Verilink T1 Access Router (34-00327) Product Manual Manuel d'utilisateur télécharger pdf (Page 166)

4-58 T1 Access Router

It is possible that an area cannot be connected directly to the backbone. In this

case a virtual link is used. To establish or maintain the connectivity of the

backbone, virtual links can be configured through non-backbone areas.

Basically, virtual links are used to connect components that are otherwise not

connected to the backbone.

A virtual link is treated by OSPF as a point-to-point unnumbered network

joining two area border routers. The virtual link must be configured in both of

the area border routers.

A virtual link is defined by the following two parameters:

• The Router ID of the virtual link’s other endpoint

• The non-backbone area the virtual link goes through.

Figure 4.51

Virtual Link Table Screen

The fields displayed on the Virtual Link Table screen are described below.

Virtual Link Details Screen

This screen displays the details associated with the specific Virtual Link.

Field Description

Enable Enables the definition of a virtual link.

Transit Area ID The non-backbone area the virtual link goes through.

Area Border

Router ID

The Router ID of the virtual link’s other endpoint.

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Verilink T1 Access Router (34-00327) Product Manual Manuel d'utilisateur Page 166