H3C S9500E Series Interface Configuration Manual

Brand: H3C

Model: S9500E Series

Type: Interface Configuration Manual

H3C S9500E Series Routing Switches

Interface Configuration Guide

Hangzhou H3C Technologies Co., Ltd.

http://www.h3c.com

Software version: S9500E-CMW520-R1828P04

Document version: 6W182-20140823

No part of this manual may be reproduced or transmitted in any form or by any means without prior

written consent of Hangzhou H3C Technologies Co., Ltd.

Trademarks

H3C, , H3CS, H3CIE, H3CNE, Aolynk, , H

Care, , IRF, NetPilot, Netflow,

SecEngine, SecPath, SecCenter, SecBlade, Comware, ITCMM and HUASAN are trademarks of

Hangzhou H3C Technologies Co., Ltd.

All other trademarks that may be mentioned in this manual are the property of their respective owners

Notice

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Preface

The H3C S9500E documentation set includes 14 configuration guides, which describe the software

features for the H3C S9500E Series Routing Switches and guide you through the software configuration

procedures. These configuration guides also provide configuration examples to help you apply software

features to different network scenarios.

The Interface Configuration Guide describes the configuration of Ethernet, POS, loopback, and null

interfaces.

This preface includes:

• Audience

• Conventions

• About the H3C S9500E documentation set

• Obtaining documentation

• Technical support

• Documentation feedback

Audience

This documentation is intended for:

• Network planners

• Field technical support and servicing engineers

• Network administrators working with the S9500E series

Conventions

This section describes the conventions used in this documentation set.

Command conventions

Convention Descri

tion

Boldface Bold text represents commands and keywords that you enter literally as shown.

Italic Italic text represents arguments that you replace with actual values.

[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.

{ x | y | ... }

Braces enclose a set of required syntax choices separated by vertical bars, from which

you select one.

[ x | y | ... ]

Square brackets enclose a set of optional syntax choices separated by vertical bars, from

which you select one or none.

{ x | y | ... } *

Asterisk marked braces enclose a set of required syntax choices separated by vertical

bars, from which you select at least one.

[ x | y | ... ] *

Asterisk marked square brackets enclose optional syntax choices separated by vertical

Convention Descri

tion

bars, from which you select one choice, multiple choices, or none.

&<1-n>

The argument or keyword and argument combination before the ampersand (&) sign can

be entered 1 to n times.

# A line that starts with a pound (#) sign is comments.

GUI conventions

Convention Descri

tion

Boldface

Window names, button names, field names, and menu items are in Boldface. For

example, the New User window appears; click OK.

> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.

Symbols

Convention Descri

tion

WARNING

An alert that calls attention to important information that if not understood or followed can

result in personal injury.

CAUTION

An alert that calls attention to important information that if not understood or followed can

result in data loss, data corruption, or damage to hardware or software.

IMPORTANT

An alert that calls attention to essential information.

NOTE

An alert that contains additional or supplementary information.

TIP

An alert that provides helpful information.

Network topology icons

Represents a generic network device, such as a router, switch, or firewall.

Represents a routing-capable device, such as a router or Layer 3 switch.

Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports

Layer 2 forwarding and other Layer 2 features.

Represents an access controller, a unified wired-WLAN module, or the access controller

engine on a unified wired-WLAN switch.

Represents an access point.

Represents a mesh access point.

Represents omnidirectional signals.

Represents directional signals.



Represents a security product, such as a firewall, UTM, multiservice security gateway, or

load-balancing device.

Represents a security card, such as a firewall, load-balancing, NetStream, SSL VPN, IPS,

or ACG card.

Port numbering in examples

The port numbers in this document are for illustration only and might be unavailable on your device.

About the H3C S9500E documentation set

The H3C S9500E documentation set includes:

Cate

Documents

Pur

oses

Product description and

specifications

Marketing brochures

Describe product specifications and benefits.

Technology white papers

Provide an in-depth description of software features

and technologies.

Card datasheets

Describe card specifications, features, and

standards.

Hardware specifications

and installation

Regulatory compliance

and safety information

Provides regulatory information and the safety

instructions that must be followed during installation.

Installation guide

Provides a complete guide to hardware installation

and hardware specifications.

H3C Pluggable SFP

[SFP+][XFP] Transceiver

Modules Installation

Guide

Guides you through installing SFP/SFP+/XFP

transceiver modules.

Adjustable Slider Rail

Installation Guide

Guides you through installing adjustable slider rails

to a rack.

