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Chapter 7 Circuits and Tunnels
Server Trails
The server trail link is bidirectional and can be VC3, VC11, VC12, VC4,
Note There is no OSPF or any other management information exchange between NEs over a server trail.
7.12.1 Server Trail Protection Types
The server trail protection type determines the protection type for any circuits that traverse it. A server trail link can be one of the following protection types:
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•
•Fully
Note Only SNCP protection is available on server trails.
7.12.2 VCAT Circuit Routing over Server Trails
An
For example, to route a
Note Server trails can only be created between any two optical ports or
VCAT circuities can be created over server trails in the following ways:
•Manual routing
•Automatic routing
–Diverse routing: This method enables VCAT circuit routing over diverse server trail links.
Note When creating circuits or VCATs, you can choose a server trail link during manual circuit routing. CTC may also route circuits over server trail links during automatic routing. VCAT
Cisco ONS
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