H3C S9500 Series Operating instructions

Brand: H3C

Model: S9500 Series

Type: Operating instructions

H3C S9500 Series, your recently acquired networking solution, offers a comprehensive suite of features to empower your business. With advanced Ethernet port configurations, you can customize network settings to suit your specific requirements. From setting duplex attributes and adjusting speed to enabling flow control and configuring VLANs, the H3C S9500 Series provides granular control over network parameters. Moreover, its robust security features, including access control lists (ACLs) and port security, ensure the integrity and protection of your data.

Operation Manual – Ethernet Port

H3C S9500 Series Routing Switches Table of Contents

Table of Contents

Chapter 1 Ethernet Port Configuration .......................................................................................1-1

1.1 Ethernet Port Overview......................................................................................................1-1

1.2 Ethernet Port Configuration...............................................................................................1-1

1.2.1 Entering Ethernet Port View....................................................................................1-2

1.2.2 Enabling/Disabling an Ethernet Port.......................................................................1-2

1.2.3 Setting Ethernet Port Description............................................................................1-2

1.2.4 Setting the Duplex Attribute of an Ethernet Port.....................................................1-2

1.2.5 Setting Speed on the Ethernet Port ........................................................................1-3

1.2.6 Setting the Cable Type for the Ethernet Port..........................................................1-4

1.2.7 Enabling/Disabling Flow Control for the Ethernet Port............................................1-5

1.2.8 Setting the Interval for Performing Statistics on the Port........................................1-5

1.2.9 Permitting/Denying Jumbo Frames.........................................................................1-6

1.2.10 Setting Broadcast/Multicast Suppression on an Ethernet Port.............................1-6

1.2.11 Setting the Network Mode of an Ethernet Port .....................................................1-7

1.2.12 Setting the Link Type for the Ethernet Port...........................................................1-8

1.2.13 Adding the Ethernet Port to Specified VLANs.......................................................1-9

1.2.14 Setting the Default VLAN ID for the Ethernet Port................................................1-9

1.2.15 Setting the VLAN VPN Feature on a Port...........................................................1-10

1.2.16 Enabling/Disabling the VLAN Filtering Function on an Ethernet Port.................1-11

1.2.17 Copying Port Configurations to Other Ports........................................................1-11

1.2.18 Setting the Link-State Hold Time ........................................................................1-13

1.2.19 Setting the Ethernet Port in Loopback Mode......................................................1-14

1.3 Displaying and Maintaining Ethernet Port Configuration.................................................1-14

1.4 Ethernet Port Configuration Example..............................................................................1-15

1.5 Troubleshooting Ethernet Ports.......................................................................................1-16

Operation Manual – Ethernet Port

H3C S9500 Series Routing Switches Chapter 1 Ethernet Port Configuration

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Chapter 1 Ethernet Port Configuration

When configuring an Ethernet port, go to these sections for information you are

interested in:

z Ethernet Port Overview

z Ethernet Port Configuration

z Displaying and Maintaining Ethernet Port Configuration

z Ethernet Port Configuration Example

z Troubleshooting Ethernet Ports

1.1 Ethernet Port Overview

The S9500 series can provide conventional Ethernet ports, fast Ethernet ports, 1,000

Mbps Ethernet ports and 10 Gbps Ethernet ports. The configurations of these Ethernet

ports are basically the same, which will be described in the following sections.

1.2 Ethernet Port Configuration

Complete the following tasks to configure an Ethernet port:

z Entering Ethernet Port View

z Enabling/Disabling an Ethernet Port

z Setting Ethernet Port Description

z Setting the Duplex Attribute of an Ethernet Port

z Setting Speed on the Ethernet Port

z Setting the Cable Type for the Ethernet Port

z Enabling/Disabling Flow Control for the Ethernet Port

z Setting the Interval for Performing Statistics on the Port

z Permitting/Denying Jumbo Frames

z Setting Broadcast/Multicast Suppression on an Ethernet Port

z Setting the Network Mode of an Ethernet Port

z Setting the Link Type for the Ethernet Port

z Adding the Ethernet Port to Specified VLANs

z Setting the Default VLAN ID for the Ethernet Port

z Setting the VLAN VPN Feature on a Port

z Enabling/Disabling the VLAN Filtering Function on an Ethernet Port

z Copying Port Configurations to Other Ports

z Setting the Link-State Hold Time

z Setting the Ethernet Port in Loopback Mode

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1.2.1 Entering Ethernet Port View

Before configuring an Ethernet port, enter Ethernet port view first.