H3C Transceiver Modules

User Guide

Describes transceiver modules available for the H3C

high-end network products, their external views, and

specifications.

Software configuration

Configuration guides

Describe software features and configuration

procedures.

Command references

Provide a quick reference to all available

commands.

Operations and

maintenance

System log messages

Explains the system log messages.

Trap messages Explains the trap messages.

MIB Companion Describes the MIBs for the software release.

Release notes

Provide information about the product release,

including the version history, hardware and software

compatibility matrix, version upgrade information,

technical support information, and software

upgrading.



Obtaining documentation

Access the most up-to-date H3C product documentation on the World Wide Web

at http://www.h3c.com

Click the links on the top navigation bar to obtain different categories of product documentation:

[Technical Support & Documents > Technical Documents]

—Provides hardware installation, software

upgrading, and software feature configuration and maintenance documentation.

[Products & Solutions]

—Provides information about products and technologies, as well as solutions.

[Technical Support & Documents > Software Download]

—Provides the documentation released with the

software version.

Technical support

servi[email protected]

http://www.h3c.com

Documentation feedback

You can e-mail your comments about product documentation to info@h3c.com.

We appreciate your comments.

Contents

Bulk configuring interfaces ·········································································································································· 1

Configuration guidelines ·················································································································································· 1

Configuration procedure ·················································································································································· 1

Configuring Ethernet interfaces ··································································································································· 3

Ethernet interface types ···················································································································································· 3

Configuring general Ethernet interfaces and subinterfaces ·························································································· 3

Ethernet interface numbering conventions ············································································································· 3

Ethernet interface configuration task list ················································································································ 4

Configuring a combo interface ······························································································································· 4

Configuring the operating mode for a 10-GE interface ······················································································· 5

Switching the link mode of an Ethernet interface between Layer 2 and Layer 3 ·············································· 6

Configuring basic settings of an Ethernet interface or subinterface ··································································· 7

Bringing up Ethernet interfaces and subinterfaces ································································································ 8

Configuring flow control on an Ethernet interface ································································································ 9

Setting the statistics polling interval on an Ethernet interface ·············································································· 9

Configuring physical state change suppression on an Ethernet interface ······················································· 10

Configuring loopback testing on an Ethernet interface ····················································································· 11

Configuring Layer 2 Ethernet interfaces ······················································································································ 11

Layer 2 Ethernet interface configuration task list ······························································································· 11

Configuring a manual port group ······················································································································· 12

Setting speed options for auto negotiation on an Ethernet interface ······························································· 12

Configuring storm suppression for an Ethernet interface ·················································································· 14

Configuring jumbo frame support ······················································································································· 14

Setting the MDI mode of an Ethernet interface ·································································································· 15

Forcibly bringing up an Ethernet interface ········································································································· 16

Configuring the connection mode of an Ethernet interface ·············································································· 17

Configuring Layer 3 Ethernet interface and subinterfaces ························································································· 17

Setting the MTU for an Ethernet interface or subinterface ················································································ 17

Displaying and maintaining Ethernet interfaces ········································································································· 18

Configuring POS interfaces ······································································································································· 19

Overview ········································································································································································· 19

SONET···································································································································································· 19

SDH ········································································································································································· 19

POS ········································································································································································· 19

Displaying and maintaining POS interfaces ··············································································································· 21

POS interface configuration examples ························································································································ 22

Directly connecting switches through POS interfaces ························································································ 22

Connecting switches through POS interfaces across frame relay ···································································· 22

Troubleshooting POS interfaces ···································································································································· 24

Configuring loopback and null interfaces ················································································································ 25

Configuring a loopback interface ································································································································ 25

Introduction ···························································································································································· 25

Configuring a null interface ·········································································································································· 26

Displaying and maintaining loopback and null interfaces ························································································ 27

Index ··········································································································································································· 28

Bulk configuring interfaces

You can enter interface range view to bulk configure multiple interfaces with the same feature instead of

configuring them one by one. For example, you can perform the shutdown command in interface range

view to shut down a range of interfaces.

Failure of applying a command on one member interface does not affect the application of the command

on the other member interfaces. If applying a command on one member interface fails, the system

displays an error message and continues with the next member interface.

Configuration guidelines

When you bulk configure interfaces in interface range view, follow these restrictions and guidelines:

• In interface range view, only the commands supported by the first interface are available.

