h3c wx3000 series unified switches switching engine configuration guide-6w103-basic port...

8/10/2019 H3C WX3000 Series Unified Switches Switching Engine Configuration Guide-6W103-Basic Port Configuration

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Table of Contents

1 Basic Port Configuration 1-1

Ethernet Port Overview1-1

Types and Numbers of Ethernet Ports1-1

Combo Ports Mapping Relations1-1

Link Types of Ethernet Ports 1-2

Configuring the Default VLAN ID for an Ethernet Port1-2

Adding an Ethernet Port to Specified VLANs1-3

Configuring Ethernet Ports1-3

Making Basic Port Configuration1-3

Configuring Port Auto-Negotiation Speed1-4

Setting the Ethernet Port Broadcast Suppression Ratio 1-5

Enabling Flow Control on a Port1-5

Configuring Access Port Attribute 1-6

Configuring Hybrid Port Attribute1-6

Configuring Trunk Port Attribute1-6

Disabling Up/Down Log Output on a Port 1-7

Copying Port Configuration to Other Ports1-8

Configuring a Port Group1-8

Setting Loopback Detection for an Ethernet Port1-9

Configuring the Ethernet Port to Run Loopback Test 1-10

Enabling the System to Test Connected Cable 1-10

Configuring the Interval to Perform Statistical Analysis on Port Traffic1-11

Displaying and Maintaining Ethernet Ports 1-11

Ethernet Port Configuration Example 1-12

Troubleshooting Ethernet Port Configuration 1-12


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1 Basic Port Configuration

The term switch used throughout this chapter refers to a switching device in a generic sense or the

switching engine of a unified switch in the WX3000 series.

The sample output information in this manual was created on the WX3024. The output information

on your device may vary.

Ethernet Port Overview

Types and Numbers of Ethernet Ports

Table 1-1lists the types and numbers of the Ethernet ports available on the WX3000 series devices.

Table 1-1 Description of Ethernet port type and port number

Series10/100/1000Base-T autosensing Ethernet

ports1000Base-X SFP ports Extension slots

WX3024 24 4 2

WX3010 8 2 None

WX3008 8 None None

Combo Ports Mapping Relations

An SFP port and its corresponding 10/100/1000Base-T autosensing Ethernet port form a Combo port.

That is, only one of the two ports forming the Combo port can be used at a time. Table 1-2shows the

mapping relations between the ports forming the Combo port.

Table 1-2 Mapping relations between the ports forming the Combo port

Series 1000Base-X SFP port10/100/1000Base-T autosensing Ethernet

port

GigabitEthernet 1/0/25 GigabitEthernet 1/0/22


GigabitEthernet 1/0/27 GigabitEthernet 1/0/21WX3024



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Link Types of Ethernet Ports

An Ethernet port of the device can operate in one of the following three link types:

Access: An access port can belong to only one VLAN, and is generally used to connect user PCs.

Trunk: A trunk port can belong to more than one VLAN. It can receive/send packets from/to multiple

VLANs, and is generally used to connect another device.

Hybrid: A hybrid port can belong to more than one VLAN. It can receive/send packets from/to

multiple VLANs, and can be used to connect either a device or user PC.

A hybrid port allows the packets of multiple VLANs to be sent without tags, but a trunk port only allows

the packets of the default VLAN to be sent without tags.

You can configure all the three types of ports on the same Ethernet switch. However, note that you

cannot directly switch a port between trunk and hybrid and you must set the port as access before the

switching. For example, to change a trunk port to hybrid, you must first set it as access and then hybrid.

Configuring the Default VLAN ID for an Ethernet Port

An access port can belong to only one VLAN. Therefore, the VLAN an access port belongs to is also the

default VLAN of the access port. A hybrid/trunk port can belong to several VLANs, and so a default

VLAN ID for the port is required.

After you configure default VLAN IDs for Ethernet ports, the packets passing through the ports are

processed in different ways depending on different situations:

Table 1-3 Processing of incoming/outgoing packets

Processing o f an incoming packet

Porttype

If the packetdoes not carry a

VLAN tag

If the packet carries a VLANtag

Processing of an outgoing packet

Access

If the VLAN ID is just thedefault VLAN ID, receive

the packet. If the VLAN ID is not the

default VLAN ID, discardthe packet.

