KTI Networks KGS-612F User Manual

KGS-612F

Web Smart 6-Port Gigabit Ethernet Switch

with Fiber Connectivity

User,s Ma nual

DOC.071005

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(C) 2007 KTI Networks Inc. All rights reserved. No part of this documentation may be reproduced

in any form or by any means or used to make any directive work (such as transla­tion or tra nsf ormation) without permission from KTI Networks Inc.

KTI Networks Inc. reserves the right to revise this documentation and to make changes in content
from time to time without obligation on the part of KTI Networks Inc. to provide notification of such
revision or change.

For more information, contact:

United States KTI Networks Inc.

P.O. BOX 631008
Houston, T exas 77263-1008

Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
URL: http://www.ktinet.com/

International Fax: [phone]

E-mail: [e-mail]
URL: http://www.ktinet.com.tw/

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The information contained in this document is subject to change without prior notice. Copyright (C). All
Rights Reserved.

TRADEMARKS

Ethernet is a registered trademark of Xerox Corp.

WAR NING:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and if not installed and used in accordance with the
instruction manual may cause harmful interference in which case the user will be required to correct the
interference at his own expense.

NOTICE:

(1 ) The changes or modifications not expressively approved by the party responsible for compliance
could void the user's authority to operate the equipment.
(2) Shielded interface cables and AC power cord, if any, must be used in order to comply with the
emission limits.

CISPR A COMPLIANCE:

This device complies with EMC directive of the European Community and meets or exceeds the following
technical standard.
EN 55022 - Limits and Methods of Measurement of Radio Interference Characteristics of Information
T e chnology Equipment. This device complies with CISPR Class A.
WARNING: This is a Class A product. In a domestic environment this product may cause radio interfer­ence in which case the user may be required to take adequate measures.

CE NOTICE
Marking by the symbol

indicates compliance of this equipment to the EMC directive of the Euro-

pean Community . Such marking is indicative that this equi pment meets or exceeds the following techni­cal standards:

EN 55022: Limits and Methods of Measurement of Radio Interference characteristics of Information
T echnology Equi pment.

EN 50082/1:Generic Immunity Sta ndard -Part 1: Domestic Commercial a nd Light Industry .
EN 60555-2: Disturbances in supply systems caused by household appliances and similar electrical

equipment - Part 2: Harmonics.

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Ta ble of Contents

1. Introduction.................................................................................................. 6

1.1 Features ...................................................................................................................7

1.2 Product Panels.........................................................................................................7

1.3 LED Indicators..........................................................................................................8

1.4 Specifications...........................................................................................................8

2. Installation .................................................................................................. 11

2.1 Un packing...............................................................................................................1 1

2.2 Safety Cautions ...................................................................................................... 1 1

2.3 Mounting the Switch on a Wall................................................................................. 11

2.4 Mounting the Switch on a Din-rail Chassis ..............................................................12

2.5 Applying Power ........................................................................................................12

2.6 Reset Button ..........................................................................................................13

2.7 Making UTP Connections .......................................................................................1 3

2.8 Making Fiber Conne ction ........................................................................................14

2.9 LED Indication ........................................................................................................15

2.10 Configuring IP Address and Password for the Switch ...........................................15

3. Advanced Functions .................................................................................. 16

3.1 Abbreviation .............................................................................................................16

3.2 QoS Function ..........................................................................................................17

3.2.1 Packet Priority Classification ................................................................................18

3.2.2 Priority Class Queues ..........................................................................................18

3.2.3 Egress Service Policy ..........................................................................................18

3.3 VLAN Function.........................................................................................................19

3.3.1 VLAN Operation ....................................................................................................1 9

3.3.2 Ingress Rules .......................................................................................................19

3.3.2.1 802.1Q Tag A ware Per port setting....................................................................19

3.3.2.2 Keep Tag Per port setting..................................................................................19

3.3.2.3 Drop Untag Per Port Setting ..............................................................................20

3.3.2.4 Drop Tag Per Port Setting..................................................................................20

3.3.3 Ingress Default Tag Per Port Setting.....................................................................20

3.3.4 Packet Tag Information .........................................................................................2 0

3.3.5 VLAN Group T able Configuration...........................................................................21

3.3.6 VLAN Classification...............................................................................................21

3.3.7 Packet Forwarding................................................................................................21

