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Creating a virtual link

When using OSPF, Passport 1424T Routing switches, which are ABRs, they need to be connected directly to the backbone. If they are not directly connected, they need to have a virtual link. In an Passport 1424T Routing switch, you can specify that virtual links be manually configure.

OSPF behavior has been modified according to OSPF standards so that OSPF routes cannot be learned through an area border router (ABR) unless it is connected to the backbone or through a virtual link.

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