• Do not assign an aggregate interface and any of its member interfaces to an interface range at the

same time. Some commands, after being executed on both an aggregate interface and its member

interfaces, can break up the aggregation.

• No limit is set on the maximum number of interfaces in an interface range. The more interfaces in

an interface range, the longer the command execution time.

• The maximum number of interface range names is only limited by the system resources. To

guarantee bulk interface configuration performance, configure interface range names fewer than

1000.

Configuration procedure

To bulk configure interfaces:

Step Command Remarks

1. Enter system view.

system-view

N/A

2. Enter interface range

view.

• Method 1:

interface range { interface-type

interface-number [ to interface-type

interface-number ] } &<1-5>

• Method 2:

interface range name name

[ interface { interface-type

interface-number [ to interface-type

interface-number ] } &<1-5> ]

Use either method.

By using method 2, you assign a name

to an interface range and can specify

this name rather than the interface

range to enter the interface range view.

3. Display commands

available for the first

interface in the

interface range.

Enter ? at the interface range prompt. Optional.

Step Command Remarks

4. Perform available

commands to

configure the

interfaces.

Available commands vary by interface.

N/A

5. Verify the

configuration.

display this Optional.

Configuring Ethernet interfaces

Ethernet interface types

Ethernet is the most widespread wired LAN technology due to its flexibility, simplicity, and easy

implementation. Your device supports the following types of Ethernet interfaces:

• Layer 2 Ethernet interfaces—Physical Ethernet interfaces operating at the data link layer (Layer 2)

to switch traffic.

• Layer 3 Ethernet interfaces—Physical Ethernet interfaces operating at the network layer (Layer 3) to

route traffic. You can assign an IP address to a Layer 3 Ethernet interface.

• Layer-configurable Ethernet interfaces—Physical Ethernet interfaces that can be configured to

operate in bridge mode as Layer 2 Ethernet interfaces or in route mode as Layer 3 Ethernet

interfaces.

• Layer 3 Ethernet subinterfaces—Logical interfaces operating at the network layer. You can assign

an IP address to a Layer 3 Ethernet subinterface. By creating subinterfaces on a Layer 3 Ethernet

interface, you enable the interface to carry packets for multiple VLANs.

The switch does not support Layer 3 Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3

aggregate interfaces, and Layer 3 aggregate subinterfaces when it is operating in standard mode. For

more information about system operating modes, see Fundamentals Configuration Guide. For more

information about the models of the Ethernet interface cards, see the installation guide.

On a switch operating in IRF mode and enabled with enhanced IRF mode, you cannot create Layer 3

Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3 aggregate interfaces, or Layer 3 aggregate

subinterfaces.

Configuring general Ethernet interfaces and

subinterfaces

By default, Ethernet interfaces, VLAN interfaces, and aggregate interfaces are in DOWN state. Before

configuring these interfaces, use the undo shutdown command to bring them up.

Ethernet interface numbering conventions

When the switch operates in standalone mode, an Ethernet interface is numbered in the format of

interface type A/B/C, where:

• A is the slot number of the card where the Ethernet interface resides.

• B is the number of the sub-card where the Ethernet interface resides.

If the card does not have any sub-card, B is fixed at 0.

• C is the interface number.

When the switch operates in IRF mode, an Ethernet interface is numbered in the format of interface type

A/B/C/D, where:

• A is the ID of the IRF member switch where the Ethernet interface resides.

A can be 1 or 2.

• B is the slot number of the card where the Ethernet interface resides.

• C is the number of the sub-card where the Ethernet interface resides.

If the card does not have any sub-card, C is fixed at 0.

• D is the interface number.

Ethernet interface configuration task list

Task Remarks

Configuring a combo interface Optional.

Configuring the operating mode for a 10-GE interface Optional.

Switching the link mode of an Ethernet interface between Layer 2 and Layer 3 Optional.

Configuring basic settings of an Ethernet interface or subinterface Optional.

Bringing up Ethernet interfaces and subinterfaces Optional.

Configuring flow control on an Ethernet interface Optional.

Setting the statistics polling interval on an Ethernet interface Optional.

Configuring physical state change suppression on an Ethernet interface Optional.

Configuring loopback testing on an Ethernet interface Optional.

Configuring a combo interface

CAUTION:

• When you activate the fiber port of a combo interface, the switch removes the current port settings (such

as rate, duplex mode, and MDI), if the fiber port does not support them.

