17-10
Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
78-19416-01
Chapter 17 DLPs H100 to H199
•
Name—Name of the circuit. The circuit name can be manually assigned or automatically generated.
•
Type—Circuit types are: VC high-order path (VC high-order path circuit), VC low-order path (VC
low-order path circuit), VC low-order path (VC tunnel), VAP (VC low-order path aggregation
point), VC_HO_Path_Circuit (high-order path virtual concatenated [VCAT] circuit), or
VC_LO_Path_Circuit (VC low-order path VCAT circuit).
•
Size—Circuit size. VC low-order path circuits are 1.5. ONS 15310-MA SDH VC high-order path
circuits are 1, 3c, 6c, 9c, 12c, 24c, and 48c. VCAT circuits are VC-12-
n
v or VC3-
n
v, where
n
is the
number of members.
•
Protection—The type of circuit protection. See
for a list of protection types.
•
Dir—The circuit direction, either two-way or one-way.
•
Status—The circuit status.
lists the circuit statuses that may appear.
Table 17-4
Circuit Protection Types
Protection Type
Description
1+1
The circuit is protected by a 1+1 protection group.
N/A
A circuit with connections on the same node is not protected.
Protected
The circuit is protected by diverse SDH topologies, for example, a path protection
configuration and a 1+1 protection group.
Unknown
A circuit has a source and destination on different nodes and communication is
down between the nodes. This protection type appears if not all circuit components
are known.
Unprot (black)
A circuit with a source and destination on different nodes is not protected.
Unprot (red)
A circuit created as a fully protected circuit is no longer protected due to a system
change, such as removal of a 1+1 protection group.
Path protection
The circuit is protected by a path protection configuration.
Table 17-5
ONS 15310-MA SDH Circuit Status
Status
Definition/Activity
CREATING
CTC is creating a circuit.
DISCOVERED
CTC created a circuit. All components are in place and a
complete path exists from circuit source to destination.
DELETING
CTC is deleting a circuit.
Summary of Contents for ONS 15310-MA SDH
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