Perform the following configuration in system view.

To do … Use the command …

Enter Ethernet port view

interface interface-type interface-number

1.2.2 Enabling/Disabling an Ethernet Port

After configuring the related parameters and protocol of the port, you can use undo

shutdown command to enable the port. If you do not want a port to forward data any

more, use shutdown command to disable it.

Perform the following configuration in Ethernet port view.

To do ... Use the command …

Disable an Ethernet port

shutdown

Enable an Ethernet port

undo shutdown

By default, the port is enabled.

1.2.3 Setting Ethernet Port Description

To distinguish Ethernet ports, you can use the following command to make some

necessary descriptions.

Perform the following configuration in Ethernet port view.

To do … Use the command …

Configure an Ethernet port description

description text

Delete the Ethernet port description

undo description

By default, an Ethernet port has no description.

1.2.4 Setting the Duplex Attribute of an Ethernet Port

To configure a port to send and receive data packets at the same time, set it to

full-duplex. To configure a port to either send or receive data packets at a time, set it to

half-duplex. If the port has been set to auto-negotiation mode, the local and peer ports

will automatically negotiate the duplex mode.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Set duplex attribute for the Ethernet port duplex { auto | full | half }

Restore the default duplex attribute of the

Ethernet port

undo duplex

10/100 Mbps electrical Ethernet ports can operate in full-duplex, half-duplex or

auto-negotiation mode, so can a 10/100/1,000 Mbps electrical Ethernet port. However,

when the port rate is set to 1,000 Mbps or auto, the duplex mode of the port can only be

set to full (full duplex) or auto (auto-negotiation). A 100 Mbps/1,000 Mbps optical

Ethernet port operates in full duplex mode even if it is configured to operate in the

auto-negotiation mode. A 10 Gbps optical Ethernet port can only operate in full duplex

mode.

The duplex mode of Ethernet ports defaults to auto (auto-negotiation).

Caution:

z For ports coupled with photoelectric transducers, set the duplex mode to

auto-negotiation mode. Otherwise, the status check for the port may be abnormal.

z Only the GP48 interface board offers 100/1000 Mbps optical ports. By default, such

an optical port operates at 1000 Mbps in full-duplex mode. If its rate is configured as

100 Mbps, you are recommended to configure it to operate in full-duplex mode.

Otherwise, the auto-negotiation information of the port will be wrong.

z Only the GP48 interface board supports speed (10/100/1000 Mbps) and duplex

mode auto-negotiation for photoelectric transceiver modules. For the function to

work, you must ensure that the modules are 1000_BASE_T photoelectric

transceiver modules certified by H3C.

1.2.5 Setting Speed on the Ethernet Port

You can use the following command to set the speed on the Ethernet port. If the speed

is set to auto-negotiation mode, the local and peer ports will automatically negotiate the

port speed.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Set Ethernet port speed speed { 10 | 100 | 1000 | 10000 | auto }

Restore the default speed on the

Ethernet port

undo speed

The speed options in the command are available depending on the type and duplex

mode of the port. For example, for 10/100/1,000 Mbps electrical ports, 10 Mbps, 100

Mbps, and 1,000 Mbps are available. You can select a proper port speed as needed.

However, when the duplex mode is changed to half duplex, the port speed cannot be

set to 1,000 Mbps or auto.

The 10/100 Mbps electrical Ethernet port can operate at 10 Mbps, 100 Mbps and in

auto mode. You can set it accordingly.

The 10/100/1,000 Mbps electrical Ethernet port can operate at 10 Mbps, 100 Mbps, or

1,000 Mbps. However in half duplex mode, the port cannot operate at 1,000 Mbps or in

auto mode. The 100 Mbps optical Ethernet port supports 100 Mbps; the 1,000 Mbps

optical Ethernet port supports 1,000 Mbps; a 10 Gbps optical Ethernet port only

supports 10 Gbps.

By default, the speed of the port is in auto mode.