• You cannot bind a combo interface with an IRF port. For more information about IRF, see

IRF

Configuration Guide

A combo interface is a logical interface that comprises one optical (fiber) port and one electrical (copper)

port. The two ports share one forwarding channel, so they cannot work simultaneously. When you

enable one port, the other port is automatically disabled.

The fiber and copper ports of a combo interface share one interface view, in which you activate the fiber

or copper port, and configure other port attributes, such as the interface rate and duplex mode.

Configuration prerequisites

Before configuring a combo interface:

• Determine the combo interfaces on your device by checking the product specifications and identify

the two physical interfaces that compose each combo interface.

• Identify which port of the interface is active by using the display interface command. If the output

includes "Media type is twisted pair, Port hardware type is 1000_BASE_T," the copper port is

active. If the output includes "Media type is not sure, Port hardware type is No connector," the fiber

interface is active.

Changing the active port of a combo interface

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Activate the copper or fiber

port of the combo interface.

combo enable { copper | fiber }

Optional.

By default, the copper port is

active.

Configuring the operating mode for a 10-GE interface

Introduction to the operating modes

A ten-GigabitEthernet (10-GE) interface operates in LAN or WAN mode:

• In LAN mode, the 10-GE interface transmits Ethernet packets, providing access to an Ethernet

network.

• In WAN mode, the 10-GE interface transmits synchronous digital hierarchy (SDH) packets,

providing access to an SDH network. In this mode, the interface supports only point-to-point

connections.

NOTE:

10-GE interface operating in WAN mode cannot communicate with a 10G POS interface. Both kinds

of interfaces encapsulate packets as SDH frames, but the SDH frames have incompatible formats.

Introduction to the J0 and J1 overhead bytes

SDH frames have diversified overhead bytes, which perform the operation and maintenance functions

such as hierarchical management of the transport network. J0 and J1 are used to provide internetworking

support between different countries, regions, or network devices of different manufacturers.

The regenerator section trace byte J0 is usually set to a section access point identifier. The sending end

stays connected with the receiving end by sending this byte.

The path trace byte J1, usually set to a high-order path access point identifier, functions in a similar to

keep the connection with the receiving end of the path.

To ensure smooth communication, the J0 and J1 bytes should be matched at the sending and receiving

ends.

Configuration procedure

To configure the operating mode for a 10-GE interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter ten-GigabitEthernet

interface view.

interface ten-gigabitethernet

interface-number

N/A

Step Command Remarks

3. Set the 10-GE interface to

operate in LAN or WAN

mode.

port-mode { lan | wan }

Optional.

By default, a 10-GE interface

operates in LAN mode.

The port-mode command is not

available on a port where

loopback testing is being

performed.

4. Configure the J0 or J1 byte

when the 10-GE interface is

operating in WAN mode.

flag { j0 | j1 } sdh value

Optional.

By default, the value of the J0 and

J1 bytes is 0.

5. Configure the SD or SF

threshold when the 10-GE

interface is operating in

WAN mode.

threshold { sd | sf } value

Optional.

By default, the value of the SD

threshold is 10e-6 (the value

argument is 6),the value of the SF

threshold is 10e-4 (the value

argument is 4).

6. Set the protective action for

alarms when the 10 GE

interface is operating in

WAN mode.

alarm-detect { rdi | sd | sf } action

link-down

Optional.

By default, no protective action for

alarms is configured.

IMPORTANT:

The flag, threshold, and alarm-detect commands are available only when the 10-GE interface is

operating in WAN mode.

Switching the link mode of an Ethernet interface between Layer

2 and Layer 3

CAUTION:

• The switch supports this command when the operating mode is not the standard mode. The switch

operates in standard mode by default. For more information about system operating modes, see

Fundamentals Configuration Guide

• After you chan

e the operatin

mode of an Ethernet interface, all the settin

s of the Ethernet interface

will restore to the default configuration in the new mode.

• The Ethernet interface link mode can be configured in either the system view or the Ethernet view and

when the two link modes are different, the one configured last takes effect.

• You cannot configure Layer 3 Ethernet interfaces as physical IRF ports.

Depending on the layer at which the switch processes received data packets, Ethernet interfaces on the

switch can operate either as Layer 2 Ethernet interfaces (in bridge mode), or as Layer 3 Ethernet

interfaces (in route mode). You can set the link mode of an Ethernet interface to bridge or route.

To change the link mode of an Ethernet interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Change the link mode of

Ethernet interfaces.

