The value of the dead interval and the hello interval are advertised by OSPFv3 in Hello
packets. The shorter the hello interval, the earlier topological changes will be detected, but more routing
traffic will ensue.
The retransmit interval must be greater than the expected round trip delay between any two routers on
the attached network. The setting of this parameter must be conservative, or needless retransmission
will result.
NOTE
The wait interval for the interface is not separately configurable. It is always equal to the dead interval.
Example
The following command sets the timers for the VLAN corporate:
configure ospfv3 domain ospf-default vlan corporate timer retransmit-interval 10
transit-delay 2 hello-interval 20 dead-interval 80
History
This command was first available in ExtremeWare XOS 11.2.
Platform Availability
This command is available on platforms with a Core or an Advanced Core license.
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ExtremeWare XOS 11.5 Command Reference Guide