Caution:

z Only the GP48 interface board offers 100/1000 Mbps optical ports. By default, such

an optical port operates at 1000 Mbps in full-duplex mode. If its rate is configured as

100 Mbps, you are recommended to configure it to operate in full-duplex mode.

Otherwise, the auto-negotiation information of the port will be wrong.

z Only the GP48 interface board supports speed (10/100/1000 Mbps) and duplex

mode auto-negotiation for photoelectric transceiver modules. For the function to

work, you must ensure that the modules are 1000_BASE_T photoelectric

transceiver modules certified by H3C.

1.2.6 Setting the Cable Type for the Ethernet Port

The Ethernet port supports straight-through and cross-over network cables. The

following command can be used for configuring the cable type.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Set the type of the cable connected to the

Ethernet port

mdi { across | auto | normal }

Restore the default type of the cable connected

to the Ethernet port

undo mdi

 Note:

z The settings only take effect on 10/100 Mbps and 10/100/1000 Mbps electrical

ports.

z 10Gbps Ethernet ports support optical fiber only.

By default, the cable type is auto (auto-recognized). That is, the system can

automatically recognize the type of the cable connecting to the port.

1.2.7 Enabling/Disabling Flow Control for the Ethernet Port

After enabling flow control in both the local and the peer switch, if congestion occurs in

the local switch, the switch will inform its peer to pause packet sending. Once the peer

switch receives this message, it will pause sending packets to the local switch, and vice

versa. In this way, packet loss is reduced effectively. The flow control function of the

Ethernet port can be enabled or disabled through the following command.

Perform the following configuration in Ethernet port view.

To do … Use the command …

Enable Ethernet port flow control

flow-control

Disable Ethernet port flow control

undo flow-control

By default, Ethernet port flow control is disabled.

1.2.8 Setting the Interval for Performing Statistics on the Port

Follow these steps to set the interval for performing statistics on the port:

To do … Use the command … Remarks

Enter system view

system-view

—

Enter Ethernet port

view/POS port view

interface interface-type

interface-number

Required

The interface-type

argument is the Ethernet

or POS port type.

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To do … Use the command … Remarks

Set the interval for

performing statistics on

the port

flow-interval interval

Required

300 seconds by default

1.2.9 Permitting/Denying Jumbo Frames

During large throughput data switching, like in file transmission, a card may encounter

jumbo frames larger than the standard Ethernet frame length. You may configure the

device to permit them to pass the card or deny them.

Perform the following configuration in system view.

To do … Use the command …

Enable Jumbo frames to pass the card

on a specified slot, and set the maximum

length of Jumbo frames allowed to pass

the card

jumboframe enable

[ jumboframe-value ] slot slot-number

Disable Jumbo frames from passing the

card on a specified slot

jumboframe disable slot slot-number

By default, jumbo frames are allowed to pass.

 Note:

z The system supports discrete Jumbo frame sizes ranging from 1,552 to 10,240.

However, effective Jumbo frame values fall into several sections: the effective

Jumbo frame sizes for the 1,552-9,022 section are 1,552 and 9,022, that for the

9,023-9,192 section is 9,192, and that for the 9,193-10,240 section is 10,240.

z For XP4 LPUs that are not of wire speed, only the jumbo frame value 10,236 is

supported, while all the other GE LPUs and 10GE LPUs support the jumbo frame

value 10,240. LSB1GV48 LPUs support only the jumbo frame value 10,236, and

LSB2FT48C0 LPUs support only the jumbo frame value 1,552.

1.2.10 Setting Broadcast/Multicast Suppression on an Ethernet Port

To prevent port congestion resulting from broadcast/multicast packet flooding, the

switch supports broadcast/multicast suppression. You can enable broadcast/multicast

suppression by setting a suppression triggering speed percentage or bandwidth

threshold.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Configure broadcast suppression on the

Ethernet port

broadcast-suppression { ratio |

bandwidth bandwidth }

Restore the default setting of broadcast

suppression on the Ethernet port

undo broadcast-suppression

Configure multicast suppression on the

Ethernet port

multicast-suppression { ratio |

bandwidth bandwidth }

Restore the default setting of multicast

suppression on the Ethernet port

undo multicast-suppression

Caution:

z You cannot enable both broadcast suppression and multicast suppression

simultaneously on the same card. Namely, once you have enabled broadcast

suppression on some ports of a card, you cannot enable multicast suppression on

the other ports of the card, and vice versa.

z To modify the broadcast/multicast suppression triggering threshold in the

percentage form on a port, make sure all the ports on a board adopt the default

suppression triggering threshold in the percentage form.

z When broadcast/multicast suppression is enabled on an LPU, you can set different

broadcast/multicast suppression triggering percentage values for different ports on

the LPU.

z While broadcast suppression does not work on multicasts, multicast suppression

can suppress broadcasts.

z No distinction is made between known multicast and unknown multicast for

multicast suppression.

z Broadcast suppression is implemented in a multiple of 64 bytes.

