Cisco Catalyst 3650 Installation manual

Layer 2/3 Command Reference, Cisco IOS XE Release 3.6E (Catalyst
3650 Switch)
First Published: June 27, 2014
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Text Part Number: OL-32639-01

©2014 Cisco Systems, Inc. All rights reserved.

CONTENTS
CHAPTER 1 Preface 1
Document Conventions 1
Related Documentation 3
Obtaining Documentation and Submitting a Service Request 3
CHAPTER 2 Using the Command-Line Interface 5
Information About Using the Command-Line Interface 5
Command Modes 5
Understanding Abbreviated Commands 7
No and Default Forms of Commands 7
CLI Error Messages 8
Configuration Logging 8
Using the Help System 8
How to Use the CLI to Configure Features 10
Configuring the Command History 10
Changing the Command History Buffer Size 10
Recalling Commands 10
Disabling the Command History Feature 11
Enabling and Disabling Editing Features 11
Editing Commands Through Keystrokes 13
Editing Command Lines That Wrap 14
Searching and Filtering Output of show and more Commands 15
Accessing the CLI on a Switch Stack 16
Accessing the CLI Through a Console Connection or Through Telnet 16
CHAPTER 3 Layer 2/3 Commands 17
channel-group 19
channel-protocol 22
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clear lacp 24
clear pagp 25
clear spanning-tree counters 26
clear spanning-tree detected-protocols 27
debug etherchannel 29
debug lacp 31
debug pagp 32
debug platform pm 34
debug platform udld 36
debug spanning-tree 37
interface port-channel 39
lacp max-bundle 41
lacp port-priority 42
lacp system-priority 44
pagp learn-method 46
pagp port-priority 48
port-channel load-balance 50
port-channel load-balance extended 52
port-channel min-links 54
show etherchannel 56
show lacp 59
show pagp 64
show platform etherchannel 66
show platform pm 67
show udld 68
switchport 72
switchport access vlan 74
switchport mode 75
switchport nonegotiate 78
udld 80
udld port 82
udld reset 84
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Contents

Preface
•Document Conventions, page 1
•Related Documentation, page 3
•Obtaining Documentation and Submitting a Service Request, page 3
Document Conventions
This document uses the following conventions:
DescriptionConvention
Both the ^symbol and Ctrl represent the Control (Ctrl) key on a keyboard. For
example, the key combination ^D or Ctrl-D means that you hold down the Control
key while you press the D key. (Keys are indicated in capital letters but are not
case sensitive.)
^ or Ctrl
Commands and keywords and user-entered text appear in bold font.bold font
Document titles, new or emphasized terms, and arguments for which you supply
values are in italic font.
Italic font
Terminal sessions and information the system displays appear in courier font.Courier font
Bold Courier font indicates text that the user must enter.Bold Courier font
Elements in square brackets are optional.[x]
An ellipsis (three consecutive nonbolded periods without spaces) after a syntax
element indicates that the element can be repeated.
...
A vertical line, called a pipe, indicates a choice within a set of keywords or
arguments.
|
Optional alternative keywords are grouped in brackets and separated by vertical
bars.
[x | y]
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DescriptionConvention
Required alternative keywords are grouped in braces and separated by vertical
bars.
{x | y}
Nested set of square brackets or braces indicate optional or required choices
within optional or required elements. Braces and a vertical bar within square
brackets indicate a required choice within an optional element.
[x {y | z}]
A nonquoted set of characters. Do not use quotation marks around the string or
the string will include the quotation marks.
string
Nonprinting characters such as passwords are in angle brackets.< >
Default responses to system prompts are in square brackets.[ ]
An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.
!, #
Reader Alert Conventions
This document may use the following conventions for reader alerts:
Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Note
Means the following information will help you solve a problem.
Tip
Means reader be careful. In this situation, you might do something that could result in equipment damage
or loss of data.
Caution
Means the described action saves time. You can save time by performing the action described in the
paragraph.
Timesaver
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents. Use the statement number provided at the end of each warning
to locate its translation in the translated safety warnings that accompanied this device. Statement 1071
SAVE THESE INSTRUCTIONS
Warning
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Preface
Document Conventions

Related Documentation
Before installing or upgrading the switch, refer to the switch release notes.Note
•Cisco Catalyst 3650 Switch documentation, located at:
http://www.cisco.com/go/cat3650_docs
•Cisco SFP and SFP+ modules documentation, including compatibility matrixes, located at:
http://www.cisco.com/en/US/products/hw/modules/ps5455/tsd_products_support_series_home.html
•Error Message Decoder, located at:
https://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information,
see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco
technical documentation, at:
http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS version 2.0.
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Preface
Related Documentation

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Preface
Obtaining Documentation and Submitting a Service Request

Using the Command-Line Interface
•Information About Using the Command-Line Interface, page 5
•How to Use the CLI to Configure Features, page 10
Information About Using the Command-Line Interface
Command Modes
The Cisco IOS user interface is divided into many different modes. The commands available to you depend
on which mode you are currently in. Enter a question mark (?) at the system prompt to obtain a list of commands
available for each command mode.
You can start a CLI session through a console connection, through Telnet, a SSH, or by using the browser.
When you start a session, you begin in user mode, often called user EXEC mode. Only a limited subset of
the commands are available in user EXEC mode. For example, most of the user EXEC commands are one-time
commands, such as show commands, which show the current configuration status, and clear commands,
which clear counters or interfaces. The user EXEC commands are not saved when the switch reboots.
To have access to all commands, you must enter privileged EXEC mode. Normally, you must enter a password
to enter privileged EXEC mode. From this mode, you can enter any privileged EXEC command or enter
global configuration mode.
Using the configuration modes (global, interface, and line), you can make changes to the running configuration.
If you save the configuration, these commands are stored and used when the switch reboots. To access the
various configuration modes, you must start at global configuration mode. From global configuration mode,
you can enter interface configuration mode and line configuration mode.
This table describes the main command modes, how to access each one, the prompt you see in that mode, and
how to exit the mode.
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Table 1: Command Mode Summary
About This ModeExit MethodPromptAccess MethodMode
Use this mode to
•Change
terminal
settings.
•Perform basic
tests.
•Display system
information.
Enter logout or
quit.
Switch>
Begin a session
using Telnet, SSH,
or console.
User EXEC
Use this mode to
verify commands
that you have
entered. Use a
password to protect
access to this mode.
Enter disable
to exit.
Switch#
While in user
EXEC mode, enter
the enable
command.
Privileged EXEC
Use this mode to
configure parameters
that apply to the
entire switch.
To exit to
privileged
EXEC mode,
enter exit or
end, or press
Ctrl-Z.
Switch(config)#
While in privileged
EXEC mode, enter
the configure
command.
Global
configuration
Use this mode to
configure VLAN
parameters. When
VTP mode is
transparent, you can
create
extended-range
VLANs (VLAN IDs
greater than 1005)
and save
configurations in the
switch startup
configuration file.
To exit to
global
configuration
mode, enter the
exit command.
To return to
privileged
EXEC mode,
press Ctrl-Z or
enter end.
Switch(config-vlan)#
While in global
configuration
mode, enter the
vlan vlan-id
command.
VLAN
configuration
Use this mode to
configure parameters
for the Ethernet
ports.
Switch(config-if)#
While in global
configuration
mode, enter the
interface command
(with a specific
interface).
Interface
configuration
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Using the Command-Line Interface
Command Modes