Cisco Catalyst 2950 Command Reference Manual page 328

Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show controllers lre actual
The local receive-power actually displays the switch's adjustment to the incoming power level. These
numbers might be different from LRE port to LRE port, as the length of the cables to the CPE devices
might be different.
If the SNR is too low for the environment but the link still establishes, the Reed-Solomon error rate is
high, and there might be link instability (as shown by the number of Fail events counted). If the network
is being used for data only, a high incidence of Ethernet Frame Check Sequence (FCS) errors or
micro-interruptions might be tolerable.
For more information about what can affect the LRE link and for the minimum required SNR ratios, see
the "LRE Links and LRE Profiles" section in the "Configuring LRE" chapter of the switch software
configuration guide for this release.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre interface-id actual dsrserrs command on
an LRE port:
Switch# show controllers lre longreachethernet0/2 actual dsrserrs
0
Switch#
This is an example of output from the show controllers lre interface-id actual link command on an LRE
port:
Switch# show controllers lre longreachethernet0/2 actual link
UP
Switch#
This is an example of output from the show controllers lre interface-id actual rxpower command on
an LRE port:
Switch# show controllers lre longreachethernet0/2 actual rxpower
26.0
Switch#
This is an example of output from the show controllers lre interface-id actual snr command on an LRE
port:
Switch# show controllers lre longreachethernet0/2 actual snr
27
Switch#
This is an example of output from the show controllers lre interface-id actual txpower command on
an LRE port:
Switch# show controllers lre longreachethernet0/2 actual txpower
-89.7
Switch#
This is an example of output from the show controllers lre interface-id actual usrserrs command on
an LRE port:
Switch# show controllers lre longreachethernet0/2 actual usrserrs
0
Switch#
Catalyst 2950 and Catalyst 2955 Switch Command Reference
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