By default, the threshold for broadcast suppression is 50%, while that for multicast

suppression is 100%.

1.2.11 Setting the Network Mode of an Ethernet Port

A port in WAN mode is used for connecting to an SDH network, while a port in LAN

mode is used for connecting to Ethernet.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Set the network mode of the Ethernet port port-mode { wan | lan }

Restore the default network mode undo port-mode

By default, Ethernet ports work in LAN mode. 10-GE Ethernet ports support WAN

mode.

 Note:

Ports on the XP4CA and XP4B boards do not support the WAN mode.

1.2.12 Setting the Link Type for the Ethernet Port

The link type of an Ethernet port can be access, hybrid, or trunk. The access port

carries one VLAN only and is used for connecting to the user’s computer. The trunk port

can belong to more than one VLAN to receive/send packets for them and is used for

connection between switches. The hybrid port can also carry more than one VLAN to

receive/send packets for them and is used for connecting both switches and user

computers. The difference between the hybrid port and the trunk port is that the hybrid

port allows the packets from multiple VLANs to be sent without tags, but the trunk port

only allows the packets from the default VLAN to be sent without tags.

Perform the following configuration in Ethernet port view.

To do … Use the command …

Configure the port as access port

port link-type access

Configure the port as hybrid port

port link-type hybrid

Configure the port as trunk port

port link-type trunk

Restore the default link type, that is, the access port

undo port link-type

You can configure three types of ports concurrently on the same switch, but you cannot

switch the link type of a port directly between trunk and hybrid. To change the link type

of a port from trunk to hybrid or vice versa, you must first set it to access.

The default port type is access.

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1.2.13 Adding the Ethernet Port to Specified VLANs

The following commands are used for adding an Ethernet port to a specified VLAN. The

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

added to multiple VLANs.

Perform the following configuration in Ethernet port view.

To do … Use the command …

Add the current access port to a

specified VLAN

port access vlan vlan-id

Add the current hybrid port to specified

VLANs

port hybrid vlan vlan-id-list { tagged |

untagged }

Add the current trunk port to specified

VLANs

port trunk permit vlan { vlan-id-list |

all }

Remove the current access port from to

a specified VLAN

undo port access vlan

Remove the current hybrid port from to

specified VLANs

undo port hybrid vlan vlan-id-list

Remove the current trunk port from

specified VLANs

undo port trunk permit vlan

{ vlan-id-list | all }

Caution:

The access port shall be added to an existing VLAN other than VLAN 1. The VLAN to

which a Hybrid port is added must be an existing VLAN.

After adding the Ethernet port to specified VLANs, the local port can forward packets of

these VLANs. The hybrid and trunk ports can be added to multiple VLANs, thereby

implementing the VLAN intercommunication between peers. On a hybrid port, you can

configure to tag some VLAN packets so that they can be processed differently.

1.2.14 Setting the Default VLAN ID for the Ethernet Port

Since the access port can only be included in one VLAN, its default VLAN is the one to

which it belongs. As the hybrid port and the trunk port can be included in multiple

VLANs, it is necessary to assign them a default VLAN ID. Configured with a default

VLAN ID, the hybrid or trunk port forwards the packets received without VLAN tags to

the default VLAN. If the port receives a packet with the default VLAN tag, it will remove

the tag before forwarding the packet.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Set the default VLAN ID for the hybrid port

port hybrid pvid vlan vlan-id

Set the default VLAN ID for the trunk port

port trunk pvid vlan vlan-id

Restore the default VLAN ID of the hybrid port

to the default value

undo port hybrid pvid

Restore the default VLAN ID of the trunk port to

the default value

undo port trunk pvid

Caution:

To guarantee the proper packet transmission, 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 switch.

The default VLAN on the hybrid or trunk port is VLAN 1 and that on the access port is

the VLAN to which it belongs.

1.2.15 Setting the VLAN VPN Feature on a Port

A VLAN Tag consists of 12 bits (defined by IEEE802.1Q), so Ethernet Switches can

support up to 4 K VLANs. Yet, this is far from enough for a network like MAN

(metropolitan area network), where a large number of VLANs are required to isolate

users.

