Cisco ONS 15454 DWDM Manual

1-16
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports
c. Choose the appropriate state to place the port in service, out of service and disabled, out of service
for maintenance, or automatically in service from the Admin State column for the port being tested.
d. Click Apply.
e. Click Yes in the confirmation dialog box.
Step 6 Complete the “1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports” procedure
on page 1-16.
1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports
In the next troubleshooting test, you perform a terminal loopback on the intermediate-node port to isolate
whether the intermediate client or trunk port is causing circuit trouble. In the example situation in
Figure 1-6, the terminal loopback is performed on an intermediate MXP or TXP port in the circuit. If
you successfully complete a terminal loopback on the node, this node is excluded from possible sources
of circuit trouble.
Figure 1-6 Terminal Loopback on an Intermediate-Node MXP or TXP Port
Caution Performing a loopback on an in-service circuit is service-affecting.
Note Terminal loopbacks require on-site personnel.
Complete the “Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports” procedure on
page 1-17.
Destination
ONS Node
TXPTXP
Source
ONS Node
Intermediate
ONS Node
TXPTXPTXPTXP
145761
Regenerate
Te st Set
Client port

Cisco ONS 15454 DWDM Specifications

General

Chassis Type	DWDM
Form Factor	Rack-mountable
Slots	17
Storage Temperature	-40 to 158°F (-40 to 70°C)
Relative Humidity	5% to 95% non-condensing
Power Supply	AC or DC
Cooling	Internal fans
Operating Temperature	23 to 104°F (-5 to 40°C)
Altitude	0 to 6500 ft (0 to 1981 m)
Safety Compliance	EN 60950-1
EMI Compliance	FCC Part 15