Dell PowerConnect 3424 User Manual

DellTM PowerConnectTM 34XX Systems

User’s Guide Addendum

DellTM PowerConnectTM 34XX Systems 1

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to

avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

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____________________

Information in this document is subject to change without notice.

© 2006 Dell Inc. All rights reserved.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Trademarks used in this text: Dell, Dell OpenManage, the DELL logo, and PowerConnect are trademarks of Dell Inc. Microsoft
and Windows are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names
or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

September 2006 Rev. A02

2 User’s Guide Addendum

This document is an addendum to the PowerConnect 34XX user guide and includes the
following topics:

• Configuring QinQ

• Defining STP Root Guard

• Configuring LLDP

• HTTP/HTTPS Upload/Download

User’s Guide Addendum 3

Configuring QinQ

Configuring Customer VLANs Using the Web Interface

Customer VLANs are configured using QinQ. QinQ tagging allows network managers to add an
additional tag to previously tagged packets. Adding additional tags to the packets helps create
more VLAN space. The added tag provides an VLAN ID to each customer, this ensures private
and segregated network traffic. The VLAN ID tag is assigned to a customer port in the service
providers network. The designated port then provides additional services to the packets with the
double-tags. This allows administrators to expand service to VLAN users.

To configure customer VLANs:

1

Click

www.dell.com | support.dell.com

Figure 1-1. VLAN Membership

Switch > VLAN > VLAN Membership

. The

VLAN Membership

page opens.

2

Click . The

Figure 1-2. Create New VLAN

3

Define the

4 User’s Guide Addendum

VLAN ID and VLAN Name fields.

Create New VLAN

page opens:

4

Click .

5

Click

Switch > VLAN > Port Settings

Figure 1-3. VLAN Port Settings

6

Select the interface.

7

Set the Port VLAN Mode field to

8

Define the remaining fields.

9

Click . The VLAN Port settings are saved, and the device is updated.

10

Click . The

VLAN Port Table

. The

Customer

VLAN Port Settings

.

opens.

page opens.

Figure 1-4. VLAN Port Table

11

Select the Port VLAN Mode.

User’s Guide Addendum 5

12

Click . The customer VLAN is defined, and the device is updated.

Configuring Customer VLANs using the CLI

To configure QinQ, perform the following:

1

Enter the global configuration mode.

Console>enable
Console#config
Console (config)#

2

Enter the VLAN configuration mode.

Console (config)# vlan database
Console (config-vlan)#

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3

Create VLAN in the VLAN database.

Console (config-vlan)# vlan 100
Console (config-vlan)# exit

4

Configure port e5 as a customer port for VLAN 100.

Console (config)# interface ethernet 1/e5
Console (config-if)# switchport mode customer
Console (config-if)# switchport customer vlan 100
Console (config-if)# exit
Console (config)#

5

Configure port e10 as a trunked port, tagged for VLAN 100.

Console (config)# interface ethernet 1/e10
Console (config-if)# switchport mode trunk
Console (config-if)# switchport trunk allowed vlan add 100
Console (config-if)# exit
Console (config)#

The following is an example of the QinQ show commands:

console# show interfaces switchport ethernet 1/e5
Port: 1/e5
Port Mode: Customer
Gvrp Status: disabled
Ingress Filtering: true
Acceptable Frame Type: admitAll
Ingress UnTagged VLAN ( NATIVE ): 100
Protected: Disabled

Port is member in:

Vlan Name Egress rule Port Membership Type

---- ----------------------- ----------- -------------------­100 100 Untagged Static

Forbidden VLANS:

6 User’s Guide Addendum

Vlan Name

---- -----------------------

Classification rules:

Protocol based VLANs:

Group ID Vlan ID

-------- ------------------

Mac based VLANs:

Group ID Vlan ID

-------- ------------------

Subnet based VLANs:

Group ID Vlan ID

-------- ------------------

console#

QinQ Example

console# show ip igmp snooping cpe vlans

inner VLAN multicast TV VLAN

----------------------- -------------------­3 3001
4 3000

User’s Guide Addendum 7

Defining STP Root Guard

Use the

To open the
tree view.

