NetComm NP2624M User Manual

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Contents

1.3 Initial set up for management .................................................................................................... 6

1.4 LED indicators information ........................................................................................................ 9

2. Web Management Function ...........................................................................................................10

2.1. Web Management Home Overview ...................................................................................... 10

2.2. Port status ............................................................................................................................. 11

2.3. Port Statistics ........................................................................................................................ 13

2.4. Show MAC Table ....................................................................................................................15

2.5. Administrator ......................................................................................................................... 16

2.6. TFTP Update Firmware ..........................................................................................................54

2.7. Conﬁguration Backup ............................................................................................................ 55

2.8. Reset System ........................................................................................................................ 56

2.9. Reboot ...� 56

2.10. Event Logging ...................................................................................................................... 56

3. Console – Boot Loader .................................................................................................................. 57

3.1 1K X modem Firmware update ..............................................................................................58

3.2 TFTP Firmware update .......................................................................................................... 59

3.3 Set IP Address ....................................................................................................................... 59

3.4 Diagnose Sdram ....................................................................................................................60

4. Out-of-band Terminal mode management ...................................................................................... 61

4.1 Main Menu .............................................................................................................................62

4.2 Switch Static Conﬁguration .................................................................................................... 63

4.3. Protocol Related Conﬁguration ............................................................................................. 89

4.4. Status and Counters ...........................................................................................................104

4.5. Reboot Switch .................................................................................................................... 107

4.6. TFTP Update Firmware .......................................................................................................108

5. Application Examples .................................................................................................................... 110

5.1. VLAN application used with switch ...................................................................................... 110

5.2. Trunking Application used with switch ................................................................................. 112

5.3. “Single IP – Agent mode” application used with switch ........................................................ 112

5.4. “Single IP - Stacking mode” application used with switch ................................................... 117

5.5 Compatibility on Virtual Server and “Single IP” .................................................................... 122

Appendix A: Glossary of Terms ......................................................................................................... 124

Appendix B: Cable Information .......................................................................................................... 130

Appendix C: Registration and Warranty Information ........................................................................ 132

1. Introduction ....................................................................................................................................... 3

1.1 Unpacking ................................................................................................................................ 4

1.2 Installation .................................................................................................................................�

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1. Introduction

The NP2624M switch is a high performance web-managed SNMP Layer 2 switch that provides users with 24 x 10/100Mbps Ethernet and 2 x 1000Mbps Gigabit ports. This Switch has SNMP management and remote control capabilities such as “Web Cluster”. The Gigabit module, which can be copper or ﬁbre media, supports 1000BASE-SX, 1000BASE-LX or 1000BASE-T, allowing users to increase their network response time at gigabit speeds and with great ﬂexibility. An RS-232 serial port provides an easy way for to install and set-up the Switch.

Non-blocking and maximum wire speed performances are designed on all ports. The Switch not only supports Auto-Negotiation, but also Auto-MDIX function on all switched 24 x 10/100Mbps RJ45 ports and two Gigabit Copper ports in both half or full duplex mode. The Auto-MDIX function makes it convenient for the user, because it eliminates cabling on straight-line or cross-line issues.

The NP2624M switch provides a convenient way to operate layer 2 management through a web browser. The User-friendly drop-down menus allow the user to easily learn, control and monitor the Switch. It supports not only traditional SNMP function, but also RMON 1,2,3,9 groups for advanced network analysis. A new management tool called “Single IP” provides the administrator an access right to enter the private IP domain through a single real IP. Using this management tool, a network manager can remotely control far-side servers in a private IP domain.

The Switch also supports both Port-based and Tag-based VLANs. To increase bandwidth application, it supports 7 groups with up to 4 ports Trunk, and moreover, these trunk ports offer a fail-over function and provide back up when one or more ports malfunction. A stacking mode is introduced here to enhance the ability of VLAN. An integrated UI not only displays the link status of the stacking sets, but also provides an easy way to set up the VLAN.

Total front access design with full LED status display provide easy installation, inspection and maintenance in rack mount environments. An additional LED display of the fan status allows for quick diagnosis of any over-heating.

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1.1 Unpacking

Open the shipping carton of the Switch and carefully unpack its contents, the carton should contain the following items:

• One NP2624M port Fast Ethernet Layer 2 Switch.

• One Mounting Kit including 2 mounting brackets and screws.

• Four rubber feet with adhesive backing.

• One AC power cord.

• One RS-232 cable.

• One CD containing this User Guide.

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1.2 Installation

You can use the following guidelines when choosing a place to install the Switch.

• The surface must support at least 3 kg. Do not place heavy objects on the Switch.

• You must be able to visually inspect the power cord and AC power connector.

• Ensure proper heat dissipation by making sure there is adequate ventilation around the Switch.

Desktop or Shelf Installation:

When installing the Switch on a desktop or shelf, the rubber feet included with the device should attached ﬁrst. Attach these cushioning feet on the bottom at each corner of the device. Allow adequate space for ventilation between the device and the objects around it.

Rack Installation:

The NP2624M switch can be mounted in an ELA standard-sized, 19-inch rack, which can be placed in a wiring closet with other equipment. To install, attach the mounting brackets on the switch side panels (one on each side) and secure them with the screws provided. Then, use the screws provided with the equipment rack to mount the switch on the rack.

Power on:

The NP2624M switch can be used with an AC power supply 100-240V AC, 50-60Hz. The AC power connector is located at the rear of the unit. The switch’s power supply will adjust to the local power source automatically and may be turned on with all or none of the LAN segment cables connected.

After the power switch is turned on, the LED indicators should respond as follows:

• All LED indicators will momentarily blink. This blinking of the LED indicators represents a reset of the system.

• The power LED indicator will blink while the Switch loads onboard software and performs a self-test. After approximately 20 seconds, the LED will light again to indicate the switch is in a ready state.

• The Speed, Link/Activity LED indicator may remain ON or OFF depending on every port’s situation.

• The fan LED will switch off if the fan is working normally. The LED goes RED if the fan has stopped or failed.

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1.3 Initial set up for management

There are two methods of management; one is out-of-band management, where you connect your PC to the switch through an RS232 cable. The other method is in-band-management, where you also connect your PC to the switch, but do so through an Ethernet network either locally or remotely, or simply directly connect your PC and the switch with an Ethernet cable. Before you activate the management function in the Switch, you should read the instructions below carefully to ensure you can access the switch through your PC.

1.3.1 Out-of-band Terminal Mode Management through RS-232

Step 1: Set Hyper Terminal parameters on your PC

Firstly, turn on your PC and execute a terminal mode program. For example, if you are in a Microsoft Window environment, you may choose “Hyper Terminal” from programs that are listed for communication.

Open a New Connection using COM1 (or the port on your computer that you are going to connect the Switch to) and select the following port settings:

Bits Rate per second = 57600

Data Bits = 8

Parity = None

Stop Bit = 1

Flow Control = None

Step 2: Access your Switch

After setting the above parameters on your PC, connect your switch device with the RS-232 cable provided and turn the switch on. After the switch runs its self-test, the device should respond and ask you to enter the username and password. If the switch had already booted, press the enter key to display the login screen. Type the default value for the username and password to proceed, the default username is “admin” and default password “admin”. To learn more about the operation of the Switch in this mode, refer the instructions in chapter 4 of this manual.

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1.3.2 In-band Management through Ethernet

In addition to terminal mode operation, the NP2624M switch also supports in-band management through a web browser. This function is much more user-friendly than terminal mode and can be performed either locally or remotely through Ethernet.

Before you can access the switch:

1. You have to know the IP Address and Subnet Mask of both your switch and your PC. The default value of the IP Address and Subnet Mask within the switch can be retrieved through terminal mode operation described in chapter 4 and the IP Address and Subnet Mask of your PC can be found in your PC operating system.

2. In general, within a network, the members in the same network domain must have the same Subnet IP unless there are routers between them or members in the same network domain can’t talk to each other. Ensure that all users in the same domain have different IP Addresses on the same Subnet Mask.

3. If there is a DHCP server in the network domain, ensure that the DHCP function is enabled in both your PC and the switch, then save the setting and reboot the switch (power-off-and–on once). The DHCP server and its protocol will automatically assign an IP address and related IP Subnet Mask and Default gateway. This allows you to execute your web browser in your PC and simply type “http:// IP-Address-of-switch” to access the switch through Ethernet or over the Internet. If there is no DHCP server in the network, you must follow the steps instructed below:

4. Webpage login will prevent attacks from hackers. If a user fails to correctly login 3 times, http authentication will reject any http request for 3 minutes.

