Release : 1.1f 837 / 985
Super Micro Intelligent Switch Command Line Interface User Guide
31.10 area - virtual-link
This command sets the Virtual Link between areas. In OSPFv3, all areas must be connected to a
backbone area. If there is a break in backbone continuity, or the backbone is purposefully
partitioned, a virtual link can be established. The two endpoints of a virtual link are ABRs. The
virtual link must be configured in both routers. The configuration information in each
router consists of the other virtual endpoint (the other ABR) and the non-backbone area that the
two routers have in common (called the transit area). If 20.0.0.3 is the Router ID of the Neighbor
and 100 is the Interface Index assigned to the OSPFv3 virtual interface, then this interface index
is advertised in Hello packet sent over the virtual link and in the router's router-LSAs.
area <area-id> virtual-link <router-id> <if-index> [hello-interval <1-
65535>] [retransmit-interval <1-1800>] [transmit-delay <1-1800>] [dead-
interval <1- 65535>]
Syntax Description
area-id - A 32 bit integer
virtual-link - The Router ID of the Virtual Neighbor
if-index - Interface Index assigned to the OSPFv3 virtual interface
hello-interval - The interval between hello packets on the OSPFv3 virtual link interface.
Retransmitinterval - The time between link-state advertisement (LSA) retransmissions for
adjacencies belonging to the OSPFv3 virtual link interface.
transmit-delay - The estimated time it takes to transmit a link state update packet over this
interface.
dead-interval - The interval at which hello packets must not be seen before its neighbors
declare the router down.
Mode
Router Configuration Mode
Defaults
hello-interval - 10
retransmit-interval - 20
transmit-delay - 1
dead-interval - 60
Example
SMIS(config-router)# area 1.1.1.1 virtual-link 20.0.0.3 1 hellointerval
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