Figure 1-5. STP Port Settings

www.dell.com | support.dell.com

Select a Port —

STP —

Fast Link —

a port, the

Link mode optimizes the time it takes for the STP protocol to converge. STP convergence can take

30-60 seconds in large networks.

Root Guard —

Port State —

forwarding action is taken on traffic. Possible port states are:

STP Port Settings

STP Port Settings

Enables or disables STP on the port.

When checked, enables Fast Link mode for the port. If Fast Link mode is enabled for

Port State

Disabled —

page to assign Spanning Tree Port (STP) properties to individual ports.

page, click

Port number for which you want to modify STP settings.

is automatically placed in the

When checked, the port is never selected as the STP root interface.

Indicates the current STP state of a port. If enabled, the port state determines what

STP is currently disabled on the port. The port forwards traffic while learning

Switch →

Spanning Tree →

Forwarding

state when the port link is up. Fast

STP Port Settings

in the

MAC addresses.

Blocking —

addresses. Blocking is displayed when Classic STP is enabled.

8 User’s Guide Addendum

The port is currently blocked and cannot be used to forward traffic or learn MAC

Listening —

The port is currently in the listening mode. The port cannot forward traffic nor

can it learn MAC addresses.

Learning —

The port is currently in the learning mode. The port cannot forward traffic

however it can learn new MAC addresses.

Forwarding — The port is currently in the forwarding mode. The port can forward traffic and

learn new MAC addresses.

Role —Indicates the port role assigned by the STP algorithm that provides STP paths. The pos-

sible field values are:

Root —

Designated —

Alternate —

Backup —

Provides the lowest cost path to forward packets to root switch.

Indicates the port via which the designated switch is attached to the LAN.

Provides an alternate path to the root switch from the root interface.

Provides a backup path to the designated port path toward the Spanning Tree

leaves. Backup ports occur only when two ports are connected in a loop by a point-to-point

link. Backup ports also occur when a LAN has two or more connections connected to a shared

segment.

Disabled —

Speed —

Path Cost (1-200000000) —

Indicates the port is not participating in the Spanning Tree.

Speed at which the port is operating.

The port contribution to the root path cost. The path cost is adjusted

to a higher or lower value, and is used to forward traffic when a path being rerouted.

Default Path Cost —

Ethernet

The default path cost. The default values for long path costs are:

- 2,000,000

Fast Ethernet

Gigabit Ethernet

- 200,000

- 20,000

The default values for short path costs are:

Ethernet

Fast Ethernet

Gigabit Ethernet

Priority —

- 100

- 19

- 4I

Priority value of the port. The priority value influences the port

choice when a bridge has two ports connected in a loop. The priority value is between 0 -240. The

priority value is provided in increments of 16.

User’s Guide Addendum 9

Designated Bridge ID —

Designated Port ID —

Designated Cost —

The bridge priority and the MAC Address of the designated bridge.

The designated port’s priority and interface.

Cost of the port participating in the STP topology. Ports with a lower cost are

less likely to be blocked if STP detects loops.

Forward Transmission —

Blocking

LAG —

.

The LAG to which the port is attached.

Number of times the port has changed from the

Defining STP LAG Settings

Forwarding

state to

www.dell.com | support.dell.com

Use the STP LAG Settings page to assign STP aggregating ports parameters.

To open the STP LAG Settings page, click Switch
the tree view.

Figure 2. STP LAG Settings

→ Spanning Tree → STP LAG Settings in

Select a LAG —

STP —

Enables or disables STP on the LAG.

Fast Link —

Root Guard —

LAG State

The LAG number for which you want to modify STP settings.

Enables Fast Link mode for the LAG. If Fast Link mode is enabled for a LAG, the

When checked, the LAG is never selected as the STP root Interface.

is automatically placed in the

optimizes the time it takes for the STP protocol to converge. STP convergence can take 30-60

10 User’s Guide Addendum

Forwarding

state when the LAG is up. Fast Link mode

seconds in large networks.