Connecting without a DHCP server

When there is no DHCP server in your network domain, you must ensure that the PC or switch have different IP Addresses and same Subnet Mask. Below, are the steps to modify the IP conﬁguration of the switch to match the domain requirement of the PC:

Step 1: Get the IP conﬁguration information in your PC.

Step 2: Get IP conﬁguration value used for switch from your network manager.

Get an IP Address for your switch, the IP Subnet Mask, and the default gateway IP address (if needed) from your network manager.

Step 3: Modify the IP conﬁguration value within the switch to match the rule

In the step 3, you must use the data from step 2 to modify the default values within the switch. To achieve this, use terminal mode operation mentioned as described in 1.3.1 above. After modifying the IP address, Subnet Mask, and Default Gateway in the switch, save the setting and execute the browser program with “http:// IP_Address_ of_ switch”. The login dialog box will be displayed. Type in the user name and password to proceed. Refer to the instructions in chapter 3 for more information.

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1.3.3 Telnet management

In addition to local terminal mode operation, the NP2624M switch supports remote management through Telnet over a network or the internet without a web browser. In this mode, the user has to enter the same settings as required in in-band management to the IP Conﬁguration before executing the Telnet program. Again, after properly setting the switch, save the settings and connect your Ethernet cable from your PC to any port of the Switch. Then you simply type the following at the command line to access the switch:

Telnet IP_Address_of_Switch

The following window appears. Follow the prompts and type in the “username” and “password” to proceed. Refer to the instructions in chapter 3 of this manual for more information.

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1.4 LED indicators information

There are many LEDs on the front panel of switch. After the initial power on, these LEDs will reﬂect the current status within the switch as explained below:

There is one power LED on the left side of the front panel. When power is applied, it turns green. Below it is a Diagnostic LED which will blink whilst conducting power-on diagnostics. There are two more FAN status LEDs beside the power LEDs. The upper one indicates the left fan status and the lower one indicates the right fan status. These will turn RED if a fan has stopped or is malfunctioning. Otherwise these LEDs will switch off when the fans are working normally.

Each of the RJ-45 10/100Mbps connectors has two LEDs built-in to its upper corners. The left one indicates the link status and activity, while the right one indicates the speed.

The LEDs for the optional Gigabit module are somewhat different. The upper yellow LED indicates a 10Mbps LINK, the middle green LED indicates a 100Mbps LINK, but for 1000Mbps, or Gigabit, both upper and middle LEDs are lit (i.e. when a Gigabit port is linked with another Gigabit port).

LED Color Status

Solid Blinking

Power

Green Turn solid green when

power is applied to this device.

N/A

DIAG

Green Successful diagnostic. During power on

diagnostics

FAN

Red Left or Right side fan

fail.

N/A

LINK/ACT

Green Successful connection

with Fast Ethernet.

Sending, receiving or collision packets

10/100M

Green Successful connection

with 100Mbps Fast Ethernet.

N/A

Vanish Successful connection

with 10Mbps Fast Ethernet.

N/A

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2. Web Management Function

2.1. Web Management Home Overview

The ﬁrst page you will see after login to the switch via a web browser is the Web Management page.

This page will display the basic switch and module information. All information displayed in these ﬁelds is read-only. That is, the user cannot modify the contents of the ﬁelds. The ﬁelds are described below:

Switch Information

Description: Displays the name of device type.

MAC Address: The unique hardware address assigned by

manufacturer (default).

Firmware Version: Displays the switch’s ﬁrmware version.

ASIC Version: Displays the switch’s ASIC version.

The image of the switch at the top of the page indicates the whether the port is connected. Click on the menu items on the left of the screen to display more information.

The following sections give an explanation of each function.

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2.2. Port status

This page provides current status of every port and the negotiation result.

State: Displays the port status: On or Down. “Unlink” will

be treated as “off”.

Link Status: Displays the link status. Down means “No Link”, Up

means “Link”.

Auto Negotiation: Displays the auto negotiation mode: auto/force/

Nway-force.

Speed status: Displays the speed, port 1- 24 are 10/100Mbps, Port

25-26 are 10/100/1000Mbps.

Duplex status: Displays full-duplex or half-duplex mode.

Flow Control: Full: Displays the ﬂow control is enabled or disabled

in full mode.

Half: Displays the backpressure is enabled or

disabled in half mode.

Rate Control: Displays the rate control setting.

Ingr: Displays the port effective ingress rate of user

setting.

Egr: Displays the port effective egress rate of user

setting.

Port Security: Displays the port security is enabled or disabled.

Conﬁg: Displays the state of user setting.

Actual: Displays the negotiation result.

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2.2.1 Single port counter and status

The user can also click any port directly on the front panel of the Home Page to get single port status which is shown below.

There is a ﬂow rate historical chart on the right. The user can track the ﬂow rate of this port for the last 60 hours. Changing the scale will re-calculate the chart.

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2.3. Port Statistics

Statistics pages are provided to monitor network trafﬁc. They are: Port Summary, RMON Statistics(1), RMON Statistics(1) Graph, RMON Statistics(2).

The above information provides a summary of the switch’s current status, including on/off state, link status, good or bad packets of transmitting and receiving, packets of transmitting abort, packets of collision and drop packets.

The following pages provide the statistics of RMON 1,2,3,9 groups. The ﬁrst part collects the information about packets and frame size within the ranges of 64, 65-127, 128-255, 256-511, 5121023, and 1024-1518 bytes, the total received packets and the total receives bytes.

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The second part collects the information about drop events, broadcast packets, multicast packets, alignment errors, undersize packets, oversize packets, fragments, jabbers and collisions.

Press “Reset” button to clear the counter.

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2.4. Show MAC Table

The following information provides a table of the current MAC address that the switch has learned.

Press “Prev” or “Next” button to browse previous 50 or next 50 items. The “Top” button will re-list the table from the ﬁrst MAC.

The table can be sorted by each of the headings by clicking the header on the top of table. For instance, clicking the “MAC” on the top of table will refresh the table by the index of “MAC”.

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2.5. Administrator

There are many management functions that can be set or performed if you click on Administrator on Home Page, including:

• IP and Management mode

• Switch settings

• Console port information

• Port conﬁguration

• Trunking

• IGMP and MAC Filter

• VLAN conﬁguration

• Rapid Spanning tree

• Port Mirror

• SNMP

• Security Manager

• 802.1x Conﬁguration

• Ping

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2.5.1. IP and Management mode

The user can modify the switch IP Settings by entering the new values and clicking the “apply” button to conﬁrm (save) these settings. Then reboot the switch and the new IP conﬁguration values will be activated.

The Management mode indicates which role this switch is currently playing. “Agent Slave” means it is treated as a normal switch. “Agent Master” means the “Single IP” is activated and the switch is treated as agent manager. “Stacking Slave” is used only when this switch is going to be a member of stacking set. This setting will force the switch to activate spanning tree protocol and some VLAN settings in preparation for stacking switches. “Stacking Master” also does the same tasks but it plays the role of manager of the stack. Only the “Stacking Slave” can be added into the members of a stacking set under one “Stacking master”. The default management mode is “Agent Slave”.

The extra “Agent IP” setting is necessary for the “Single IP” management. It deﬁnes the IP and the subnet mask the master switch will be assigned, which are in the same IP domain as the managed hosts’ one.

The user can conﬁne the “Single IP” function to local management by assigning the agent IP to the same one as the switch’s IP. Different from original IP forwarding method, it will not increase the loading of switch.

“Agent IP” setting and “Agent management” in the main menu will not show up if the agent mode is set as “Slave”.

NOTE: If any of the values are changed in this screen, reboot is necessary.

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2.5.2 Switch Setting

2.5.2.1 Advanced

MAC Address Age-out Time: Type the number of seconds that an inactive MAC

address remains in the switch’s address table. The valid range is 300~765 seconds. Default is 300 seconds.

Max bridge transit delay bound control: Limits the packets queuing time in switch. If

enabled, the excess packets will be dropped. These valid values are 1 sec, 2 sec, and 4 sec and off. Default is 1 seconds.

NOTE: Make sure “Max bridge transit delay bound control” is enabled

before “Enable Delay Bound”, because “Enable Delay Bound” only works under “Max bridge transit delay bound control”.

Enable Delay Bound: Limit the low priority packets queuing time in

switch. Default Max Delay Time is 255ms. If the amount of time a low priority packet stays in the switch exceeds the Max Delay Time, it will be sent.

The valid range is 1-255ms.

