Configuring Cpe Toggle - Cisco Catalyst 2950 Software Configuration Manual

Configuring LRE Ports
Beginning in privileged EXEC mode, follow these steps to configure upstream power back-off on a
Catalyst 2950ST-24 LRE 997 switch:
Command
Step 1 configure terminal
Step 2 lre upbo {noise-model | offset value}
Step 3 end
Step 4
show controllers lre status psd
show controllers lre cpe version
Step 5
copy running-config startup-config
To return the switch to its default setting, use the no lre upbo {noise-model | offset value} global
configuration command.

Configuring CPE Toggle

The CPE toggle feature is enabled by default. It cannot be disabled on a link from a Cisco 575 LRE or
Cisco 576 LRE 997 CPE to a remote Ethernet device (such as PC).
You can disable CPE toggle on a Cisco 585 LRE CPE link. Then the CPE Ethernet link does not
transition to the up state when the LRE link comes up.
Beginning in privileged EXEC mode, follow these steps to disable CPE toggle on a Cisco 585 LRE CPE
link:
Command
Step 1
configure terminal
Step 2 interface interface-id
Step 3 no cpe toggle [port port-id]
Step 4 end
Step 5
show running-config
Step 6 copy running-config startup-config
To re-enable CPE toggle on the Cisco 585 LRE CPE link, use the cpe toggle [port port-id] interface
configuration command.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
12-22
Purpose
Enter global configuration mode.
Enter the noise level or the offset value. Supported noise-model
values are etsi-a, etsi-b, etsi-c, etsi-d and etsi-f.
The offset value is calculated with reference to –140. For
example, if you require a reference PSD of –95 dbm/Hz, you need
to enter the offset of 45 (–95 – [–140] = 45). The supported value
range is 300 to 800.
The LRE CPE power spectral density (PSD) offset value
Note
is in 10*dB (for example, 450 means 45 dB).
Return to privileged EXEC mode.
Verify the change.
Displays the LRE binary version running on the CPE.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Specify the LRE port to be configured, and enter interface
configuration mode.
Disable CPE toggle on a CPE Ethernet link.
(Optional) Specify the CPE port on which CPE toggle is disabled.
Return to privileged EXEC mode.
Verify the change.
(Optional) Save your entries in the configuration file.
Chapter 12 Configuring LRE
78-11380-12