LAG State —

Current STP state of a LAG. If enabled, the LAG state determines what forwarding

action is taken on traffic. If the bridge discovers a malfunctioning LAG, the LAG is placed in the

Broken

state. Possible LAG states are:

Disabled —

STP is currently disabled on the LAG. The LAG forwards traffic while learning

MAC addresses.

Blocking —

The LAG is blocked and cannot be used to forward traffic or learn MAC

addresses.

RSTP Discarding State —

In this state the port does not learn MAC addresses and do not

forward frames.

This state is union of Blocking, and Listening state introduced in STP (802.1.D).

Listening —

The LAG is in the listening mode and cannot forward traffic or learn MAC

addresses.

Learning —

The LAG is in the learning mode and cannot forward traffic, but it can learn new

MAC addresses.

Forwarding —

The LAG is currently in the forwarding mode, and it can forward traffic and

learn new MAC addresses.

Broken —

Role—

Indicates the LAG role assigned by the STP algorithm that provides STP paths. The

The LAG is currently malfunctioning and cannot be used for forwarding traffic.

possible field values are:

Root —

Designated —

Alternate —

Provides the lowest cost path to forward packets to root switch.

Indicates that the via which the designated switch is attached to the LAN.

Provides an alternate LAG to the root switch from the root interface.

Backup —

Provides a backup path to the designated port path toward the Spanning Tree

leaves. Backup ports occur only when two ports are connected in a loop by a point-to-point

link. Backup ports also occur when a LAN has two or more connections connected to a shared

segment.

Disabled —

Path Cost (1-200000000) —

Indicates the LAG is not participating in the Spanning Tree.

Amount the LAG contributes to the root path cost. The path cost is

adjusted to a higher or lower value, and is used to forward traffic when a path is being rerouted. The

User’s Guide Addendum 11

path cost has a value of 1 to 200000000.

Default Path Cost —

Indicates if the default path cost is used. The possible LAG path cost default

values are:

Long Method for LAG —

20,000

Short Method for LAG

Priority (0-240, in steps of 16) —

choice when a bridge has looped ports. The priority value is between 0-240, in steps of 16.

Designated Bridge ID —

Designated LAG — The designated LAG’s priority and interface.

www.dell.com | support.dell.com

Designated Cost —

less likely to be blocked if STP detects loops.

Forward Transitions —

a Blocking state.

Defining STP LAG Settings Using CLI Commands

The following table summarizes the equivalent CLI commands for defining STP LAG settings.

Table 1-1. STP LAG Settings CLI Commands

CLI Command Description

spanning-tree Enables spanning tree.

spanning-tree disable Disables spanning tree on a specific

spanning-tree cost cost Configures the spanning tree cost

spanning-tree port-priority priority Configures port priority.

spanning-tree guard root

show spanning-tree [ ethernet interface
| port-channel port-channel-number]

show spanning-tree [detail] [active |
blockedports]

— 4

Priority value of the LAG. The priority value influences the LAG

The priority and the MAC Address of the designated bridge.

Cost of the port participating in the STP topology. Ports with a lower cost are

Number of times the LAG State has changed from the Forwarding state to

LAG.

contribution of a LAG.

Enables root guard on all the spanning
tree instances on that interface.

Displays spanning tree configuration.

Displays detailed spanning tree
information on active or blocked ports.

12 User’s Guide Addendum

The following is an example of the CLI commands:

console(config)# interface port-channel 1

console(config-if)# spanning-tree port-priority 16

User’s Guide Addendum 13

Configuring LLDP

The Link Layer Discovery Protocol (LLDP) allows network managers to troubleshoot and enhance
network management by discovering and maintaining network topologies over multi-vendor
environments. LLDP discovers network neighbors by standardizing methods for network devices to
advertise themselves to other system, and to store discovered information. Device discovery
information includes:

• Device Identification

• Device Capabilities

• Device Configuration

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The advertising device transmits multiple advertisement message sets in a single LAN packet. The
multiple advertisement sets are sent in the packet Type Length Value (TLV) field. LLDP devices
must support chassis and port ID advertisement, as well as system name, system ID, system
description, and system capability advertisements.