Deprive the tag from the packet and send thepacket.

Trunk

Receive the

packet and addthe default tag tothe packet.

If the VLAN ID is just thedefault VLAN ID, receivethe packet.

If the VLAN ID is not thedefault VLAN ID but is one

If the VLAN ID is just the default VLAN ID,deprive the tag and send the packet.

If the VLAN ID is not the default VLAN ID,keep the original tag unchanged and sendthe packet.


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Processing o f an incoming packet

Porttype

If the packetdoes not carry a

VLAN tag

If the packet carries a VLANtag

Processing of an outgoing packet

Hybrid

If the VLAN ID is just the default VLAN ID,deprive the tag and send the packet.

If the VLAN ID is not the default VLAN ID,deprive the tag or keep the tag unchanged(whichever is done is determined by theport hybrid vlan vlan-id-list { tagged |untagged } command) and send thepacket.

To guarantee the proper packet forwarding, the default VLAN ID of the local hybrid port or trunk port

should be identical with that of the hybrid port or trunk port on the peer device.

Adding an Ethernet Port to Specif ied VLANs

You can add the specified Ethernet port to a specified VLAN. After that, the Ethernet port can forward

the packets of the specified VLAN, so that the VLAN on this switch can intercommunicate with the same

VLAN on the peer device.

An access port can only be added to one VLAN, while hybrid and trunk ports can be added to multiple

VLANs.Note that the port shall be added to an existing VLAN.

Configuring Ethernet Ports

Making Basic Port Configuration

Follow these steps to make basic port configuration:

To do Use the command Remarks

Enter system view system-view

Enter Ethernet port viewinterface interface-typeinterface-number

Enable the Ethernet port undo shutdown

By default, the port is enabled.

Use the shutdowncommand todisable the port.

Set the description of the Ethernetport

descriptiontextBy default, no description isdefined for an Ethernet port.

Set the duplex mode of theEthernet port

duplex{auto |full|half}The port defaults to auto(autonegotiation) mode.

Set the rate of the Ethernet port speed{10 |100 |1000 |auto}By default, the speed of the port is

set to automode.


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Set the MDI attribute of theEthernet port

mdi {across |auto |normal }Be default, the MDI attribute of theport is set to automode.

Allow jumbo frames that are notlarger than 4096 bytes to pass

through the Ethernet port

jumboframe enable

Optional

By default, jumbo frames that are

not larger than 4096 bytes areallowed to pass through the port.

For a combo port, only after the optical interface has been configured with the shutdown

command can the electrical interface be used, and vice versa.

The speed and mdi commands are not available on the combo port.

The mdicommand is not available on the Ethernet ports of the expansion interface card.

Configuring Port Auto-Negotiation Speed

You can configure an auto-negotiation speed for a port by using the speed autocommand.

Take a 10/100/1000 Mbps port as an example.

If you expect that 10 Mbps is the only available auto-negotiation speed of the port, you just need to

configure speed auto10.

If you expect that 10 Mbps and 100 Mbps are the available auto-negotiation speeds of the port, you

just need to configure speed auto10 100.

If you expect that 10 Mbps and 1000 Mbps are the available auto-negotiation speeds of the port,

you just need to configure speed auto10 1000.

Follow these steps to configure auto-negotiation speeds for a port:



Enter Ethernet interface viewinterfaceinterface-typeinterface-number

Configure the availableauto-negotiation speed(s) for theport

speed auto[ 10 |100 |1000]*OptionalBy default, the port speed isauto-negotiated.


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Only ports on the front panel of the device support the auto-negotiation speed configuration feature.

And ports on the extended interface card do not support this feature currently.

After you configure auto-negotiation speed(s) for a port, if you execute the undo speedcommandor the speed autocommand, the auto-negotiation speed setting of the port restores to the default

setting.

The effect of executing speed auto 10 100 1000equals to that of executing speed auto, that is,

the port is configured to support all the auto-negotiation speeds: 10 Mbps, 100 Mbps, and 1000

Mbps.

Setting the Ethernet Port Broadcast Suppression Ratio

You can use the broadcast-suppressioncommands to restrict the broadcast traffic allowed to pass

through a port. After that, if the broadcast traffic on the port exceeds the value you set, the system will

maintain an appropriate broadcast traffic ratio by discarding the overflow traffic, so as to suppress

broadcast storm, avoid network congestion and ensure normal network services.

