Nortel Optical Multiservice Edge 6130, Руководство по планированию, Страница: 81 / 292

OAM&P description 6-21
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Note: The OME6130 supports nodal provisioning. When provisioning an
end-to-end circuit, you must ensure that the traffic protection as well as
cross-connections are performed at the end-points as well as any
passthrough nodes that make up the end-to-end circuit.
For detailed procedures for SNCP protection, refer to Provisioning and
Protection Switching Procedures , 323-1855-310.
SNCP protection switch criteria
A SNCP protection switch request can occur automatically by the system or
by user initiated actions.
Table 6-8 summarizes the hierarchy of protection commands.
For a complete description and procedures, see Provisioning and Protection
Switching Procedures , 323-1855-310.
Unprotected connections
Unprotected configurations consists of end-to-end paths that do not have an
alternate path. In the case of the a fault on the unprotected path, traffic is lost.
Note: Unprotected is the default traffic protection configuration for the
port interfaces in OME6130.
Table 6-8:
SNCP protection - command hierarchy
Switch request Priority
Lockout of protection 1 (Highest)
Forced switch 2
Auto switch (P-AIS, P-LOP, P-UNEQ) 3
Auto switch (P-SF) 4
Auto switch (P-SD) 5
Manual switch on protection path 6
Manual switch on working path 7
Wait-to-Restore 8 (lowest)