To open the

Figure 1-1. LLDP Properties

LLDP Properties

page, click

System → LLDP → LLDP Properties

in the tree view

.

Enable LLDP

Checked — Indicates that LLDP is enabled on the device.

Unchecked — Indicates that LLDP is disabled on the device. This is the default value.

14 User’s Guide Addendum

— Indicates if LLDP is enabled on the device. The possible field values are:

Updates Interval (5-32768) — Indicates that rate at which LLDP advertisement updates are

sent. The possible field range is 5 - 32768 seconds. The default value is 30 seconds.

Hold Time (2-10) —

Indicates the amount of time that LLDP packets are held before the pack-

ets are discarded. The possible field range is 2 - 10 seconds. The field default is 4 seconds.

Reinitializing Delay (1-10) — Indicates the amount of time that passes between disabling

LLDP and when reinitializing begins. The possible field range is 1 - 10 seconds. The field

default is 2 seconds.

Transmit Delay (1-8192) — Indicates the amount of time that passes between successive LLDP

frame transmissions due to changes in the LLDP local systems MIB. The possible field value is

1 – 8192 seconds. The field default is 2 seconds.

Configuring LLDP Using CLI Commands

The following table summarizes the equivalent CLI commands for defining LLDP.

Table 1-2. LLDP Properties CLI Commands

CLI Command Description

lldp enable (global)

lldp hold-multiplier number

lldp reinit-delay Seconds

lldp tx-delay Seconds

Enables enable Link Layer Discovery
Protocol.

Specifies the time that the receiving
device should hold a Link Layer
Discovery Protocol (LLDP) packet
before discarding it.

Specifies the minimum time an LLDP
port will wait before reinitializing.

Specifies the delay between successive
LLDP frame tr.ansmissions.

Console(config)# interface ethernet 1/e5

Console(config-if)# lldp enable

Defining LLDP Port Settings

The

LLDP Port Settings

including the port number, the LLDP port number, and the type of port information advertised.

The

Port Settings

To open the

Port Settings

page allows network administrators to define LLDP port settings,

page contains fields for configuring LLDP.

page, click

System → LLDP

→ Port Settings

in the tree view

.

User’s Guide Addendum 15

Figure 1-2. Port Settings

www.dell.com | support.dell.com

Port

— Contains a list of ports on which LLDP is enabled.

State

— Indicates the port type on which LLDP is enabled. The possible field values are:

Tx Only

— Enables transmitting LLDP packets only.

Rx Only

Tx & Rx

Disable

Use Default

— Enables receiving LLDP packets only.

— Enables transmitting and receiving LLDP packets. This is the default value.

— Indicates that LLDP is disabled on the port.

— Indicates that information included in the TLVs is per the device defaults. The

possible field values are:

Checked

Unchecked

— Enables sending the device default LLDP advertisements.

— Indicates that the device LLDP advertisement settings are disabled, and LLDP

advertisement settings are user defined. This is the default value.

Optional TLVs

Available TLVs

see the

Available TLVs

— Contains a list of optional TLVs advertised by the port. For the complete list,

— Contains a list of available TLVs that can be advertised by the port. The

possible field values are:

Port Description

System Name

16 User’s Guide Addendum

field.

— Advertises the port description.

— Advertises the system name.

System Description

— Advertises the system description.

System Capabilities

Management IP Address

— Advertises the system capabilities.

— Indicates the management IP address that is advertised from the

interface.