You can execute the broadcast-suppressioncommand in system view or Ethernet port view:

If you execute the command in system view, the command takes effect on all ports.

If you execute the command in Ethernet port view, the command takes effect only on current port.

Follow these steps to set the Ethernet port broadcast suppression ratio:



Set the global broadcastsuppression ratio

broadcast-suppression{ ratio |ppsmax-pps}

By default, the ratio is 100%, that is, thesystem does not suppress broadcasttraffic globally.


Set the broadcastsuppression ratio on currentport

broadcast-suppression{ ratio |ppsmax-pps}

By default, the ratio is 100%, that is, thesystem does not suppress broadcasttraffic on the port.

Enabling Flow Control on a Port

After flow control is enabled on both the local and the peer devices, if congestion occurs on the local

device, the device will inform its peer to suspend packet sending or lower the packet sending rate. In

this way, packet loss is reduced and normal network services are guaranteed.

Follow these steps to enable flow control on a port:



Enter Ethernet port viewinterfaceinterface-typeinterface-number


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Enable flow control on the Ethernetport

flow-control

Required

By default, flow control is notenabled on a port.

Configuring Access Port Attribute

Follow these steps to configure access port attribute:




Configure the link type for the portas access

port link-typeaccessBy default, the link type for the portis access.

Add the current access port intothe specified VLAN

port access vlan vlan-id Optional

Configuring Hybrid Port Attribute

Follow these steps to configure hybrid port attribute:



Enter Ethernet port view interfaceinterface-typeinterface-number

Set the link type for the portas hybrid

port link-typehybrid Required

Set the default VLAN ID forthe hybrid port

port hybrid pvid vlan vlan-id

Optional

By default, the VLAN of a hybrid port isVLAN 1.

Add the current hybrid portinto the specified VLAN

port hybridvlanvlan-id-list{ tagged| untagged}

Optional

For a hybrid port, you can configure totag the packets of specific VLANs,based on which the packets of those

VLANs can be processed in differentlyways.

Configuring Trunk Port Attribute

Follow these steps to configure trunk port attribute:


Enter system view System-view

Enter Ethernet port view

interfaceinterface-type

interface-number


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Set the link type for the port astrunk

port link-typetrunk Required

Set the default VLAN ID for thetrunk port

port trunk pvid vlanvlan-id

Optional

By default, the VLAN of a

trunk port is VLAN 1.Add the current trunk port into thespecified VLAN

port trunk permit vlan{ vlan-id-list|all }

Optional

Disabling Up/Down Log Output on a Port

An Ethernet port has two physical link statuses: UP and Down. When the link status of an Ethernet port

changes, the device sends log information to the log server, which then acts accordingly. If the status of

Ethernet ports changes frequently, the device sends log information to the log server frequently,

burdening the log server and consuming plenty of network resources.To solve this problem, you can disable the Up/Down log output function on some ports, so as to reduce

the quantity of log information output to the log server.

After you allow a port to output the Up/Down log information, if the physical link status of the port does

not change, the device does not send log information to the log server but monitors the port in real time.

Configuration tasks

Follow these steps to disable a port from outputting UP/Down log information:




Disable a port from outputtingUP/Down Log Information

undo enable log updown

Required

By default, a port is allowed to output the

UP/Down log information.

Configuration example

# By default, port GigabitEthernet 1/0/1 is allowed to output the Up/Down log information. Execute the

shutdown command or the undo shutdown command on GigabitEthernet 1/0/1, and the system

outputs Up/Down log information of GigabitEthernet 1/0/1.

sys t em- vi ew

[ devi ce] i nt er f ace Gi gabi t Et her net 1/ 0/ 1

[ devi ce- Gi gabi t Et hernet 1/ 0/ 1] shut down

[ devi ce- Gi gabi t Et her net 1/ 0/ 1]%Apr 2 08: 11: 14: 220 2000 devi ce L2I NF/ 5/ PORT LI NK STATUS CHANGE: - 1 -

Gi gabi t Ether net 1/ 0/ 1 i s DOWN


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[ devi ce- Gi gabi t Ethernet1/ 0/ 1] undo shut down

[ devi ce- Gi gabi t Et her net 1/ 0/ 1]

%Apr 2 08: 11: 32: 253 2000 devi ce L2I NF/ 5/ PORT LI NK STATUS CHANGE: - 1 -

Gi gabi t Et her net 1/ 0/ 1 i s UP

# Disable GigabitEthernet 1/0/1 from outputting Up/Down log information, execute the shutdown

command or the undo shutdowncommand on GigabitEthernet 1/0/1, and no Up/Down log information

is output for GigabitEthernet 1/0/1.