Broadcast Storm Filter: To conﬁgure broadcast storm control, enable it

and set the upper threshold for individual ports. The threshold is the percentage of the port’s total bandwidth used by broadcast trafﬁc. When broadcast trafﬁc for a port rises above the threshold you set, broadcast storm control becomes active. The valid threshold value is 5%, 10%, 15%, 20%, 25% and off.

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Priority Queue Service settings:

First Come, First Serve: The sequence of packets sent is depending on the

arrival order.

All High before Low: The high priority packets are sent before the low

priority packets.

WRR: (Weighted Round Robin) Select the preference given

to packets in the switch’s high-priority queue. These options represent the number of high priority packets sent before one low priority packet is sent. For example, 5 High:2 Low means that the switch sends 5 high-priority packets before sending 2 low- priority packets.

QOS Policy: High Priority Levels: 0~7 priority level can be

mapped to a high or low queue.

2.5.2.2 Miscellaneous Configuration

Collisions Retry Forever: Disable – In half duplex, the collision-retry

maximum is 48 times and packet will be dropped if collisions still happen.

Enable – In half duplex, there is no collision-retry

limit. Retry will be attempted indeﬁnitely.

Hash Algorithm: Choose algorithms, CRC-Hash or DirectMap, to

maintain MAC address table.

IFG Compensation: Enable or disable inter-frame gap (IFG)

compensation.

802.1x Protocol: Enable or disable 802.1x protocol.

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2.5.3 Console Port Information

The Console is a standard UART interface which allows you to communicate with the Switch via a Serial Port. The user can use windows HyperTerminal program to link the switch.

Bits per seconds: 57600

Data bits: 8

Parity: none

Stop Bits: 1

Flow control: none

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2.5.4 Port Controls

The user may modify or change mode operation in this page.

Port: Select a port.

State: User can disable or enable this port control.

Negotiation: User can set auto negotiation mode to Auto, Nway

(specify the speed/duplex on this port and enable auto-negotiation), Force of per port.

Speed: User can set 100Mbps or 10Mbps speed on

Port1~Port24.

User can set 1000Mbps, 100Mbps or 10Mbps speed

on Port25~Port26 (depends on module card mode).

Duplex: User can set full-duplex or half-duplex mode per

port.

Flow Control: Full: User can set ﬂow control function to enable or

disable in full mode.

Half: User can set backpressure to enable or disable

in half mode.

Rate Control: Port1 ~ port 24, supports by-port ingress and egress

rate control. For example, assume port 1 is 10Mbps, users can set its effective egress rate at 1Mbps and ingress rate at 500Kbps. The device will perform ﬂow control or backpressure to conﬁne the ingress rate to meet the speciﬁed rate.

Ingress: Type the port effective ingress rate. The valid range

is 0 ~ 1000. The unit is 100K.

0: disable rate control.

1 ~ 1000: valid rate value

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Egress: Type the port effective egress rate. The valid range is

0~1000. The unit is 100K.

0: disable rate control.

1 ~ 1000: valid rate value.

Priority: Enable or disable the port priority function. There

are two priorities (high or low) provided if port priority is enabled.

Security: A port in security mode will be “locked” without

permission of address learning. Only the incoming packets with SMAC already existing in the address table can be forwarded normally. Users can disable the port from learning any new MAC addresses, then use the static MAC addresses screen to deﬁne a list of MAC addresses that can use the secure port.

Enter the settings, then click Apply button to change on this page.

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2.5.5 Trunking

The Link Aggregation Control Protocol (LACP) provides a standardized means for exchanging information between Partner Systems on a link to allow their Link Aggregation Control instances to reach agreement on the identity of the Link Aggregation Group to which the link belongs, move the link to that Link Aggregation Group, and enable its transmission and reception functions in an orderly manner. In conclusion, Link aggregation lets you group up to eight consecutive ports into a single dedicated connection. This feature can expand bandwidth to a device on the network. LACP operation requires full-duplex mode, more detail information refers to IEEE 802.3ad

2.5.5.1 Aggregator setting

System Priority: A value used to identify the active LACP. The switch

with the lowest value has the highest priority and is selected as the active LACP. Valid value is 1~65535.

Group ID: There are seven trunk groups to provide conﬁgure.

Choose the “group id” and click “Get”.

LACP: If enabled, the group is LACP static trunking group.

If disabled, the group is local static trunking group. All ports support LACP dynamic trunking group. If connecting to the device that also supports LACP, the LACP dynamic trunking group will be created automatically.

Work ports: Allows for a maximum of four ports to be aggregated

at the same time. If LACP static trunking group, exceeds ports is standby and able to aggregate if work ports fail. If local static trunking group, the number must be as same as the group member ports.

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Select the ports to join the trunking group. Allow a maximum of four ports to be aggregated at the same time.

If LACP is enabled, you can conﬁgure LACP Active/Passive status in each port on State Activity page.

Click Apply.

2.5.5.2 Aggregator Information

When you are setting LACP aggregator, related information will be displayed.

1. This page displays no group active. LACP is not working.

2. This page displays Static Trunking groups.

3. This page displays Actor and Partner trunking in one group.

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2.5.5.3 State Activity

Active (select): The port automatically sends LACP protocol packets.

N/A (no select): The port does not automatically send LACP protocol

packets, and responds only if it receives LACP protocol packets from the opposite device.

1. A link that has either two active LACP ports or one active port can perform dynamic LACP trunking. A link has two N/A LACP ports will not perform dynamic LACP trunking because both ports are waiting for an LACP protocol packet from the opposite device.

2. If you are active LACP’s actor, when you select trunking port, the active status will be created automatically.

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2.5.6 Filter Database

2.5.6.1. IGMP Snooping

The NP2624M switch supports multicast IP. IGMP protocol can be enabled on this web page, and IGMP snooping information is displayed on this page. All multicast groups, VIDs and member ports are displayed in the list. IP multicast addresses range from 224.0.0.0 through

239.255.255.255.

The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet Protocol (IP) suite.

IGMP can manage the multicast trafﬁc if the members (switches, router or other network devices) of groups support IGMP. With IGMP enabled, the member ports will detect IGMP queries, report packets and manage the IP multicast trafﬁc through the switch.

IGMP have three fundamental types of message as follows:

Message Description

Query A message is sent from the queries (IGMP router

or switch) asking for a response from each host belonging multicast group.

Report A message is sent by a host to the queries to indicate

that the host wants to be or is a member of a given group indicated in the report message.

Leave Group A message is sent by a host to the queries to indicate

that the host has quit being a member of a speciﬁc multicast group.

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2.5.6.2. Static MAC Address

When you add a static MAC address, it remains in the switch’s address table, regardless of whether the device is physically connected to the switch. This saves the switch from having to re-learn a device’s MAC address when the disconnected or powered-off device is active on the network again.

1. At the main menu, click Administrator >Filter Database >Static MAC Address.

2. In the MAC address box, enter the MAC address.

3. In the Port Number box, enter a port number.

4. If tag-based (IEEE 802.1Q) VLANs are set up on the switch, static addresses are associated with individual VLANs. Type the VID (tag-based VLANs) to associate with the MAC address.

5. Click the Add.

6. Click the “Prev 50” will list the previous 50 MAC addresses.

7. Click the “Top” will refresh the list from the ﬁrst entry.

8. Click the “Next 50” will list the next 50 MAC addresses.

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2.5.6.3 MAC filtering

MAC address ﬁltering allows the switch to drop unwanted trafﬁc. Trafﬁc is ﬁltered based on the destination addresses.

1. In the MAC Address box, enter the MAC address that you want to ﬁlter.

2. If tag-based (802.1Q) VLAN are set up on the switch, in the VLAN ID box, type the VID to associate with the MAC address.

3. Click the Add.

4. Choose the MAC address that you want to delete and then click the Delete.

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2.5.7. VLAN configuration

A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain. It allows you to isolate network trafﬁc so only members of the VLAN receive trafﬁc from the same VLAN members. Basically, creating a VLAN from a switch is logically equivalent to reconnecting a group of network devices to another Layer 2 switch. However, all the network devices are still plugged into the same switch physically.

The NP2624M switch supports port-based, 802.1Q (tagged-based) and protocol-base VLAN in web management page. In the default conﬁguration, VLAN support is disabled.

Support Port-based VLAN

Packets can only be broadcast among members of the same VLAN group. Note all unselected ports are treated as belonging to another single VLAN. If the port-based VLAN is enabled, the VLANtagging is ignored.