3.3.8 Egress Tagging Rules ..........................................................................................22

3.3.8.1 Egress Settings.................................................................................................22

3.3.9 Summary of VLAN Function .................................................................................2 2

3.4 802.1X Authentication..............................................................................................22

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4. Web Management ....................................................................................... 24

4.1 Start Browser Software and Making Connection .....................................................24

4.2 Login to the Switch Unit...........................................................................................24

4.3 Main Ma nagement Menu..........................................................................................25

4.4 System ....................................................................................................................26

4.4.1 Ma nagement VLAN...............................................................................................28

4.5 Ports........................................................................................................................29

4.5.1 SFP DDM Status ..................................................................................................30

4.6 VLANs .....................................................................................................................31

4.6.1 Port-ba sed VLAN Mode.........................................................................................32

4.6.2 Port-ba sed VLAN ISP Mode ..................................................................................3 3

4.6.3 Advanced VLAN Mode ...........................................................................................34

4.6.3.1 Ingress Default Tag............................................................................................35

4.6.3.2 Ingress Settings.................................................................................................3 6

4.6.3.3 Egress Settings.................................................................................................37

4.6.3.4 VLAN Groups .....................................................................................................3 9

4.6.4 Important Notes for VLAN Configuration................................................................40

4.7 Aggregation..............................................................................................................41

4.8 LACP.......................................................................................................................42

4.9 RSTP ......................................................................................................................43

4.10 802.1X Configuration .............................................................................................44

4.10.1 802.1X Re-authentication Para meters................................................................46

4.1 1 Mirroring.................................................................................................................47

4.12 Quality of Service ..................................................................................................4 8

4.12.1 802.1p Ma pping...................................................................................................49

4.12.2 DSCP Mapping ...................................................................................................50

4.12.3 QoS Service Policy ............................................................................................51

4.13 Storm Control........................................................................................................52

4.14 Statistics Overview................................................................................................53

4.15 Detailed Statistics ..................................................................................................5 4

4.16 LACP Status..........................................................................................................55

4.17 Ping .......................................................................................................................57

4.18 Reboot System .....................................................................................................58

4.19 Restore Default .....................................................................................................58

4.20 Update Firmware...................................................................................................58

4.21 Logout ...................................................................................................................58

5. SNMP Support ............................................................................................ 5 9

Appendix. Factory Default Settings............................................................... 60

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1. Introduction

The KGS-612F is a managed Gigabit Ethernet switch which is featured with the following switched
ports:

 Three 10/100/1000Mbps Giga bit copper ports
 T wo combo ports - 10/100/1000Mbps copper & 100Base-FX SFP
 One combo port - 10/100/1000Mbps copper & 1000Base-X SFP

a nd the following a dva ntages in a small f ootprint box:

Plug a nd Play

The switch is shipped with factory default configuration which behaves like an unmanaged Gigabit
switch for workgroup. It provides five 10/100/1000Mbps copper ports for connections to Ethernet, Fast
Ethernet, and Gigabit Ethernet devices. With the featured auto-negotiation function, the switch can
detect and configure the connection speed and duplex automatically. The switch also provides auto
MDI/MDI-X function, which can detect the connected cable and switch the transmission wire pair and
receiving pair automatically. This auto-crossover function can simplify the type of network cables
used.

Fiber Connectivity

Two 100M SFP ports can be installed with an optional SFP optical fiber transceiver to support two
100Base-FX fiber connections when needed. One mini-GBIC SFP port can also be installed with an
optional SFP optical fiber transceiver to support one Gigabit fiber connection when needed.

Web Management

The switch is embedded with an Http server which provides management functions for advanced
network functions including Port Control, Quality of Service, a nd V irtual LAN functions. The manage­ment can be performed via Web browser based interface over TCP/IP network.

Quality of Service

For advanced application, the switch is featured with powerful Quality of Service (QoS) function
which can classify the priority for received network frames based on the ingress port and frame
contents. Furthermore, many service priority policies can be configured for egress operation in per-port
basis.

Virtual LAN (VLAN)

For increasing Tagged VLAN applications, the switch is also featured with powerful VLAN function
to fulfill the up-to-date VLAN requirements. The switch supports both port-based VLAN and tagged
VLAN in per-port basis.

802.1x Authentication

IEEE 802.1X port-based network a ccess control function provide a mea ns of authenticating a nd autho­rizing devices attached to the switched port that has point-to-point connection characteristics, and of
preventing access to that port in ca se s in which the authentication and authorization process fails.

