Chapter 19
| Unicast Routing
Configuring the Open Shortest Path First Protocol (Version 2)
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Figure 507: Showing OSPF Interfaces
To show the MD5 authentication keys configured for an interface:
1. Click Routing Protocol, OSPF, Interface.
2. Select Show MD5 Key from the Action list.
3. Select the VLAN ID.
Figure 508: Showing MD5 Authentication Keys
Configuring
Virtual Links
Use the Routing Protocol > OSPF > Virtual Link (Add) and (Configure Detailed
Settings) pages to configure a virtual link from an area that does not have a direct
physical connection to the OSPF backbone.
All OSPF areas must connect to the backbone. If an area does not have a direct
physical connection to the backbone, you can configure a virtual link that provides
a logical path to the backbone. To connect an isolated area to the backbone, the
logical path can cross a single non-backbone area (i.e., transit area) to reach the
backbone. To define this path, you must configure an ABR that serves as an
endpoint connecting the isolated area to the common transit area, and specify a
neighboring ABR at the other endpoint connecting the common transit area to the
backbone itself. (Note that you cannot configure a virtual link that runs through a
stub or NSSA.)
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