Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 783 / 874

Chapter 17 Hardware procedures 783
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Replacing a CP Ethernet cable
Replace a CP Ethernet cable if it is faulty or as part of a CP replacement
procedure.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• If you using a custom-made cable, it should conform to the standards
available from Nortel Networks. For information on cable specifications,
241-1501-200 Passport 15000, 20000 Hardware Description.
• The expected behavior when an Ethernet cable fails, or is pulled from the
active CP, is that a CP switchover will occur. You can change this
behavior by disabling the SwitchoveronFailure attribute. See
241-5701-600 Passport 7400, 15000, 20000 Configuration Guide
Procedure steps
1 On the faceplate of the CP, locate the cable to be replaced at port P0.
2 Measure the exact length of the cable to be replaced to ensure that the
replacement will reach both terminations. See the figure “Route of a CP
cable” (page 784).
3 Using the part number labels, match a duplicate of the old cable to a pre-
assembled cable from Nortel Networks, or if making a cable, match
quality, ratings, length, and the connectors at either end. The existing
cable sheath has identification markings on it. If making the cable, add the
connectors according to the manufacturer’s instructions.
4 Route the replacement cable parallel to the cable bundle that has the
older cable being replaced. Fasten the middle span of the replacement
cable independently from the older cable.
5 Unplug the old cable at each end and immediately plug in the new cable.
6 Cut the connectors off the end of the old cable. If tugging or pulling on the
older cable can affect the operation of any other cable, leave the old cable
in position unless it can be easily removed.