About The Debounce Timer Parameters; About Mtu Configuration; Configuring The Udld Mode - Cisco nexus 5000 series Cli Configuration Manual

Configuring Ethernet Interfaces
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
Interface Speed
A Cisco Nexus 5000 Series switch has a number of fixed 10-Gigabit ports, each equipped with SFP+
interface adapters. The Nexus 5010 switch has 20 fixed ports, the first eight of which are switchable
1-Gigabit/10-Gigabit ports. The Nexus 5020 switch has 40 fixed ports, the first 16 of which are
switchable 1-Gigabit/10-Gigabit ports.

About the Debounce Timer Parameters

The port debounce time is the amount of time that an interface waits to notify the supervisor of a link
going down. During this time, the interface waits to see if the link comes back up. The wait period is a
time when traffic is stopped.
You can enable the debounce timer for each interface and specify the delay time in milliseconds.
Caution When you enable the port debounce timer the link up and link down detections are delayed, resulting in
a loss of traffic during the debounce period. This situation might affect the convergence and
reconvergence of some protocols.

About MTU Configuration

A per-physical Ethernet interface maximum transmission unit (MTU) is not supported. Instead, MTU is
set according to the QoS classes. You modify MTU by setting Policy and Class maps. See
"Configuring QoS"
When you show the interface settings, an MTU of 1500 is displayed for physical Ethernet interfaces and
a receive data field size of 2112 is displayed for Fibre Channel interfaces.
Configuring Ethernet Interfaces
This section shows how to configure Ethernet interfaces. It includes the following topics:
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Configuring the UDLD Mode

You can configure normal or aggressive unidirectional link detection (UDLD) modes for Ethernet
interfaces on devices configured to run UDLD. Before you can enable a UDLD mode for an interface,
you must make sure that UDLD is already enabled on the device that includes the interface. UDLD must
also be enabled on the other linked interface and its device.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
1-4
for more details.
Configuring the UDLD Mode, page 1-4
Configuring Interface Speed, page 1-5
Configuring the CDP Parameter, page 1-6
Configuring the Debounce Timer, page 1-7
Configuring the Description Parameter, page 1-7
Disabling and Restarting Ethernet Interfaces, page 1-8
Chapter 1 Configuring Ethernet Interfaces
Chapter 1,
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