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Chapter 20
DLPs D300 to D399
DLP-D338 Install Fiber-Optic Cables for MS-SPRing Configurations
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
To avoid error, connect fiber-optic cable so that the farthest slot to the right represents the east port, and
Note
the farthest slot to the left represents the west port. Fiber connected to an east port at one node must plug
into the west port at an adjacent node.
Do not provision MS-SPRing east and west ports on the same STM-N card.
Caution
Step 1
Plan your fiber connections. Use the same plan for all MS-SPRing nodes.
Step 2
Plug the fiber into the Tx connector of an STM-N card at one node and plug the other end into the Rx
connector of an STM-N card at the adjacent node. The card displays a SF LED if the transmit and receive
fibers are mismatched.
Note
Repeat
Step 3
Figure 20-9
and Slot 12 (east).
78-17194-01
This task installs the fiber optic cables to the east and west MS-SPRing
ports at each node. See
test MS-SPRing configurations.
Fiber-optic cables
NTP-D112 Clean Fiber Connectors, page 15-15
As needed
Onsite
None
Do not mix working and protect card connections when connecting a four-fiber MS-SPRing. The
MS-SPRing does not function if working and protect cards are interconnected. See
on page 20-39
for an example of correct four-fiber MS-SPRing cabling.
Step 2
until you have configured the ring.
shows fiber connections for a two-fiber MS-SPRing with trunk (span) cards in Slot 5 (west)
DLP- D338 Install Fiber-Optic Cables for MS-SPRing Configurations
Chapter 5, "Turn Up a Network"
Cisco ONS 15454 SDH Procedure Guide, R7.0
to provision and
Figure 20-10
20-37
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