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Support Tag-based VLAN (IEEE 802.1Q VLAN)

Tagged-based VLAN is an IEEE 802.1Q speciﬁcation standard. Therefore, it is possible to create a VLAN across devices from different switch venders. IEEE 802.1Q VLAN uses a technique to insert a “tag” into the Ethernet frames. Tag contains a VLAN Identiﬁer (VID) that indicates the VLAN numbers.

Support Protocol-based VLAN

In order for an end station to send packets to different VLANs, it has to be either capable of tagging packets it sends with VLAN tags or attached to a VLAN-aware bridge that is capable of classifying and tagging the packets with a different VLAN ID based not only on the default PVID but also other information about the packet, such as the protocol.

The NP2624M switch will support protocol-based VLAN classiﬁcation by means of built-in knowledge of layer 2 packet formats used by selected popular protocols, such as Novell IPX and AppleTalk’s Ether Talk, and some degree of programmable protocol matching capability.

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2.5.7.1. Port Based VLAN

1. Click Add to create a new VLAN group.

2. Enter the VLAN name, group ID and select the members for the new VLAN.

3. Click Apply.

4. If there are many groups that over the limit of one page, you can click the “Next Page” to view other VLAN groups.

NOTE: If trunk groups exist, they will be displayed (eg: TRK1, TRK2…) in

select menu of ports. These can also be configured on the VLAN.

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2.5.7.2. 802.1Q VLAN

In this page, the user can create a Tag-based VLAN.

256 VLAN groups can be conﬁgured. If 802.1Q VLAN is enabled, then all ports on the switch will belong to the default VLAN (VID is 1). The default VLAN cannot be deleted.

Basic

Create a VLAN and add tagged member ports to it.

1. From the main menu, click Administrator >VLAN conﬁguration, click Add and the following page will be displayed.

2. Type a name for the new VLAN.

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3. Type a VID (between 2-4094). The default is 1.

4. Choose the protocol type.

The NP2624M supports 802.1v with the implementation of Port-and-Protocol-based

VLAN classiﬁcation. Users can combine the ﬁeld “Protocol VLAN” and the ﬁeld of the port number to form a new VLAN group.

NOTE: IEEE 802.1v allows a user to classify the packets through an untagged

port. There are two possible strategies of the 802.1v support: Portbased VLAN and Port-and-Protocol-based VLAN. Both are supported in the NP2624M. Users set the VID to mark the packet from the untagged port and then the packet can be scheduled by the way of the IEEE 802.1q.

5. From the Available ports box, select ports to add to the switch and click “Add >>”. If the trunk groups exist, they will be displayed here (eg: TRK1, TRK2…) and you can conﬁgure it as a member of the VLAN if necessary.

6. Click Next. The following page will be displayed.

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7. Use this page to set whether the outgoing frames are VLAN-Tagged frames or not. Then click Apply.

Tag: outgoing frames with VLAN-Tagged.

Untag: outgoing frames without VLAN-Tagged.

Port VID

From the main Tag-based (IEEE 802.1Q) VLAN page, click Port VID Settings to conﬁgure port VID settings.

Port VID (PVID) Set the port VLAN ID that will be assigned to

untagged trafﬁc on a given port. This feature is useful for accommodating devices that you want to participate in the VLAN but do not support tagging. The NP2624M switch allows each port to set one PVID, the range is 1~255, default PVID is 1. The PVID must as same as the VLAN ID that the port belong to VLAN group, or the untagged trafﬁc will be dropped.

Ingress Filtering Ingress ﬁltering lets frames belonging to a speciﬁc

VLAN to be forwarded if the port belongs to that VLAN. The NP2624M switch has two ingress ﬁltering rules as follows:

Ingress Filtering Rule 1: A forward only packet with

VID matching this port’s conﬁgured VID.

Ingress Filtering Rule 2: Drop Untagged Frame.

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2.5.8. Rapid Spanning Tree

We provide Both Rapid-Spanning-Tree-Protocol (RSTP) and Spanning-Tree Protocol (STP).

The Spanning-Tree Protocol (STP) is a standardized method (IEEE 802.1D) for avoiding loops in switched networks. Enable STP to ensure that only one path at a time is active between any two nodes on the network.

The Rapid-Spanning-Tree-Protocol (RSTP) is a more advanced Protocol than STP. RSTP can shorten spanning tree convergent time if your network topology changes. For the default, the switch will use RSTP. If the switch receives a STP’s BPDU, the switch will degrade to STP.

You can enable STP (Spanning-Tree Protocol) using the web management’s switch setting advanced item, select enable Spanning-Tree Protocol. We recommend that you enable STP on all switches to ensure a single active path on the network.

1. You can view spanning tree information about the Root Bridge on the following screen:

2. You can view spanning tree status about the switch on the following screen:

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3. You can also set new values for RSTP parameters, then click the Apply button to modify

Parameter Description

Priority You can change the priority value. A value is used

to identify the root bridge. The bridge with lowest value has the highest priority and is selected as the root. Enter a number 1 through 65535.

Max Age You can change the Max Age value. The number of

second bridge waits without receiving Spanning-Tree Protocol conﬁguration messages before attempting a reconﬁguration. Enter a number 6 through 40.

Hello Time You can change the Hello time value. The number

of seconds among the transmission of Spanning-Tree Protocol conﬁguration messages. Enter a number 1 through 10.

Forward Delay Time You can change the forward delay time. The number

of seconds a port waits before changing from its Spanning-Tree Protocol learning and listening states to the forwarding state. Enter a number 4 through 30.

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4. The following parameters can be conﬁgured on each port , click the Apply button to modify

Parameter Description

Port Number Select the port number.

Path Cost Speciﬁes the path cost of the port that the switch uses

to determine which ports are the forwarding ports. The lowest number is forwarding ports, the range is 1-65535 and default value base on IEEE802.1D

10Mb/s = 50-600 100Mb/s = 10-60 1000Mb/s = 3-10

Port Priority You can make it more or less likely to become the

root port, the range is 0-255, and default setting is

128.

The lowest number has the highest priority.

Edge Port Edge Port is a port connected to a device that knows

nothing about STP or RSTP. Usually, the connected device is an end station. Edge Ports will keep in forwarding state and skip the listening and learning state. When the link on the edge port is changed, the RSTP topology is not affected.

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2.5.9. Port Mirror

The Port Mirror is a method for monitoring trafﬁc in switched networks. Trafﬁc through ports can be monitored by one speciﬁc port. That is, trafﬁc going in or out monitored ports will be duplicated into an Analysis port.

Roving Analysis Mode: Press Space key to set mirror mode: Disable \Rx \Tx

\Both.

Analysis Port: This port can be used to see all monitored ports’

trafﬁc. You can connect analysis port to LAN analyser or netxray.

Monitored Port: The ports you want to monitor. All monitored port

trafﬁc will be copied to the analysis port. You can select a maximum of 25 monitor ports in the switch. Users can choose which port that they want to monitor in only one mirror mode.

If you want to disable the function, you must deselect monitor port.

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2.5.10. SNMP/Trap Manager

Any Network Management platform running the Simple Network Management Protocol (SNMP) can manage the switch, provided the Management Information Base (MIB) is installed correctly on the management station. The SNMP is a Protocol that governs the transfer of information between management station and agent.

1. System Options:

Use this page to deﬁne management stations as trap managers and to enter SNMP

community strings. Users can also deﬁne a name, location, and contact person for the switch. Fill in the system options data, and then click Apply to update the changes on this page.

Name: Enter a name to be used for the switch. Location: Enter the location of the switch. Contact: Enter the name of a person or organisation.

2. Community Strings

Community Strings serve as passwords and can be entered as one of the following:

RO: Read only. Enables requests accompanied by this

string to display MIB-object information.

RW: Read write. Enables requests accompanied by this

string to display MIB-object information and to set MIB objects.

3. Trap Manager

A trap manager is a management station that receives traps, the system alerts generated

by the switch. If no trap manager is deﬁned, no traps are issued. Create a trap manager by entering the IP address of the station and a community string.

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2.5.11 Security Manager

On this page, users can change username and password with following steps.

1. In User Name: Type the new username.

2. In Assign/Change password: Type the new password.

3. In Reconﬁrm password: Retype the new password.

4. Click Apply.

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2.5.12 802.1x Configuration

System Configuration

802.1x makes use of the physical access characteristics of IEEE802 LAN infrastructures in order to provide a means of authenticating and authorizing devices attached to a LAN port that has point-topoint connection characteristics, and prevent access to that port in cases where the authentication and authorization process fails.