[ devi ce- Gi gabi t Ethernet1/ 0/ 1] undo enabl e l og updown

[ devi ce- Gi gabi t Et hernet 1/ 0/ 1] shut down

[ devi ce- Gi gabi t Ethernet1/ 0/ 1] undo shut down

Copying Port Configuration to Other Ports

To make some other ports have the same configuration as that of a specific port, you can copy the

configuration of the specific port to the ports.

Specifically, the following types of port configuration can be copied from one port to other ports: VLAN

configuration, protocol-based VLAN configuration, LACP configuration, QoS configuration, GARP

configuration, STP configuration and initial port configuration. For the detailed copy content, please

refer to the Command Reference.

Follow these steps to copy port configuration to other ports:



Copy port configuration toother ports

copy configuration source{ interface-typeinterface-number| aggregation-groupsource-agg-id}destination{ interface-list[ aggregation-group

destination-agg-id] | aggregation-groupdestination-agg-id}

Required

If you specify the source aggregation group ID, the system uses the port with the smallest port

number in the aggregation group as the source.

If you specify the destination aggregation ID, the configuration of the source port will be copied to

all ports in the aggregation group.

Configuring a Port Group

To make the configuration task easier for users, certain devices allow users to configure on a single port

as well as on multiple ports in a port group. In port group view, the user only needs to input the

configuration command once on one port and that configuration will apply to all ports in the port group.

This effectively reduces redundant configurations.

A Port group could be manually created by users. Multiple Ethernet ports can be added to the same port

group but one Ethernet port can only be added to one port group.

Follow these steps to configure a port group:


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Create a port group or enter the specified port group view port-groupgroup-id Required

Add an Ethernet port to a specified port group port interface-list Required

A port can not be added to a port group if it has been added to an aggregation group, and vice versa.

Setting Loopback Detection for an Ethernet Port

Loopback detection is used to monitor if loopback occurs on a port.

After you enable loopback detection on Ethernet ports, the device can monitor if external loopback

occurs on them. If there is a loopback port found, the device will put it under control.

If loopback is found on an access port, the system disables the port, sends a Trap message to the

client and removes the corresponding MAC forwarding entry.

If loopback is found on a trunk or hybrid port, the system sends a Trap message to the client. When

the loopback port control function is enabled on these ports, the system disables the port, sends a

Trap message to the client and removes the corresponding MAC forwarding entry.

Follow these steps to set loopback detection for an Ethernet port:



Enable loopback detection globally loopback-detection enable

Required

By default, loopback detection isdisabled globally.

Set time interval for port loopbackdetection

loopback-detectioninterval-timetime

Optional

The default interval is 30 seconds.


Enable loopback detection on aspecified port

loopback-detection enableRequiredBy default, port loopback detection isdisabled.

Enable loopback port control onthe trunk or hybrid port

loopback-detection controlenable

Optional

By default, loopback port control is notenabled.

Configure the system to runloopback detection on all VLANsfor the trunk and hybrid ports

loopback-detectionper-vlan enable

Optional

By default, the system runs loopbackdetection only on the default VLAN forthe trunk and hybrid ports.


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To enable loopback detection on a specific port, you must use the loopback-detection enable

command in both system view and the specific port view.

After you use the undo loopback-detection enablecommand in system view, loopback detectionwill be disabled on all ports.

The commands of loopback detection feature cannot be configured with the commands of port link

aggregation at the same time.

Configuring the Ethernet Port to Run Loopback Test

You can configure the Ethernet port to run loopback test to check if it operates normally. The port

running loopback test cannot forward data packets normally. The loopback test terminatesautomatically after a specific period.

