Configuring The Port Debounce Timer - Cisco 6500 Series Software Configuration Manual

Chapter 6 Configuring Interfaces
When configuring flow control, note the following syntax information:
•
•
•
•
•
This example shows how to turn on receive flow control and how to verify the flow-control
configuration:
Router# configure terminal
Router(config)# interface gigabitethernet 1/2
Router(config-if)# flowcontrol receive on
Router(config-if)# end
Router# show interfaces flowcontrol
Interface Send
Gi1/1
Gi1/2
Fa5/1
<output truncated>

Configuring the Port Debounce Timer

The port debounce timer delays notification of a link change, which can decrease traffic loss due to
network reconfiguration. Release 12.1(13)E and later releases support the port debounce timer on all
LAN ports. You can configure the port debounce timer separately on each LAN port.
Enabling the port debounce timer causes link up and link down detections to be delayed, resulting in loss
Caution
of traffic during the debouncing period. This situation might affect the convergence and reconvergence
of some Layer 2 and Layer 3 protocols.
Table 6-2
Table 6-2
Port Type
10BASE-FL ports
10/100BASE-TX ports
100BASE-FX ports
10/100/1000BASE-TX ports
1000BASE-TX ports
78-14099-04
10-Gigabit Ethernet ports are permanently configured to respond to pause frames.
When the configuration of the remote ports is unknown, use the receive desired keywords to
configure a Gigabit Ethernet port to respond to received pause frames.
Use the receive on keywords to configure a Gigabit Ethernet port to respond to received pause
frames.
Use the receive off keywords to configure a Gigabit Ethernet port to ignore received pause frames.
When configuring transmission of pause frames, note the following information:
When the configuration of the remote ports is unknown, use the send desired keywords to
–
configure a port to send pause frames.
– Use the send on keywords to configure a port to send pause frames.
Use the send off keywords to configure a port not to send pause frames.
–
Receive
Desired OFF
Desired ON
Not capable OFF
lists the time delay that occurs before notification of a link change.
Port Debounce Timer Delay Time
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
Debounce Timer Disabled
300 milliseconds
300 milliseconds
300 milliseconds
300 milliseconds
300 milliseconds
Configuring Optional Interface Features
Debounce Timer Enabled
3100 milliseconds
3100 milliseconds
3100 milliseconds
3100 milliseconds
3100 milliseconds
6-15