To enable 802.1x, from Administrator \Switch setting \Advanced then ﬁll in the authentication server information:

Radius Server IP Address: The IP address of the authentication server.

Server Port: The UDP port number used by the authentication

server to authenticate.

Accounting Port: The UDP port number used by the authentication

server to retrieve accounting information.

Shared Key: A key shared between this switch and authentication

server.

NAS, Identiﬁer: A string used to identify this switch.

Perport Configuration

In this page, users can select the speciﬁc port and conﬁgure the Authorisation State.

Each port can select four kinds of Authorisation State:

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Fu: Force the speciﬁc port to be unauthorised.

Fa: Force the speciﬁc port to be authorised.

Au: The state of the speciﬁc port was determined by the

outcome of the authentication.

No: The speciﬁc port didn’t support 802.1x function.

Miscellaneous Configuration

In this page, users can change the default conﬁguration for the 802.1x standard:

Quiet Period: Used to deﬁne periods of time during which it will

not attempt to acquire a supplicant (Default time is 60 seconds).

Tx Period: Used to determine when an EAPOL PDU is to be

transmitted (Default value is 30 seconds).

Supplicant Timeout: Used to determine timeout conditions in the

exchanges between the supplicant and authentication server (Default value is 30 seconds).

Server Timeout: Used to determine timeout conditions in the

exchanges between the authenticator and authentication server (Default value is 30 seconds).

Max requests: Used to determine the number of re-authentication

attempts that are permitted before the speciﬁc port becomes unauthorized (Default value is 2 times).

Reauth Period: Used to determine a nonzero number of seconds

between periodic re-authentication off the supplications (Default value is 3600 seconds).

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2.5.13 Ping

The NP2624M switch provides a simpliﬁed ping function for users to check whether an IP is online or not.

Enter the IP Address and number of counts for the ping packet to send. Press “Apply” to continue next page.

This page will display the result of the pinging IP. It continues updating the “Reply Counts” to the ping packets that are sent. Users can interrupt the progress by clicking the “Stop” button.

If the reply counts remain zero after the webpage reload stops, it could mean that the pinged host of this IP does not exist.

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2.5.14 Single IP

The NP2624M switch provides a new management tool for a user to manage a group of LAN switches by an IP agent method. “Single IP” is the name, meaning that the administrator can access other network devices through one single IP device. There are two management modes: “Agent mode” and “Stacking mode”.

Unlike a router’s NAT (from virtual IP domain to real IP domain), single IP provides a reverse access (from real IP domain to virtual IP domain) using an IP-forwarding technology. With this IPagent method, the network administrator can remotely control his far-side hosts without being there, accessing the private domain hosts through the agency of one real IP switch with a “Single IP”.

A maximum of 32 sets of information of network devices can be stored in the single IP switch and 16 sets in a stacking switch. Basically these network devices should provide http:// or telnet service for the single IP switch to forward those protocol packets; meanwhile SNMP protocol can be also passed through if they support SNMP service.

Moreover, this single IP switch has no exclusiveness, meaning that administrator can group up network devices of any type (router, switch, server...) or brand without worrying their incompatibility.

However, for stacking switch, only the switches of the same model can detect each other and transfer information to their partner, so it won’t support other network devices in this instance. This is the major difference between single IP agent mode and stacking mode. Please read Chapter 5 for more information.

Web UIs of “Agent Management” and “Stacking Management” look similar. In these pages, users can add or delete managed network devices. If the user disables the IP agent function, that is, sets the management mode to “Agent Slave” or “Stacking Slave” in the IP setting webpage, this item will not show up in the main menu.

2.5.14.1 Agent Management

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Agent Control Port: The control port deﬁnes the speciﬁc TCP/UDP port

the single IP switch is listening, which the agent manager sends its command to. Agent manager use this speciﬁc port to tell the single IP switch to change the current forwarding target host. The range of available port number is 28000 ~ 30000. Ignore the default settings of the “Agent Control Port” unless the user has a special need for this protocol port, such as virtual server. The default port number is 28019.

Add/Edit/Delete : To add a member, enter the IP and name in “IP

address” and “Host Name”, then press “Add/Edit”. The new member will be listed on the left. To edit a member’s host name, select the member in the list and the IP and name will be shown on the right. Edit the name and then press “Add/Edit” to update the list. To remove a member, just select the member and press “Delete”

Launch Manager : This button launches the Stacking manager.

2.5.14.2 Agent Manager

A ﬂoating menu be displayed after clicking “Launch Agent Manager” in the agent management menu.

The agent manager holds 32+1 slots in the ﬂoating menu. The top slot (zero slot) displays the master switch IP and its relative location. “Remote Agent” means that the user comes from another IP domain than the managed ones, while “Local Agent” means that the user comes from the same IP domain as the managed ones.

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There are differences between “Remote Agent” and “Local Agent”. The “Local Agent”, referred to as “Local Single IP”, uses URL link method and the main browser window will directly jump to the target host. Since the URL of the web browser has changed, authentication will be requested once again when the new host is selected.

Due to switch loading, only one remote user can access the agent manager at a time. Other users will be rejected if someone has launched the agent manager ﬁrst. The switch will release the control of single IP access in 25 seconds after the previous user closes his agent manager. For “Local Single IP”, there is no restriction, but if a remote user has launched the agent manager in the same time, the local user is also denied.

NOTE: Commands from agent manager cannot pass over current

management level, meaning that, in cases where a slave host is a single IP switch with its agent function enabled, a user launching the slave host’s agent manager will find the agent manager is replaced by the slave’s one. Worse still, commands to pick the slave hosts will cause an unexpected forwarding error here.

We strongly recommend that a single IP switch should not activate the IP agent manager when it is a slave host of active master switch.

2.5.14.3 Stacking Management

Agent Control Port: The speciﬁc TCP/UDP port the single IP switch

is listening. See 2.5.14.1 Agent Management for details.

There are two ways to add the members: “Auto-discover” and “Manual”.

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Auto-discover method: Press “Find >>” and the found stackable switches

will be gathered in “Auto Discover List”. Select these found members and press “ << Add” to add the selected hosts to the list.

The searching range bases on Class C IP domain

within Agent IP. Changing the “Agent IP” in “Administrator/IP & Management Mode” will alter the search range. For example, if the Agent IP is set to 192.168.223.100, and then the auto-discover function will search for available switches in the range from 192.168.223.1 to 192.168.223.255.

Manual method: Users can add members manually. Fill up the “IP

Address” and “Host Name”, then press “Apply” to complete the addition of a new member.

Editing an existing member is also easy to do.

Simply select the host which needs to edited, the “IP address” and “Host Name” will appear. Then modify the “Host Name” for reference. For any IP that is not within the member list, the modiﬁcation will assume to add a new member. Press “Apply” to conﬁrm the modiﬁcation.

To delete an existing member, choose the host and

press “Delete”. Then the host will be removed from the list.

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Launch Manager: This button launches the Stacking manager.

For “Stacking mode”, there is an extra option

“VLAN Mode” for user to choose which type of VLAN the stacking switch will carry on. There are “802.1Q” and “Port-base” VLAN .

NOTE: In the case of the http:// authentication mechanism, the web

browser will always ask the administrator to input username and password when agent manager changes a new host. Typically, the web browser will keep the authentication key of the successful login host and pass it to the other WebPages. The single IP switch remains the URL of the master switch IP no matter how the agent manager has changed the forwarding host, the new host will still receive the same authentication key as the master switch when it requests the login authentication. If the new host has a different username and password from the master switch, authentication failure and hence reentry will be required.

It is strongly recommended that the administrator change the usernames and passwords of the managed hosts to the same ones as the master switch.

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2.5.14.4 Stacking Manager

This web UI provides not only the integrated VLAN management, but also a handy IP agent. The administrator can easily access other detail conﬁgurations in one individual switch of stacking set by clicking the hostname on the right side of this panel and jumping to its conﬁguration webpage.

Link Status

The ﬁrst page shows the current link status of all stacking members. Link-up port numbers will be highlighted. An off-line switch will dim to gray if it does not respond to the information request from the stacking master in a period of time. This characteristic provides an easy method of network diagnosis. The network administrator can check backbone connections of stacking switches at a glance from this panel.

VLAN SETUP

To conﬁgure the VLAN setting of the stacking switch, click “VLAN” to bring up the VLAN conﬁguration panel.

There are two default VLANs existing in stacking switches.

