Advertisement
Chapter 1
General Troubleshooting
Figure 1-29
Terminal (Inward) Loopback on a G-Series Port
4 ports
GigE
GBIC 1
SERDES
GBIC 2
SERDES
GBIC 3
SERDES
GBIC 4
SERDES
Performing a loopback on an in-service circuit is service-affecting.
Caution
Complete the
page
Create the Terminal (Inward) Loopback on a Source-Node Ethernet Port
Connect an optical test set to the port you are testing:
Step 1
Note
a.
b.
Adjust the test set accordingly.
Step 2
Use CTC to set up the terminal (inward) loopback on the test port:
Step 3
a.
b.
July 2005
GigE
MAC
GigE
MAC
GigE
MAC
GigE
MAC
"Create the Terminal (Inward) Loopback on a Source-Node Ethernet Port" procedure on
1-65.
Refer to the manufacturer's instructions for detailed information about connection and setup of
the optical test set.
If you just completed the
"1.4.1 Perform a Facility (Line) Loopback on a Source-Node Ethernet
Port" procedure on page
1-62, leave the optical test set hooked up to the Ethernet port in the source
node.
If you are starting the current procedure without the optical test set hooked up to the source port,
use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. Both Tx and Rx connect to the same port.
In node view, click the Circuits tab and click Create.
In the Circuit Creation dialog box, choose the type, such as VC_HO, and number, such as 1.
1.4.2 Perform a Terminal (Inward) Loopback on a Source-Node Ethernet Port
Processor Subsystem
Terminal
Loopback
Path
FPGA
Termination
Block
Block
Facility
Loopback
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
Protect
RX BPIA
Protect
TX BPIA
BACKPLANE
BTC
STS48
192
Main
RX BPIA
Main
TX BPIA
1-65
Advertisement
