Reference Guide

Interfaces | 565
Defaults
medium
Mode
Interface
Command
History
Usage
Information
This command only works on ports that the system recognizes as CX4 ports. The figure below shows
an attempt to configure an XFP port in an S25P with the command after inserting a CX4 converter into
the port:
Example
Figure 23-2. Example of Unsuccessful CX4 Cable Length Configuration
The figure below shows a successful CX4 cable length configuration.
Example
Figure 23-3. Example of CX4 Cable Length Configuration
For details on using XFP ports with CX4 cables, see your S-Series hardware guide.
Related
Commands
dampening
c e s
Configure dampening on an interface.
Syntax
dampening [[[[half-life] [reuse-threshold]] [suppress-threshold]] [max-suppress-time]]
To disable dampening, use the no dampening [[[[half-life] [reuse-threshold]]
[suppress-threshold]] [max-suppress-time]] command syntax.
Version 7.7.1.0 Introduced on S-Series
Note: When using a long CX4 cable between the C-Series and the S-Series, configure the
cable using the cx4-cable-length short command only to avoid any errors.
Note: 15M CX4 active cable is not supported on C-Series and S-series. It is only supported
for S2410 with active end on the device.
FTOS#show interfaces tengigabitethernet 0/26 | grep "XFP type"
Pluggable media present, XFP type is 10GBASE-CX4
FTOS(conf-if-te-0/26)#cx4-cable-length short
% Error: Unsupported command.
FTOS(conf-if-te-0/26)#cx4-cable-length medium
% Error: Unsupported command.
FTOS(conf-if-te-0/26)#cx4-cable-length long
% Error: Unsupported command.
FTOS(conf-if-te-0/26)#
FTOS#config
FTOS(config)#interface tengigabitethernet 0/52
FTOS(conf-if-0/52)#cx4-cable-length long
FTOS(conf-if-0/52)#show config
!
interface TenGigabitEthernet 0/51
no ip address
cx4-cable-length long
shutdown
FTOS(conf-if-0/52)#exit
FTOS(config)#
show config Display the configuration of the selected interface.