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As seen above, the VLAN name “ DEFAULT” and VID “ 1” is standard setting for general Tag VLAN , and all ports are added as untagged ports; The other VLAN “ 4091”, also called a “Stacking Tag VLAN”, is a unique setting for this type of stacking. All Giga ports are set to tag members to form a VLAN connection channel.

WARNING: Stacking Tag VLAN is highly restricted. Incorrect operation can ruin

the connection of stacking switches. Correct use of the Stacking Tag VLAN will be discussed in the next section.

Add a VLAN

To Add a new VLAN, press “ Add” in the VLAN Panel. Two prompts will ask the user to input VLAN name and VLAN ID.

After input, users can choose the VLAN member in the Stacking Manager panel by clicking the designated port. Colour cycling from blue, yellow to black means that the port is set to untagged port, tagged port or no member. When ﬁnished, press “ Apply” to submit the changes.

It is always wise to remember that the Giga ports of each member switch are set to tagged port and keep at least one member port in the master switch.

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The stacking switches interchange VLAN information through the Giga ports which are set to tagged members by “Stacking Tag VLAN”. New VLANs should keep their Giga ports tagged. Since the master switch holds all VLAN group information, the master switch should have the right to access the new VLAN by adding at least one Giga port to its tagged member. An exclusion of all master switch ports leads to unmanageability on this VLAN, for the master switch has no such VLAN in its internal table.

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Edit or Delete a VLAN

To edit an existing VLAN, just select the VLAN from the VLAN panel and modify the members in the Stacking Manager panel. Once done, press “ Apply” to submit the setting.

To delete a VLAN is also an easy task. Select the unwanted VLAN and press “Delete” to remove it.

NOTE: The “DEFAULT VLAN” and “Stacking Tag VLAN” are undeletable! A

error message will pop up to cancel the task. The Stack VLAN also cannot be edited.

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PVID SETUP

The default PVID value of all ports of 802.1Q VLAN is 1. Hence only the default VLAN ( PVID = 1 ) has all of its ports as members in the beginning.

The available PVIDs are based on the VLANs that the user created in the previous “VLAN” page.

1. Select the PVID to be modiﬁed and choose the ports for this PVID value.

2. Click “Apply” button to submit and a message ”Please wait” will be displayed.

3. When a message advising “Current setting is on …” is displayed, the task is completed.

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2.6. TFTP Update Firmware

The following menu options provide some system control functions to allow a user to update ﬁrmware and remotely boot the switch system:

1. Install TFTP program (such as Turbo98, or Cisco TFTP) and then execute.

2. Copy the updated ﬁrmware image.bin into TFTP server’s directory.

3. In web management select administrator—TFTP update ﬁrmware.

4. Download the new image.bin ﬁle by pressing <update ﬁrmware>.

5. After the update has completed, press <reboot> to restart the switch.

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2.7. Configuration Backup

2.7.1. TFTP Restore Configuration

Use this page to set the ftp server address. You can restore the EEPROM value from here, but you must restore the image in the ftp server, the switch will then download the ﬂash image back.

2.7.2. TFTP Backup Configuration

Use this page to set TFTP server IP address. You can save current EEPROM value from here, then go to the TFTP restore conﬁguration page to restore the EEPROM value.

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2.8. Reset System

To Reset the Switch to its default conﬁguration, click on the Reset button.

2.9. Reboot

To Reboot the Switch System, click on the Reboot button.

2.10. Event Logging

A history log is provided here to keep track of events occurring on the switch. This logs up to 100 events and then the latest event will overwrite the oldest one.

All records will be kept in ﬂash memory even after writing default, unless user clears the event log.

Press “Prev” or “Next” button will browse previous 25 or next 25 sequences. The “Top” button will re-list the table from the latest event. “Clear” button will clear all history.

Event logger displays the real time according to the time zone set by the user.

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3. Console – Boot Loader

Each time the switch restarts, the user can get some basic information from console (use Hyper terminal 57600 baud rate).

After switch tests are done, a 5-seconds countdown timer will prompt the user to press any key to enter the “User Menu”.

There are ﬁve functions in the menu:

1. start kernel: Back to switch system initiation and enter login.

2. kernel update from xmodem : Use 1k X modem to update ﬁrmware.

3. kernel update from tftp: Use TFTP to update ﬁrmware.

4. set ip address: A shortcut to setup switch IP and gateway.

5. diagnose sdram: A basic SDRAM diagnosis.

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3.1 1K X modem Firmware update

We provide the 1k X modem to update ﬁrmware from RS232. 1K X modem only works in 57600bps mode. So you must change baud rate to 57600bps to download ﬁrmware.

1. Select “2” to start 1K X modem ﬁrmware update.

2. When “CCCC…” is displaying on console, select Transfer /Send File.

3. Select the 1K Xmodem in the Protocol item, and browse for the image for updating. Press the Send button.

4. Start downloading the image ﬁle.

5. After the ﬁrmware has been downloaded, the switch will then automatically update it and then the switch will reboot.

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3.2 TFTP Firmware update

We provide the TFTP client to update ﬁrmware from Ethernet. The user has to ﬁrst install TFTP server on their PC and place the image in the download folder.

1. Press “3” to start TFTP update ﬁrmware.

2. Enter the Switch IP address and press “Enter” to accept default value.

3. Enter the TFTP Server IP address and press “Enter” to accept default value.

4. Enter the File name to download. Press “Enter” to accept default value and the TFTP download will begin and the ﬁrmware will be updated.

3.3 Set IP Address

A shortcut to set switch IP address and gateway before switch system initialization has also been provided. This saves time as the switch IP can be changed without the need to wait for the system to boot up and reconﬁgure.

1. Press “4” to start IP setup.

2. Enter the Switch IP address. Press “Enter” to accept the default value.

3. Enter the Mask. Press “Enter” to accept the default value.

4. Enter the Gateway IP address. Press “Enter” to accept the default value.

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3.4 Diagnose Sdram

We provide a basic diagnosis for a SDRAM test. It is important to verify hardware faults when a switch becomes unstable.

When the test is done, it will display the status and prompt the user to reset the switch.

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4. Out-of-band Terminal mode management

The NP2624M switch also provides a serial interface to manage and monitor the switch. Users can follow the Console Port Information provided online to use Windows HyperTerminal program to link to the switch.

Type the username and press enter and then type the password and press enter to login. The default username is “admin”; the default password is “admin ”.

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4.1 Main Menu

There are six items which can be selected:

Switch Static Conﬁguration: Conﬁgure the switch.

Protocol Related Conﬁguration: Conﬁgure the protocol function.

Status and Counters: Show the status of the switch.

Reboot Switch: Restart the system or reset switch to default

conﬁguration.

TFTP Update Firmware: Use TFTP to download a ﬁrmware image.

Logout: Exit the menu line program.

Control Keys

The following control keys are provided for this mode operation:

Tab: Move the cursor to next item.

Backspace: Move the cursor to previous item.

Enter: Select item.

Space: Toggle selected item to next conﬁgure.

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4.2 Switch Static Configuration

Control Keys

You can press the Tab or Backspace keys to choose an item, and press the Enter key to select an item.

Action Menu Line

<Quit>: Exit the conﬁguration page and return to the previous

menu.

<Edit>: Conﬁgure all items. When you have ﬁnished

conﬁguring the item, press Ctrl+A to return back to the action menu line.

<Save>: Save all conﬁgured values.

<Previous Page>: Return to previous page to conﬁgure.

<Next page>: Go to the next page to conﬁgure it.

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4.2.1. Port Configuration

This page allows you to change the status of every port.

Press the Space key to change the conﬁguration of each item.

InRate (100K/unit): User can set input rate control, which is 100K per

unit. The valid range is 0~1000.

0: disable rate control.

1~1000: valid rate value.

OutRate (100K/unit): User can set output rate control, which is 100K per

unit. The valid range is 0~1000.

0: disable rate control.

1~1000: valid rate value. Enabled: User can disable or enable this port control. “Yes” that mean the port is enabled.

“No” that mean the port is disabled. Auto: User can set auto negotiation mode to “Auto”,

“Nway_Force”, or “Force” per port. Spd/Dpx: User can set “100Mbps” or “10Mbps” speed on port

1~port 24. Set “1000Mbps”, “100Mbps” or “10Mbps” speed

on port25~port26 (dependant on optional Gigabit

module card), and set “full-duplex” or “half-duplex”

mode. Flow Control: Full: User can enable or disable full ﬂow control

function (pause).

Half: User can enable or disable half ﬂow control

function (backpressure).

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NOTE: Pressing “Save” will only save one page of configuration. If static

trunk groups exist, they will be displayed (eg: TRK1, TRK2…) after port 26, and you can configure them as above.

