About Mtu Configuration; Configuring Ethernet Interfaces; Configuring The Udld Mode - Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual
Cisco nexus 5000 series switch cli software configuration guide, nx-os 4.0(1a)n1 (ol-16597-01, january 2009)
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Chapter 5
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
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.
To use the normal UDLD mode, you must configure one of the ports for normal mode and configure the
other port for the normal or aggressive mode. To use the aggressive UDLD mode, you must configure
both ports for the aggressive mode.
Note
Before you begin, UDLD must be enabled for the other linked port and its device.
To configure the UDLD mode, perform this task:
Command
Step 1
switch# configure terminal
Step 2
switch(config)# feature udld
switch(config)# no feature udld
OL-16597-01
for more details.
Configuring the UDLD Mode, page 5-5
Configuring Interface Speed, page 5-6
Configuring the Cisco Discovery Protocol, page 5-7
Configuring the Debounce Timer, page 5-8
Configuring the Description Parameter, page 5-9
Disabling and Restarting Ethernet Interfaces, page 5-9
Purpose
Enters configuration mode.
Enables UDLD for the device.
Disables UDLD for the device.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Configuring Ethernet Interfaces
Chapter 31,
5-5
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