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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 9 Ethernet Operation
G1000-4 Performance and Maintenance Screens
Figure 9-37 The G1000-4 Maintenance tab, including loopback and bandwidth information
Caution Use Loopback only for the initial test and turn-up of the card and SDH network tests. Do not put the card
in Loopback when the G1000-4 ports are in service and attached to a data network. Loopbacks can
corrupt the forwarding tables used in data networking.
Note For more information about using loopbacks with the ONS 15454 SDH, refer to the “Network Tests”
section of the Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide.
9.8.3 E-Series Ethernet Performance Screen
CTC provides Ethernet performance information that includes line-level parameters, the amount of port
bandwidth used, and historical Ethernet statistics.
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Loopback
Bandwidth
Loopback Type
Apply
Table 9-12 G1000-4 Maintenance Screen Values
Loopback Displays the Loopback status of the G1000-4 port
# Specifies the port number on the G1000-4 card
Loopback Type Allows you to configure a port for a Terminal (Inward) loopback or clear the
current loopback (none)
Apply Enables the Loopback configuration on the port
Bandwidth Displays the amount of STM bandwidth provisioned for the G1000-4 card.
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