The port VLAN VPN feature allows your switch to tag an originally tagged packet,

namely, to mark the packet with another VLAN Tag besides the original one, thus

providing VLANs as many as 4 K x 4 K. In addition, the use of dual tags allows you to

use the original VLAN Tag for differentiating users and services and the new VLAN Tag

for carrying services and VPNs, making VPN configuration simple and practicable.

Through VLAN VPN configuration, Ethernet Switches can better meet the requirement

in MAN.

If VLAN VPN is enabled on a port, every packet received on the port (no matter whether

the packet carries a VLAN Tag or not) will be given a new Tag that specifies the default

VLAN of this port. Thus, a tagged packet received on the port will be sent out with dual

tags and an untagged one will be sent out with only the default VLAN tag of the port.

Perform the following configuration in Ethernet port view.

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To do … Use the command …

Enable the port VLAN VPN feature

vlan-vpn enable

Disable the port VLAN VPN feature

undo vlan-vpn

Note that if GVRP, STP, or 802.1x has been enabled on the port, you will be unable to

enable the VLAN VPN feature.

By default, the port VLAN VPN feature is disabled.

1.2.16 Enabling/Disabling the VLAN Filtering Function on an Ethernet Port

Perform the following configuration in Ethernet port view.

To do … Use the command …

Enable the VLAN filtering function

vlan filter enable

Disable the VLAN filtering function

vlan filter disable

By default, the VLAN filtering function is enabled on Ethernet ports.

With the VLAN filtering function enabled, the port permits only the packets of the VLAN

where it resides. With the VLAN filtering function disabled, the port forwards all the

packets it received.

1.2.17 Copying Port Configurations to Other Ports

To keep the configurations of some ports consistent with a specified port, you can use

the copy configuration command to copy the configurations of that specified port to

the other ports. Such configurations may involve STP, QoS, LACP, and port settings as

follows:

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Table 1-1 Configurations that can be copied

Attribute Detailed Setting

Enable/disable STP

Port priority

Path cost

Link attributes(point-to-point or not)

Port mCheck

Max transmission speed

Enable/disable root protection

Enable/disable loop protection

Edge or non-edge port

STP settings

Reset ARP or not

Define/apply flow template

Traffic reshaping

Traffic redirection

Packet filtering

Priority re-assignment

Traffic statistics

Traffic mirroring

QoS settings

Rate limiting

Permitted VLAN ID

Default VLAN ID

Add ports to VLAN

Default 802.1p priority

Port speed, duplex mode

Port settings

Port link type

LACP Enable/disable LACP on the port

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 Note:

z Using the copy configuration command will clear protocol VLAN attributes of the

destination port, but it will not copy the protocol VLAN attributes of the source port to

the destination port.

z With the copy configuration command, you can only copy the configurations of

Ethernet ports, Gigabit Ethernet ports and aggregation groups.

z You cannot copy the configuration of a port to ports of XP4B and XP4CA LPUs.

z The uplink port of an isolation group cannot be configured as the source port or

destination port in the copy configuration command.

Perform the following configuration in system view.

To do … Use the command …

Copy port configurations

to other ports

copy configuration source { interface-type

interface-number | aggregation-group agg-id }

destination { interface-list [ aggregation-group

agg-id ] | aggregation-group agg-id }

Caution:

If the copy source is an aggregation group, the selected port with the least port number

is taken as the source; if the copy destination is an aggregation group, the

configurations of all ports in the group are updated to the configurations of the source.

You cannot specify a dynamic aggregation group as the destination port in the copy

command.

1.2.18 Setting the Link-State Hold Time

Frequent port up/down may affect the performance of the switch. To avoid the situation,

you may configure the link-state hold time.

The system can record and report port changes to the user in one of the following two

ways.

z Interruption report: The switch does not suppress port state change reporting and

reports the changes immediately.

z Polling report: The switch suppresses port state change reporting. You can use

the link-status hold command to set the link-state hold time.

With the link-state hold time set to zero seconds, the switch always prefers the

interruption report mode to the polling report mode, so long as the former is supported.

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With the link-state hold time set to a non-zero value, the port adopts the polling report

mode, whether the interruption report mode is supported or not.

Therefore, you can switch the port state change reporting mode by setting the link-state

hold time.