• (Method 1) In system view:

port link-mode { bridge | route }

interface-list

• (Method 2) In Ethernet interface

view:

a. interface interface-type

interface-number

b. port link-mode { bridge |

route }

Use either method.

By default, Ethernet interfaces

operate in bridge mode.

Configuring basic settings of an Ethernet interface or

subinterface

Configuring an Ethernet interface

CAUTION:

Because a 1000-Mbps interface cannot operate in half duplex mode, you cannot use the duplex half

command together with the following commands: speed 1000 and speed auto 1000 [ 10 | 100 ] *.

You can set an Ethernet interface to operate in one of the following duplex modes:

• Full-duplex mode (full)—Interfaces operating in this mode can send and receive packets

simultaneously.

• Half-duplex mode (half)—Interfaces operating in this mode can either send or receive packets at a

given time.

• Auto-negotiation mode (auto)—Interfaces operating in this mode determine a duplex mode

through auto-negotiation.

You can set the speed of an Ethernet interface or enable it to automatically negotiate a speed with its

peer. For auto-negotiation, you can also set speed options. The two ends can pick a speed only from the

options. For a 100-Mbps or 1000-Mbps Layer 2 Ethernet interface, you can also set speed options for

auto negotiation. The two ends can pick a speed only from the available options. For more information,

see "Setting speed options for auto negotiation on an Ethernet interface."

To configure basic Ethernet interface settings:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Set the descriptive information

for the Ethernet interface.

description text

Optional.

By default, the descriptive

information is "interface name +

Interface."

Step Command Remarks

4. Set the duplex mode.

duplex { auto | full | half }

Optional.

The default setting is auto.

A fiber port does not support half

keyword.

10-GE interfaces do not support

this command.

5. Set the transmission rate.

speed { 10 | 100 | 1000 | auto }

Optional.

The default setting is auto.

6. Restore the default settings.

default Optional.

7. Set the intended bandwidth.

bandwidth bandwidth-value Optional.

Configuring an Ethernet subinterface

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Configure the interface to

operate in Layer 3 mode.

port link-mode route

By default, an Ethernet interface

operates in Layer 2 mode.

4. Return to system view.

quit N/A

5. Create an Ethernet

subinterface.

interface interface-type

interface-number.subnumber

This command also leads you to

Ethernet subinterface view.

6. Set the interface description.

description text

Optional.

By default, the description of an

interface is in the format of

interface-name Interface. For

example, GigabitEthernet3/0/2.1

Interface.

7. Restore the default settings.

default Optional.

NOTE:

For the local and remote Ethernet subinterfaces to transmit traffic correctly, confi

ure them with the same

subinterface number and VLAN ID.

You can configure IP-related settings on an Ethernet subinterface. For more information, see Layer 3—IP

Services Configuration Guide.

Bringing up Ethernet interfaces and subinterfaces

You can use the commands in this section to bring up a single Ethernet interface in Ethernet interface view,

or to bring up multiple Ethernet interfaces in port group view.

To bring up Ethernet interfaces:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface or

subinterface view, or port

group view.

• Enter Ethernet interface

view:

interface interface-type

interface-number

• Enter Ethernet

subinterface view:

interface interface-type

interface-number.subnum

ber

• Enter port group view:

port-group manual

port-group-name

Use any command.

To shut down an Ethernet interface or

subinterface, enter Ethernet interface or

subinterface view. To shut down all

Ethernet interfaces in a port group, enter

port group view.

You can enter Ethernet subinterface

view only when the Ethernet interface

operates in Layer 3 mode.

3. Bring up Ethernet interfaces.

undo shutdown

Optional.

By default, Ethernet interfaces are in

DOWN state.

Configuring flow control on an Ethernet interface

You can avoid packet drops on a link by enabling flow control at both ends of the link. When traffic

congestion occurs at the receiving end, the receiving end sends a Pause frame to notify the sending end

to suspend sending packets.

To enable flow control on an Ethernet interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Enable flow control.

flow-control By default, flow control is disabled.

Setting the statistics polling interval on an Ethernet interface

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Set the statistics polling

interval.

flow-interval interval

The default interface statistics

polling interval is 300 seconds.

To display the interface statistics collected in the last polling interval, use the display interface command.

Configuring physical state change suppression on an Ethernet

interface

The physical link state of an Ethernet interface is either up or down. Each time the physical link of a port

goes up or comes down, the system immediately reports the change to the upper-layer protocol modules

(such as routing and forwarding modules) for packet transmission, and automatically generates traps

and logs, informing the user to take corresponding actions.