The

LLDP Port Table

click

System → LLDP → Port Settings → S

Figure 1-3. LLDP Port Table

Table 1-3. LLDP Port settings CLI Commands

CLI Command Description

clear lldp rx interface

lldp optional-tlv tlv1 [tlv2

… tlv5]

lldp enable [rx | tx | both] To enable Link Layer Discovery

page displays the LLDP Port Configuration. To open the

how All

Restarts the LLDP RX state machine
and clearing the neighbors table

Specifies which optional TLVs from the
basic set should be transmitted

Protocol (LLDP) on an interface.

in the tree view

LLDP Port Table

,

.

The following is an example of the CLI commands:

Console(config)# interface ethernet 1/e5

Console(config-if)# lldp enable

User’s Guide Addendum 17

Viewing Advertised Information

The

Advertised Information

advertising LLDP information.

To open the
tree view.

Figure 1-4. Advertised Information

www.dell.com | support.dell.com

Advertised Information

page displays the information advertised by specific ports when

page, click

System → LLDP → Advertised Information

in the

Port

— Displays the port number from which the advertised information is sent.

Device ID

Capabilities

System Name

— Displays the advertised device ID.

— Displays the advertised device capabilities.

— Displays the advertised system name.

System Description

Port Description

Management Address

18 User’s Guide Addendum

— Displays the advertised system description.

— Displays the advertised port description.

— Displays the advertised management address.

Displaying the Advertised Information Table

To open the

Show All

Figure 1-5. Advertised Information Table

Table 1-4. LLDP Advertised Information CLI Commands

CLI Command Description

show lldp local ethernet
interface

Advertised Information table

in the tree view

.

, click

Displays LLDP information
advertised from a specific port.

System → LLDP → Advertised Information →

User’s Guide Addendum 19

The following is an example of the CLI commands:

Switch# show lldp local ethernet 1/e1

Device ID: 0060.704C.73FF

Port ID: 1

Capabilities: Bridge

System Name: ts-7800-1

System description:

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Port description:

Management address: 172.16.1.8

802.3 MAC/PHY Configuration/Status

Auto-negotiation support: Supported

Auto-negotiation status: Enabled

Auto-negotiation Advertised Capabilities: 100BASE-TX full duplex,
1000BASE-T full duplex

Operational MAU type: 1000BaseTFD

LLDP-MED capabilities: Network Policy, Location Identification

LLDP-MED Device type: Network Connectivity

LLDP-MED Network policy

Application type: Voice

Flags: Tagged VLAN

VLAN ID: 2

Layer 2 priority: 0

DSCP: 0

LLDP-MED Power over Ethernet

Device Type: Power Sourcing Entity

Power source: Primary Power Source

Power priority: High

Power value: 9.6 Watts

LLDP-MED Location

Coordinates: 54:53:c1:f7:51:57:50:ba:5b:97:27:80:00:00:67:01

20 User’s Guide Addendum

Viewing the LLDP Neighbor Information

The

Neighbors Information

advertisements.

To open the
tree view

Figure 1-6. Neighbors Information

Neighbors Information

.

page contains information received from neighboring device LLDP

page, click

System →

LLDP

→

Neighbors Information

in the

Port

— Displays the neighboring port number.

Device ID

Port ID

Capabilities

System Name

1

2

Displaying the Neighbor Information Table

1

2

— Displays the neighboring device ID.

— Displays the neighboring port ID.

— Displays the neighboring device capabilities.

— Displays the neighboring system time.

Select a port.

Click

Apply Changes

Click

System →

Click

Show All

. The port advertisement information is displayed.

LLDP

→

Neighbors Information

. The

Neighbor

Table opens.

in the tree view

.

User’s Guide Addendum 21

Figure 1-7. Neighbors Table

Table 1-5. LLDP Neighbor Information CLI Commands

www.dell.com | support.dell.com

CLI Command Description

show lldp neighbors

interface

The following is an example of the CLI commands:

Switch# show lldp neighbors

Port Device ID Port

1/e1 0060.704C.73FE 1 117 B ts-7800-2

1/e2 0060.704C.73FD 1 93 B ts-7800-2

2/e3 0060.704C.73F C 9 1 B, R ts-7900-1

1/e1

0060.704C.73FB 1 92 W ts-7900-2

Displays information about neighboring
devices discovered using Link Layer
Discovery Protocol (LLDP)

ID

Hold
Time

Capabilities

System
Name

22 User’s Guide Addendum

HTTP/HTTPS Upload/Download

Downloading Files

The

File Download from Server

Configuration files from the TFTP server to the device.

