R211x-HP Flexfabric 11900 Layer 3 - IP Routing Command Reference

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hello seconds: Sets the hello interval in the range of 1 to 8192 seconds. The default is 10. It must be
identical with the hello interval on the virtual link neighbor.
instance instance-id: Sets the instance ID of a virtual link, in the range of 0 to 255. The default is 0.
retransmit seconds: Sets the retransmission interval in the range of 1 to 3600 seconds. The default is 5.
trans-delay seconds: Sets the transmission delay interval in the range of 1 to 3600 seconds. The default
is 1.
Usage guidelines
For a non-backbone area without a direct connection to the backbone area or for a backbone area that
cannot maintain connectivity, you can use the vlink-peer command to create logical links. A virtual link
can be considered as an interface with OSPFv3 enabled, because parameters such as hello, dead,
retransmit and trans-delay are configured in the similar way.
Both ends of a virtual link are ABRs that are configured with the vlink-peer command.
Considerations on parameters:
• The smaller the hello interval is, the faster the network converges, and the more network resources
are consumed.
• A retransmission interval that is too small can cause unnecessary retransmissions. A large value is
appropriate for a low speed link.
• Specify an appropriate transmission delay with the trans-delay keyword.
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