Follow these steps to configure an Ethernet port to run loopback test:



Enter Ethernet port view interface interface-type interface-number

Configure the Ethernet port to run loopbacktest

loopback {external |internal } Required

external:Performs external loop test. In the external loop test, self-loop headers (which are made

from four cores of the 8-core cables) must be used on the ports of the device. The external loop test

can locate the hardware failures on the port.

internal : Performs internal loop test. In the internal loop test, self loop is established in the

switching chip to locate the chip failure which is related to the port.

After you use the shutdown command on a port, the port cannot run loopback test. You cannot use the

speed, duplex, mdiand shutdown commands on the ports running loopback test. Some ports do not

support loopback test, and corresponding prompts will be given when you perform loopback test on

them.

Enabling the System to Test Connected Cable

You can enable the system to test the cable connected to a specific port. The test result will be returned

in five minutes. The system can test these attributes of the cable: Receive and transmit directions (RX

and TX), short circuit/open circuit or not, the length of the faulty cable.

Follow these steps to enable the system to test connected cables:


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Enter Ethernet port view interface interface-type interface-number

Enable the system to testconnected cables

virtual-cable-test Required

Optical port (including Combo optical port) does not support VCT (virtual-cable-test ) function.

Combo electrical port supports VCT function only when it is in UP condition (using undo shutdown

command), normal Ethernet electrical port always supports this function.

Configuring the Interval to Perform Statistical Analysis on Port Traffic

By performing the following configuration, you can set the interval to perform statistical analysis on the

traffic of a port.

When you use the display interface interface-type interface-number command to display the

information of a port, the system performs statistical analysis on the traffic flow passing through the port

during the specified interval and displays the average rates in the interval. For example, if you set this

interval to 100 seconds, the displayed information is as follows:

Last 100 seconds input: 0 packets/sec 0 bytes/sec

Last 100 seconds output: 0 packets/sec 0 bytes/sec

Follow these steps to set the interval to perform statistical analysis on port traffic:




Set the interval to perform statisticalanalysis on port traffic

flow-intervalinterval

Optional

By default, this interval is 300seconds.

Displaying and Maintaining Ethernet Ports


Display port configurationinformation

displayinterface[ interface-type |interface-type interface-number ]

Display information for a specifiedport group

display port-groupgroup-id

Display port loopback detection

statedisplay loopback-detection

Available in any view


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Display brief configurationinformation about one or all ports

display brief interface[ interface-type[ interface-number ] ] [ |{ begin|include| exclude }regular-expression ]

Display current type-specific ports display port{hybrid |trunk|combo}

Display port information about aspecified unit

display unitunit-id interface

Clear the statistics of the portreset counters interface[ interface-type | interface-typeinterface-number]

After 802.1X is enabled, the portinformation cannot be reset.

Ethernet Port Configuration Example

Network requirements

As shown in Figure 1-1:

Switch A is connected to Switch B through trunk port GigabitEthernet 1/0/1.

Configure the default VLAN ID for the trunk port as 100.

Allow the packets of VLAN 2, VLAN 6 through VLAN 50 and VLAN 100 to pass the port.

Figure 1-1 Network diagram for default VLAN ID configuration

Configuration procedure

The following configuration is used for Switch A. Configure Switch B in a similar way.

# Enter port view of GigabitEthernet 1/0/1.

[ devi ce] i nt er f ace Gi gabi t Et her net 1/ 0/ 1

# Set GigabitEthernet 1/0/1 as a trunk port and allow the packets of VLAN 2, VLAN 6 through VLAN 50

and VLAN 100 to pass the port.

[ devi ce- Gi gabi t Et hernet 1/ 0/ 1] por t l i nk- t ype t runk

[ devi ce- Gi gabi t Et hernet 1/ 0/ 1] port t r unk permi t vl an 2 6 t o 50 100

# Create VLAN 100.

[ devi ce] vl an 100

# Configure the default VLAN ID of GigabitEthernet 1/0/1 as 100.

[ devi ce- Gi gabi t Et hernet 1/ 0/ 1] port t r unk pvi d vl an 100

Troubleshooting Ethernet Port Configuration

Symptom: Default VLAN ID configuration failed.

Solution: Take the following steps.


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Use thedisplay interfaceor display portcommand to check if the port is a trunk port or a hybrid

port. If not, configure it as a trunk port or a hybrid port.

Configure the default VLAN ID.

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