4.2.2. Trunk Configuration

This page allows the user to create a maximum of seven trunk groups. Users can arbitrarily select up to four ports from port 1~port 26 to build a trunk group.

1. Select <Edit> on the actions menu

2. Press space key to conﬁgure the member port of trunk group. You also have to set “Static” or “LACP” for the corresponding trunk group of TRK1~TRK7 item.

“Static” – the normal trunk.

“LACP” – this trunk group has link aggregation control protocol.

3. Press Ctrl+A to go back action menu line

4. Select <Save> to save all conﬁgure value.

5. If the TRK1~TRK7 are “Disabled”, the trunk group is deleted.

6. All ports in the same static trunk group will be treated as a single port. So when setting VLAN members and Port conﬁguration they will be toggled on or off simultaneously.

NOTE: If a VLAN group exists, all of the members of static trunk group must

be in the same VLAN group.

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4.2.3. VLAN Configuration

4.2.3.1. VLAN Configure

This page allows the user to set VLAN mode to port-based VLAN or 802.1Q VLAN or disable VLAN function.

NOTE: Changing the VLAN mode requires the switch to be restarted.

If the switch is set to 802.1Q VLAN, this page will allow the user to set PVID, ingress ﬁltering 1 and ingress ﬁltering 2.

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1. PVID (Port VID: 1~255): Type the PVID.

2. Ingress Filter 1 NonMember Pkt:

NonMember Pkt works the same as Ingress Filtering Rule 1 on the web interface.

Forwarding only packets with VID matching this port’s conﬁgured VID.

Press Space key to choose “forward” or to “drop” the frame not matching this port’s

conﬁgured VID.

3. Ingress Filter 2 UnTagged Pkt:

UnTagged Pkt works the same as Ingress Filtering Rule 2 on the web interface.

Drop untagged frame.

Press Space key to choose “drop” or “forward” the untagged frame.

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4.2.3.2. Create a VLAN Group

Create Port-Based VLAN

Create a port-based VLAN and add member/nonmember ports to it.

1. Select <Edit>.

2. VLAN Name: Type a name for the new VLAN.

3. Grp ID: Type the VLAN group ID. The group ID range is 1~4094.

4. Member: Press <Space> key to choose VLAN member. There are two types to select:

a. Member: the port is member port.

b. No: the port is NOT member port.

5. Press Ctrl+A go back action menu line.

6. Select <Save> to save all conﬁgure value.

NOTE: If trunk groups exist, they will be displayed (eg: TRK1, TRK2…) after

port26, and you can configure if necessary.

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Create 802.1Q VLAN

Create an 802.1Q VLAN and add tagged /untagged member ports to it.

1. Select <Edit>.

2. VLAN Name: Type a name for the new VLAN.

3. VLAN ID: Type a VID (between 1~4094). The default is 1. There are 256 VLAN groups available.

4. Protocol VLAN: Press the Space key to choose the protocol type.

5. Member: Press the Space key to choose a VLAN member. There are three types to select:

a. UnTagged: This is the member port of the VLAN group and outgoing frames are

NO VLAN-Tagged frames.

b. Tagged: This is the member port of the VLAN group and outgoing frames are

VLAN-Tagged frames.

c. NO: The port is NOT member of the VLAN group.

6. Press Ctrl+A to go back to the action menu line.

7. Select <Save> to save all conﬁgured values.

NOTE: If the trunk groups exist, they will be displayed (ex: TRK1, TRK2…)

after port 26, and you can configure them if necessary.

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4.2.3.3. Edit / Delete a VLAN Group

In this page, users can edit or delete a VLAN group.

1. Press <Edit> or <Delete> item.

2. Choose the VLAN group that you want to edit or delete and then press enter.

3. Users can modify the protocol VLAN item and the member ports are tagged or untagged and remove some member ports from this VLAN group.

4. After editing the VLAN, press the <Save> key to save all conﬁguration values.

NOTE:

1. Pressing “Enter” once will complete the deletion when in delete mode.

2. The VLAN Name and VLAN ID cannot be modified.

3. The default VLAN cannot be deleted.

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4.2.3.4. Groups Sorted Mode

In this page, users can select VLAN groups sorted mode:

(1) Sorted by Name

(2) Sorted by VID.

The Edit/Delete a VLAN group page will display the result.

In the Edit/Delete a VLAN Group page, the result of sorted by name.

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In the Edit/Delete a VLAN Group page, the result of sorted by VID.

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4.2.4. Miscellaneous Configuration

4.2.4.1. Ping

Type the Host IP and the counts for pinging, then go back to action menu and press “Save”. “Reply Counts” will display the result of pinging.

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4.2.4.2. MAC Age Interval

Type the number of seconds that an inactive MAC address remains in the switch’s address table.

The valid range is 300~765 seconds. Default is 300 seconds.

4.2.4.3. Broadcast Storm Filtering

This page conﬁgures the broadcast storm control.

1. Press <Edit> to conﬁgure the broadcast storm ﬁlter mode.

2. Press Space key to choose the threshold value.

The valid threshold value is 5%, 10%, 15%, 20%, 25% and NO. Default is 5%.

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4.2.4.4. Maximum bridge transmit delay bound

1. Max bridge transmit delay bound: Limits the packets queuing time in switch. If enabled, when the amount of time the packets queued exceeding the maximum they will be dropped. Press the Space key to set the time. Those valid values are 1sec, 2sec, and 4sec and off. Default is off.

2. Low Queue Delay Bound: Limits the low priority packets queuing time in switch. If enabled, when the amount of time the low priority packet stays in the switch exceeds Low Queue Max Delay Time, it will be sent. Press the Space key to enable or disable this function. Default is disable.

3. Low Queue Max Delay Time: To set the amount of time that low priority packets queuing in switch will be delayed. The valid range is 1~255ms. Default Max Delay Time is 255ms.

NOTE: Make sure “Max bridge transmit delay bound control” is enabled

before enabling Low Queue Delay Bound, because Low Queue Delay Bound must be work under “Max bridge transmit delay bound control” is enabled situation.

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4.2.4.5. Port Security

A port in security mode will be “locked” without permission of address learning. Only the incoming packets with SMAC already existing in the address table can be forwarded normally. The user can disable the port from learning any new MAC addresses, then use the static MAC addresses screen to deﬁne a list of MAC addresses that can use the secure port.

1. Select <Edit>.

2. Press Space key to choose enable / disable item.

3. Press Ctrl+A to go back action menu line.

4. Select <Save> to save all conﬁgure value.

5. You can press <Next Page> to conﬁgure port9 ~ port26, press <Previous Page> return to last page.

4.2.4.5. Collisions Retry Forever

Collisions Retry Forever: Disable – In half duplex, in the event of a collision it

will retry up to 48 times before dropping the frame.

Enable – In half duplex, in the event of a collision it

will continue retrying forever (Default).

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4.2.4.6. Hash Algorithm

Select CRC-Hash(default) or DirectMap for Hash algorithm.

4.2.4.7. IFG Compensation

Enable or disable the inter-frame gap (IFG) compensation function.

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4.2.5. Administration Configuration

4.2.5.1. Change Username

This page allows the user to change the web management username.

Type the new username, and then press <Save> item.

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4.2.5.2. Change Password

This page allows the user to change the web management login password.

4.2.5.3. Device Information

This page allows the user to conﬁgure the device information.

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4.2.5.4. IP Configuration

This page allows the user to conﬁgure the IP settings and ﬁll in the new values.

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4.2.6. Port Mirror Configuration

Port mirroring is a method for monitoring trafﬁc in switched networks. Trafﬁc through ports can be monitored by one speciﬁc port. That is, trafﬁc going in or out of monitored ports will be duplicated into the monitoring port.

Press the Space key to change conﬁgure of per item.

1. Select <Edit>.

2. Sniffer Mode: Press the Space key to set the sniffer mode to Disable,Rx,Tx or Both.

3. Monitoring Port: The sniffer port can be used to see all monitored ports trafﬁc. Press the Space key to choose it.

4. Monitored Port: The ports you want to monitor. All monitored ports trafﬁc will be copied to the sniffer port. You can select a maximum of 25 ports to monitor in the switch. Users can choose which port to monitor in the sniffer mode. Press Space key to choose member port, “V” – denotes a member, “—” – is not a member.

5. Press Ctrl+A to go back to the action menu line

6. Select <Save> to save all conﬁgured values.

7. On the action menu line you can press <Next Page> to conﬁgure port9 ~ port26, press <Previous Page> return to last page.