To prevent frequent physical link flapping from affecting system performance, configure physical state

change suppression to suppress the reporting of physical link state changes. The system reports a

physical layer change unless the physical layer state change is not recovered when the suppression

interval expires. If you want to obtain physical layer changes within the suppression interval, enable the

damping function with the link-delay enable trap updown command on the port. When the link-delay

enable trap updown command is configured on an interface, the interface does not report link layer state

changes to upper layer modules, but it generates traps and logs to inform the user to take corresponding

actions.

To configure physical state change suppression on an Ethernet interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Configure the physical state

change suppression interval.

link-delay delay-time

By default, the physical state

change suppression interval on an

Ethernet interface is 1 second.

When the link-delay delay-time

command is configured, the

link-down or link-up event is not

reported to the CPU unless the

interface is still down or up when

the suppression interval

(delay-time) expires.

4. Configure the link-up event

suppression interval.

link-delay delay-time mode up

By default, the physical state

change suppression interval on an

Ethernet interface is 1 second.

When the link-delay delay-time

mode up command is configured:

• The link-up event is not reported

to the CPU unless the interface

is still up when the suppression

interval (delay-time) expires.

• The link-down event is

immediately reported.

5. Enable the damping function

on the port.

link-delay enable trap updown

Optional.

By default, the damping function is

disabled on a port.

Configuring loopback testing on an Ethernet interface

If an Ethernet interface does not operate correctly, you can enable loopback testing on it to identify the

problem.

If an Ethernet interface is in a loopback test, it does not forward data traffic.

Configuration restrictions and guidelines

• The loopback external configuration command is available only on the Ethernet interface that

supports 10-G XFP transceiver modules.

• Internal loopback testing can be enabled on interfaces in DOWN state, but not on those

administratively shut down.

• The speed, duplex, port-mode, mdi, combo enable, and shutdown commands are not available

during a loopback testing.

• During loopback testing, an Ethernet interface operates at its highest speed in full duplex mode.

When you disable loopback testing, the rate and duplex mode of the interface restore.

Configuration procedure

To enable loopback testing on an Ethernet interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Bring up the interface.

undo shutdown N/A

4. Enable loopback testing.

loopback { external | internal }

Optional.

By default, loopback testing is

disabled.

Configuring Layer 2 Ethernet interfaces

Layer 2 Ethernet interface configuration task list

Task Remarks

Configuring a manual port group

Optional

Applicable to Layer 2 Ethernet interfaces

Setting speed options for auto negotiation on an

Ethernet interface

Optional

Applicable to 100-Mbps or 1000-Mbps Layer 2

Ethernet interfaces

Configuring storm suppression for an Ethernet

interface

Optional

Applicable to Layer 2 Ethernet interfaces

Configuring jumbo frame support

Optional

Applicable to Layer 2 Ethernet interfaces

Task Remarks

Setting the MDI mode of an Ethernet interface

Optional

Applicable to Layer 2 Ethernet interfaces

Forcibly bringing up an Ethernet interface

Optional

Applicable to Layer 2 Ethernet interfaces

Configuring the connection mode of an Ethernet

interface

Optional

Applicable to Layer 2 Ethernet interfaces

Configuring a manual port group

Some interfaces on your device might use the same set of settings. To configure these interfaces in bulk

rather than one by one, you can assign them to a port group.

You create port groups manually. All settings made for a port group apply to all the member ports of the

group. For example, you can configure a traffic suppression threshold (see Configuring storm

suppr

ession for an Ethernet interface) for multiple interfaces in bulk by assigning these interfaces to a port

group.

Even though the settings are made on the port group, they are saved on an interface basis rather than on

a port group basis. You can only view the settings in the view of each interface by use the display

current-configuration or display this command.

To configure a manual port group:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Create a manual port group

and enter manual port group

view.

port-group manual

port-group-name

By default, no manual port group is

created.

3. Assign Ethernet interfaces to

the manual port group.

group-member interface-list

By default, no Ethernet interface is

in any manual port group.

Setting speed options for auto negotiation on an Ethernet

interface

Speed auto negotiation enables an Ethernet interface to negotiate with its peer for the highest speed

supported by both ends by default. If the highest speed is not desirable, you can narrow down the speed

option list for negotiation.

Page is loading ...

H3C S9500E Series Interface Configuration Manual

H3C S9500E Series Interface Configuration Manual

H3C S9500E Series Interface Configuration Manual

Related papers

Other documents