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1.1 Features

 Provides 6 10/100/1000Mbps RJ-45, one 1000M SFP and two 100M SFPs
 Provides in-band web-based management interface
 All copper ports support auto-negotiation and auto-MDI/MDI-X detection
 Provides full wire speed forwarding
 Supports 802.3x flow control for full-duplex a nd ba ckpressure for half-duplex
 Provides port status, statistic monitoring a nd control function
 Supports port-based and 802.1Q Tag-based VLAN
 Provides QoS function
 Provides link aggregation (port trunking) function with LACP support
 Provides port mirroring function
 Provides 802.1X authentication for port a ccess
 Supports 802.1w RSTP, 802.1D STP and 802.1S MSTP
 W atchdog timer function
 Supports SFP with Digital Di agnostic Monitoring (DDM)
 Provides packet storm control function
 In-ba nd e mbedded firmware upgrade function

1.2 Product Panels

The following figure illustrates the front panel and rear panel of the switch:

Front panel

Rear panel

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1.3 LED Indicators

LED Function

POWER Power status
LNK/1000M/ACT Network port 1000M link status (Port 1 - Port 6)
LNK/100M/ACT Network port 100M link status (Port 1 - Port 6)
LNK/10M/ACT Network port 10M link status (Port 1 - Port 6)

1.4 Specifications

10/100/1000 Copper Ports

Compliance IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,

IEEE 802.3u 1000Base-T
Connectors Shielded RJ-45 jacks
Pin assignments Auto MDI/MDI-X detection
Configuration Auto-negotiation or software control
Tra nsmission rate 10Mbps, 100Mbps, 1000Mbps
Duplex support Full/Half duplex
Network cable Cat.5 UTP

Combo Port with 10/100/1000 RJ-45 and 1000Mbps Mini-GBIC SFP
Copper interface

Compliance IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,

IEEE 802.3u 1000Base-T
Connectors Shielded RJ-45 jacks
Pin assignments Auto MDI/MDI-X detection
Configuration Auto-negotiation or software control
Tra nsmission rate 10Mbps, 100Mbps, 1000Mbps
Duplex support Full/Half duplex
Network cable Cat.5 UTP

Fiber interface

Compliance IEEE 802.3z 1000Base-SX/LX (mini-GBIC)
Connectors SFP for optional SFP type fiber transceivers
Configuration Auto/Forced, 1000Mbps, Full duplex
Tra nsmission rate 1000Mbps
Network cables MMF 50/125 60/125, SMF 9/125
Eye safety IEC 825 complia nt

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Combo Ports with 10/100/1000 RJ-45 and 100Mbps SFP
Copper interface

Compliance IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,

IEEE 802.3u 1000Base-T
Connectors Shielded RJ-45 jacks
Pin assignments Auto MDI/MDI-X detection
Configuration Auto-negotiation or software control
Tra nsmission rate 10Mbps, 100Mbps, 1000Mbps
Duplex support Full/Half duplex
Network cable Cat.5 UTP

Fiber interface

Compliance IEEE 802.3u 100Base-FX
Connectors SFP for optional SFP type fiber transceivers
Configuration Forced, 100Mbps, Full duplex
Tra nsmission rate 100Mbps
Network cables MMF 50/125 60/125, SMF 9/125
Eye safety IEC 825 complia nt

Switch Functions

MAC Addresses Table 8K entries
Forwarding & filtering Non-blocking, full wire speed
Switching technology Store and forward
Maxi mum packet length 1526 bytes (Jumbo frame support disa bled)
Flow control IEEE 802.3x pause frame ba se for full duplex operation

Back pressure for half duplex operation
VLAN function Port-based VLAN and IEEE 802.1Q Tag-based VLAN
QoS function Port-based, 802.1p-based, IP DSCP-based
Port control Port configuration control vi a software management
Storm control Broadca st, Multicast storm protection control via software management
Aggregation Link aggregation (port trunking)
Port Mirroring Mirror received frames to a sniffer port

LED Indicators

System Power status
Per copper port Port link/activity status, speed status

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Software Management Functions

Interfaces Web browser
Management objects System configuration - IP settings, Name, Password