NOTE: Only one sniffer mode is active in the switch at a time.

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4.2.7. Priority Configuration

4.2.7.1. Port Static Priority

This static priority based on the port, if you set the port to high priority, incoming frames from this port will always be considered to be high priority frames.

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4.2.7.2. 802.1P Priority Configuration

There are 0~7-priority levels that can be mapped to a high or low queue.

1. Select <Edit>.

2. Press Space key to select the priority level mapping to high or low queue.

3. High/Low Queue Service Ration H/L: User can select the ratio of high priority packets and low priority packets.

4. Press Ctrl+A to go back action menu line.

5. Select <Save> to save all conﬁgured values.

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4.2.8. MAC Address Configuration

4.2.8.1. Static MAC Address

In this page users can add / modify / delete a static MAC address.

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Add static MAC address

1. Press <Add> > <Edit> key to add static MAC address.

2. MAC Address: Enter the MAC address which the port should permanently forward trafﬁc, regardless of the device’s network activity.

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3. Port num: Press the <Space> key to select the port number.

4. Vlan ID: If tag-based (802.1Q) VLAN are set up on the switch, static addresses are associated with individual VLANs. Type the VID to associate with the MAC address.

5. Press Ctrl+A to go back action menu line.

6. Then select <Save> to save all conﬁgure value.

Edit static MAC address

1. Press <Edit> key.

2. Choose the MAC address that you want to modify and then press enter.

3. Press <Edit> key to modify all the items.

4. Press Ctrl +A to go back to the action menu line, and then select <Save> to save all conﬁgured values.

Delete static MAC address

1. Press <Delete> key.

2. Choose the MAC address that you want to delete and then press enter.

3. Pressing <Enter> once will complete deletion in delete mode.

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4.2.8.2. Filtering MAC Address

MAC address ﬁltering allows the switch to drop unwanted trafﬁc. Trafﬁc is ﬁltered based on the destination addresses.

In this page users can add /modify /delete a MAC address ﬁlter.

Add filter MAC address

1. Press <Add> > <Edit> key to add a MAC address ﬁlter.

2. MAC Address: Type the MAC address to ﬁlter.

3. Vlan ID: If tag-based (802.1Q) VLAN are set up on the switch, type the VID to associate with the MAC address.

4. Press Ctrl+A to go back to the action menu line, and then select <Save> to save all conﬁgured values.

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Edit filter MAC address

1. Press <Edit> key.

2. Choose the MAC address that you want to modify and then press enter.

3. Press <Edit> key to modify all the items.

4. Press Ctrl+A to go back to the action menu line, and then select <Save> to save all conﬁgured values.

Delete filter MAC address

1. Press <Delete> key to delete a ﬁlter MAC address.

2. Choose the MAC address that you want to delete and then press enter.

3. Pressing <Enter> once will complete the deletion when in delete mode.

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4.3. Protocol Related Configuration

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4.3.1. RSTP

The Rapid-Spanning-Tree Protocol (RSTP) is a standardized method (IEEE 802.1w) for avoiding loops in switched networks. RSTP is enabled, to ensure that only one path at a time is active between any two nodes on the network.

4.3.1.1. Enable/Disable RSTP

This page allows the user to enable or disable the Spanning Tree function. Press the Space key to select enable or disable.

4.3.1.2. RSTP System Configuration

1. You can view spanning tree information about the Root Bridge on the left.

2. On the right, users can set new values for the RSTP parameter.

NOTE: For more information on parameter descriptions please see section

2-4-8.

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4.3.1.3. Per port Configuration

1. PortState: Displays spanning tree status about the switch which per port is forwarding or blocking.

2. Select <Edit>.

3. PathCost: Speciﬁes the path cost of the port that the switch uses to determine which ports are the forwarding ports.

4. Priority: The Priority Port allows you to make it more or less likely to become the root port.

5. EdgePort: If the port connected to a device does not understand STP or RSTP, you can set as “No”. This means the switch will stay in the forwarding state.

6. Press Ctrl +A to go back to the action menu line.

7. Select <Save> to save all conﬁgured values.

8. On the action menu line you can press <Next Page> to conﬁgure port9 ~ port26, press <Previous Page> return to last page.

NOTE: For more information on parameter descriptions please see section

2-4-8.

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4.3.2. SNMP

Any Network Management running the simple Network Management Protocol (SNMP) can be managed by the switch.

Use this page to deﬁne management stations as trap managers and to enter SNMP community strings. Users can also deﬁne a name, location, and contact person for the switch.

4.3.2.1. System Options

1. Press <Edit>.

2. System Name: Type a name to be used for the switch.

3. System Contact: Type the name of contact person or organization.

4. System Location: Type the location of the switch.

5. System Description: Type the description of the switch.

6. Press Ctrl+A to go back to the action menu line.

7. Press <Save> to save the conﬁgured values.

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4.3.2.2. Community Strings

Use this page to Add/ Edit/ Delete SNMP community strings.

1. Community Name: The name of current strings.

2. Write Access: Enable the rights as read only or read-write.

Restricted: Read only, enables requests accompanied by this

string to display MIB-object information.

Unrestricted: Read write, enables requests accompanied by this

string to display MIB-object information and to set MIB objects.

Add Community Name

1. Press <Add> > <Edit> key.

2. Community Name: Type the community name.

3. Write Access: Press the Space key to toggle between restricted or unrestricted.

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Edit Community Name

1. Press the <Edit> key, choose the item that you want to modify and then press Enter.

2. Community Name: Type the new name.

3. Write Access: Press the <Space> key to toggle between restricted or unrestricted.

Delete Community Name

1. Press the <Delete> key.

2. Choose the community name that you want to delete and then press enter.

3. Pressing <Enter> once will complete the deletion when in delete mode.

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4.3.2.3. Trap Managers

A Trap Manager is a management station that receives traps; the system alerts generated by the switch. If no trap manager is deﬁned, no traps are issued. Create a trap manager by entering the IP address of the station and a community string.

Add SNMP trap manager

1. Press <Add> > <Edit> to add the trap manager.

2. IP: Type the IP address.

3. Community Name: Type the community name.

4. Press Ctrl +A to go back to the action line menu and press <Save> key to save the conﬁguration.

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Edit trap managers

1. Press the <Edit> key, and then choose the item that you want to modify.

2. IP: Type the new IP address

3. Community Name: Type the community name.

4. Press Ctrl +A to go back to the action line menu and press <Save> key to save conﬁguration.

Delete trap manager

1. Press the <Delete> key.

2. Choose the trap manager that you want to delete and then press enter.

3. Pressing <Enter> once will complete deletion when in delete mode.

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4.3.3. IGMP

The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet Protocol (IP) suite.

This page allows you to enable / disable the IGMP support.

1. Select <Edit>.

2. IGMP Protocol: Press Space key to choose Enable / Disable.

3. IGMP Query Mode: Press Space key to choose Auto / Enable /Disable.

4. Press Ctrl+A to go back to the action menu line.

5. Select <Save> to save conﬁgured values.

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4.3.4. LACP (Link Aggregation Control Protocol)

This page allows you to conﬁgure and view the LACP status.

NOTE: All ports support LACP dynamic trunk group. If connecting to the

device that also supports LACP, the LACP dynamic trunk group will be created automatically.

4.3.4.1. Working Port Setting

This page allows you to set work ports in trunk groups.

1. Select <Edit>.

2. Group: Displays the trunk group ID.

3. LACP: Displays the trunk group’s LACP status.

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4. LACP Work Port Num: Deﬁnes the maximum number of ports that can be aggregated at the same time. If local static trunk group, the number must be the same as group member ports.

NOTE: Before changing settings on this page, you have to set trunk group

on the page of Trunk Configuration first.

4.3.4.2. State Activity

1. Select <Edit>.

2. Press the Space key to choose the item.

Active: The port automatically sends LACP protocol packets.

Passive: The port does not automatically send LACP protocol packets, and responds

only if it receives LACP protocol packets from the opposite device.

3. Press Ctrl+A go back action menu line.

4. Select <Save> to save conﬁgured values.

NOTE: If a user sets LACP mode in the trunk group, all of the member ports

of this trunk group will set “Active” automatic.

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4.3.4.3. LACP Status

Relational Information for trunk groups can be found on this page.

Static trunk group

LACP trunk group

<Quit>: Exit this page and return to previous menu.

<Previous Page>: Return to previous page to view.

<Next page>: Go to the next page to view.

NetComm NP2624M User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual