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Usage guidelines
You can configure a virtual link to maintain connectivity between a non-backbone area and the
backbone, or in the backbone itself. A virtual link is similar to an interface with OSPFv3 enabled. You
can configure parameters such as hello, dead, retransmit and trans-delay for the virtual link.
Both ends of a virtual link must be ABRs that are configured with the vlink-peer command.
The following guidelines apply to parameters:
• The smaller the hello interval is, the faster the network converges, and the more network resources
are consumed.
• For a low speed link, set a large retransmission interval to avoid unnecessary retransmissions.
• Specify a transmission delay with the trans-delay keyword by considering the interface delay.
Examples
# Configure a virtual link to 10.10.0.3.
<Sysname> system-view
[Sysname] ospfv3 1
[Sysname-ospfv3-1] area 1
[Sysname-ospfv3-1-area-0.0.0.1] vlink-peer 10.10.0.3
Related commands
display ospfv3 vlink
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