9-15
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 9 Configuring Interfaces
Configuring Optional Interface Features
To configure the debounce timer on a port, perform this task:
When configuring the debounce timer on a port, note the following information:
•
The
time
keyword is supported only on fiber Gigabit Ethernet ports.
•
You can increase the port debounce timer value in increments of 100 milliseconds up to
5000 milliseconds on ports operating at 1000 Mpbs over copper media.
•
Only releases earlier than Release 12.2(17a)SX support WS-X6502-10GE.
•
Releases earlier than Release 12.2(18)SXD assume that 10 Gbps ports use fiber media.
•
Release 12.2(18)SXD and later releases recognize 10 Gbps copper media.
•
Releases earlier than Release 12.2(18)SXD do not detect media-only changes.
•
Release 12.2(18)SXD and later releases detect media-only changes.
Table 9-2
lists the time delay that occurs before notification of a link change.
Note
On all 10-Gigabit Ethernet ports, the Debounce Timer Disabled is 10 milliseconds and the Debounce
Timer Enabled is 1 second.
This example shows how to enable the port debounce timer on Fast Ethernet port 5/12:
Router(config)#
interface fastethernet 5/12
Router(config-if)#
link debounce
Router(config-if)#
end
This example shows how to display the port debounce timer settings:
Router#
show interfaces debounce | include enable
Fa5/12 enable 3100
Command
Purpose
Step 1
Router(config)#
interface
type
1
slot/port
1.
type
=
ethernet
,
fastethernet
,
gigabitethernet
, or
tengigabitethernet
Selects the port to configure.
Step 2
Router(config-if)#
link debounce
[
time
debounce_time
]
Configures the debounce timer.
Router(config-if)#
no link debounce
Reverts to the default setting.
Step 3
Router#
show interfaces debounce
Verifies the configuration.
Table 9-2
Default Port Debounce Timer Delay Times
Port Type
Debounce Timer Disabled Debounce Timer Enabled
Ports operating at 10 Mpbs or 100 Mbps
300 milliseconds
3100 milliseconds
Ports operating at 1000 Mpbs or 10 Gbps over copper media
300 milliseconds
3100 milliseconds
Ports operating at 1000 Mpbs or 10 Gbps over fiber media
10 milliseconds
1
1.
10 milliseconds with Release 12.2(18)SXF13 and later releases.
100 milliseconds
WS-X6502-10GE 10-Gigabit ports
1000 milliseconds
3100 milliseconds