Perform the following configuration in system view.

To do … Use the command …

Set the link-state hold time link-status hold hold-time

Restore the default value

undo link-status hold

The default link-state hold time is 3 seconds.

1.2.19 Setting the Ethernet Port in Loopback Mode

Perform the following configuration in Ethernet port view.

To do … Use the command …

Set the Ethernet port in loopback mode loopback { external | internal }

Remove loopback configuration on the port

undo loopback

 Note:

At present, the Ethernet ports of the S9500 series switches do not support the external

loopback mode.

By default, the Ethernet port is not in loopback mode.

1.3 Displaying and Maintaining Ethernet Port Configuration

To do … Use the command … Remarks

Display information for

specified port(s)

display interface

[ interface-type | interface-type

interface-number [ packets ] ]

Available in any view

Display hybrid or trunk

ports

display port { hybrid | trunk } Available in any view

Display the statistics

information for the

specified port(s)

display counters [ rate ]

{ inbound | outbound }

interface [ interface-type ]

Available in any view

Clear the statistics of the

specified port(s)

reset counters interface

[ interface-type | interface-type

interface-number ]

Available in user view

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To do … Use the command … Remarks

Display Jumbo frame

configuration on all cards

display jumboframe

configuration

Available in any view

Display the current alarm

information of the optical

transceiver module

plugged in the specified

port or all optical

transceiver modules

display transceiver alarm

interface [ interface-type

interface-number ]

Available in any view

Display the currently

measured values of the

diagnosis parameters for

the pluggable optical

transceiver in the

specified port or all

transceivers

display transceiver

diagnosis interface

[ interface-type

interface-number ]

Available in any view

Display the major

parameters of the optical

transceiver plugged in the

specified port or all optical

transceivers

display transceiver interface

[ interface-type

interface-number ]

Available in any view

Display the radio

frequency identification

(RFID) information of the

pluggable optical

transceiver in the

specified port or all optical

transceivers

display transceiver

manuinfo interface

[ interface-type

interface-number ]

Available in any view

 Note:

z When 802.1x is enabled on a port, the statistics information of the port cannot be

cleared.

z By default, the display counters command displays the traffic statistic information

of all ports in position.

z The supported Jumbo frame length range and default value may vary by card.

1.4 Ethernet Port Configuration Example

I. Network requirements

z Switch A is connected to Switch B through GigabitEthernet 2/1/1.

z Configure GigabitEthernet 2/1/1 as a trunk port permitting packets of VLAN 2,

VLAN 6 through VLAN 50, and VLAN 100. Set VLAN 100 as the default VLAN on

GigabitEthernet 2/1/1.

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II. Network diagram

Figure 1-1 Network diagram for Ethernet port configuration

III. Configuration procedure

 Note:

The following configuration is made on Switch A. Please configure Switch B in the

similar way.

# Enter the Ethernet port view of GigabitEthernet 2/1/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface GigabitEthernet2/1/1

# Configure GigabitEthernet 2/1/1 as a trunk port permitting packets of VLAN 2, VLAN 6

through VLAN 50, and VLAN 100.

[H3C-GigabitEthernet2/1/1] port link-type trunk

[H3C-GigabitEthernet2/1/1] port trunk permit vlan 2 6 to 50 100

[H3C-GigabitEthernet2/1/1] quit

# Create VLAN 100.

[H3C] vlan 100

[H3C-vlan100] quit

# Configure VLAN 100 as the default VLAN on GigabitEthernet 2/1/1.

[H3C] interface GigabitEthernet2/1/1

[H3C-GigabitEthernet2/1/1] port trunk pvid vlan 100

1.5 Troubleshooting Ethernet Ports

Symptom 1: Default VLAN ID configuration fails.

Solution: Take the following steps:

z Execute the display interface or display port command to check whether the

port is a trunk port or a hybrid port. If it is neither, configure it as a trunk or hybrid

port.

z Configure the default VLAN ID.

Symptom 2: The port is in down status.

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H3C S9500 Series Routing Switches Chapter 1 Ethernet Port Configuration

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Solution: Check that

z The cable connection is correct and the optical fibers are correctly connected.

z The port has not been administratively shut down.

z The correct optical module is used.

H3C S9500 Series Operating instructions

H3C S9500 Series Operating instructions

H3C S9500 Series Operating instructions

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