KB.15.15

About adjusting virtual link performance by changing the interface settings

The following OSPFv3 interface parameters are automatically set to their default values for virtual

links. No change to the defaults is usually required unless needed for specific network conditions.

This is a subset of the parameters described under “Adjusting performance by changing the VLAN

interface settings” (page 221). (The cost and priority settings are not configurable for a virtual

link, and the commands for reconfiguring the settings are accessed in the router OSPFv3 context

instead of the VLAN context.)

NOTE: The parameter settings described in this section for virtual links must be the same on the

ABRs at both ends of a given link.

PageDefaultParameter

22140 secondsdead-interval

22210 secondshello-interval

2225 secondsretransmit-interval

2221 secondtransit-delay

OSPFv3 passive

OSPFv3 sends LSAs to all other routers on the same VLAN interface. With OSPFv3 configured as

passive on a VLAN interface, the routing switch is identified as a route in the OSPFv3 domain, but

does not form an adjacency to any other router and does not send or receive OSPFv3 traffic on

the subject VLAN interface. (A VLAN configured as passive operates similar to a VLAN connected

to a stub network and does advertise the interface as a stub link into OSPFv3.)

Up to 128 active interfaces and a combined total of 512 active and passive interfaces are supported

on the routing switch.

OSPFv3 passive 261