H3C S3600 Series

Operation Manual – Routing Protocol
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 4
OSPF Configuration
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z A virtual link cannot pass through a stub area. The backbone area (Area 0)
cannot be configured as a stub area. So, if a virtual link has been set up between
RTB and RTC, neither Area 1 nor Area 0 can be configured as a stub area. In
Figure 4-5, only Area 2 can be configured as a stub area.
z A router in a stub area cannot receive external routes.
The backbone area must guarantee the connectivity between various nodes.