To open the

1

Figure 2. File Download from Server

File Download from Server

Click

System →

File Management→ File Download

page contains fields for downloading system image and

page:

in the tree view.

TFTP —

HTTP —

Firmware Download —
Configuration Download

Configuration Download —

selected, the

Enables initiating an upload via the TFTP server.

Enables initiating an upload via the HTTP/HTTPS server.

The Firmware file is downloaded. If

fields are grayed out.

Firmware Download

Firmware Download

Server IP Address —

Source File Name —

Destination File Name —

The Server IP Address from which the firmware files are downloaded.

Indicates the file to be downloaded.

Firmware Download

The Configuration file is downloaded. If

fields are grayed out.

The destination file type to which the file is downloaded. The

Configuration Download

is selected, the

User’s Guide Addendum 23

is

possible field values are:

Software Image —

Boot Code —

Configuration Download

Server IP Address —

downloaded.

Source File Name —

Destination File Name —

www.dell.com | support.dell.com

The possible field values are:

Running Configuration —

Startup Configuration —

User Defined Backup Configuration —

Configuration file, and overwrites it.

ew File Name —

N

destination file.

NOTE: The image file overwrites the non-active image. It is recommended to designate that

the nonactive image will become the active image after reset, and then to reset the device
following the download. During the Image file download a dialog box opens which displays
the download progress. The window closes automatically

Downloads the Image file.

Downloads the Boot file.

The Server IP Address from which the configuration files are

Indicates the configuration files to be downloaded.

The destination file to which the configuration file is downloaded.

Downloads commands into the Running Configuration file.

Downloads the Startup Configuration file, and overwrites it.

Downloads the user-defined Backup

Downloads a new backup configuration file can be specified as the

when the download is complete.

Uploading Files

The File Upload to Server page contains fields for uploading the software or the configuration

file to the TFTP server from the device. The Image file can also be uploaded from the File
Upload to Server page.
To open the File Upload to Server page:

1

Click

System →

24 User’s Guide Addendum

File Management →

File Upload

in the tree view.

Figure 3. File Upload to Server

TFTP —

HTTP —

Firmware Upload —

selected, the

Configuration Upload —

the

Active Image Upload

Server IP Address —

Enables initiating an image upload via the TFTP server.

Enables initiating an image upload via the HTTP or HTTPS server.

The Firmware file is uploaded to the HTTPS server. If

Configuration Upload

fields are grayed out.

The Configuration file is uploaded. If

Active Image Upload

fields are grayed out.

The TFTP Server IP Address to which the Software Image is uploaded.

Destination File Name (1-159 Characters) —

which the file is uploaded.

Configuration Upload

Server IP Address —

The TFTP Server IP Address to which the Configuration file is uploaded.

Destination File Name (1-159 Characters) —

the file is uploaded.

Transfer File Name —

The software file to which the configuration is uploaded. The possible

field values are:

Running Configuration —

Uploads the Running Configuration file.

Firmware Upload

Configuration Upload

is selected,

Indicates the Software Image file path to

Indicates the Configuration file path to which

is

User’s Guide Addendum 25

Startup Configuration —

Uploads the Startup Configuration file.

List of User Defined Configuration Files —

NOTE: This list of user-defined configuration files only appears if the user created backup

configuration files. For example, if the user copied the running configuration file to a user-defined
configuration file called BACKUP-SITE-1, this list appears on the File Upload to Server page and the
BACKUP-SITE-1 configuration file appears in the list.

www.dell.com | support.dell.com

Uploads a user-defined configuration file.

26 User’s Guide Addendum