4 area virtual-link, Area virtual, Link – PLANET XGS3-24042 User Manual

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introducing cost is defined with area default-cost command.

Example:

Switch # config terminal

Switch (config)# router ipv6 ospf

Switch (config-router)# area 1 stub

Relevant Commands:

area default-cost

36.4 area virtual-link

Command:

area <id> virtual-link A.B.C.D [instance-id <instance-id> | INTERVAL <value>]

no area <id> virtual-link A.B.C.D [instance-id <instance-id> | INTERVAL]

Function:

Configure a logical link between two backbone areas physically divided by non-backbone area. The

no area <id> virtual-link A.B.C.D [instance-id <instance-id> | INTERVAL]” command removes

this virtual-link.

Parameter:

<id> is the area number which could be digits ranging between 0~4294967295, and also as an IP

address.

<instance-id> is the interface instance ID ranging between 0~255 and defaulted at 0

INTERVAL= [dead-interval|hello-interval|retransmit-interval|transmit-delay]

<value>: The delay or interval seconds, ranging between 1~65535

<dead-interval>: A neighbor is considered offline for certain dead interval without its group

messages which the default is 40 seconds.

<hello-interval>: The time interval before the router sends a hello group message, default is 10

seconds

<retransmit-interval>: The time interval before a router retransmitting a group message, default

is 5 seconds

<transmit-delay>: The time delay before a router sending a group messages, 1 second by default

Default:

No default configuration.

Command Mode:

OSPFv3 protocol mode

Usage Guide:

In the OSPF all non-backbone areas will be connected to a backbone area. If the connection to the

backbone area is lost, virtual link will repair this connection. You can configure virtual link between

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