Port configuration control a nd status

VLAN function settings

Port Link Aggregation function settings

Link Aggregation LACP settings

RSTP settings

802.1X port access control

Port mirroring settings

QoS function settings

Storm protection control settings

Port statistic, LACP status, RSTP status

Reboot, restore factory default, update firmware

DC Power Input

Interfaces DC Jack ( -D 6.3mm / + D 2.0mm)
Operating Input Voltages +7.5VDC(+/-5%)
Power consumption 9W max. @7.5V

Mechanical

Dimension (base) 180 x 114 x 26 mm
Housing Enclosed metal with no fan
Mounting Desktop mounting, wall mounting, Din-rail mounting

Environmental

Operating Temperature Typical 0
Storage Temperature -20

o

C ~ 40oC

o

C ~ 70oC

Relative Humidity 10% ~ 90%

Electrical Approvals

FCC Part 15 rule Class A
CE EMC, CISPR22 Class A

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2. Installation

2.1 Unpacking

The product package contains:

• The switch unit

• One power adapter

• One product CD-ROM

2.2 Safety Cautions

To reduce the risk of bodily injury, electrical shock, fire, and damage to the product, observe the
following precautions.

• Do not service any product except as explained in your system documentation.

• Opening or removing covers may expose you to electrical shock.

• Only a trained service technician should service components inside these compartments.

• If any of the following conditions occur, unplug the product from the electrical outlet and re pla ce

the part or contact your trained service provider:

- The power cable, extension cable, or plug is damaged.

- An object has fallen into the product.

- The product has been exposed to water.

- The product has been dropped or damaged.

- The product does not operate correctly when you follow the operating instructions.

• Do not push any objects into the openings of your system. Doing so can cause fire or electric

shock by shorting out interior components.

• Operate the product only from the type of external power source indicated on the electrical

ratings label. If you are not sure of the type of power source required, consult your service
provider or local power compa ny.

2.3 Mounting the Switch on a Wall

The switch can be mounted on a desktop or shelf or a wall. Make sure that there is proper heat
dissipation from and adequate ventilation around the device. Do not place heavy objects on the device.

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2.4 Mounting the Switch on a Din-rail Chassis

The switch also ca n be mounted on a din-rail chassis.

The steps are:

1. Screw the din-rail mounting bracket on the bottom of the switch.

2. Mount the units on a din-rail chassis

The din-rail mounting bracket is optional. Consult the pla ce where you purcha sed the product.

2.5 Applying Power

Before you begin the installation, check the AC voltage of your area. The AC power ada pter which is used
to supply the DC power for the unit should have the AC voltage matching the commercial power voltage in
your area.

The AC Power Adapter Specifications

AC input power: AC power voltage of your area, options -

Rated AC120V/60Hz DC7.5V 1.2A
Rated AC230V/50Hz DC7.5V 1.2A
Rated AC240V/50Hz DC7.5V 2A

The steps to apply the power to the product are:

1. Connect power adapter DC plug to the DC input jack located on the ba ck of the unit before

connecting to the AC outlet.

2. Connect the power adapter to the AC outlet.

3. Check Power LED indication.

Note: Before you begin the installation, check the AC voltage of your area. The AC power

adapter which is used to supply the DC power for the unit should have the AC voltage
matching the commercial power voltage in your area.

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2.6 Reset Button

The reset button is used to perform a reset to the switch. It is not used in normal cases and can be used
for di agnostic purpose. If any network hanging problem is suspected, it is useful to push the button to
reset the switch without turning off the power. Check whether the network is recovered.

The button can also be used to restore the software configuration settings to factory default values.

The operations are:

Operation Function

Press the button more than 5 seconds when power up Restore factory default settings
Press the button and release during switch operation Reboot the switch

2.7 Making UTP Connections

The 10/100/1000 RJ-45 copper ports supports the following connection types and dista nces:

Network Cables

10BASE-T: 2-pair UTP Cat. 3,4,5 , EIA/TIA-568B 100-ohm
100BASE-TX: 2-pair UTP Cat. 5, EIA/TIA-568B 100-ohm
1000BASE-T: 4-pair UTP Cat. 5 or higher (Cat.5e is recommended), EIA/TIA-568B 100-ohm
Link distance: Up to 100 meters

Auto MDI/MDI-X Function

This function allows the port to auto-detect the twisted-pair signals and adapts itself to form a valid
MDI to MDI-X connection with the remote connected device automatically. No matter a straight
through cable or crossover cable is connected, the ports can sense the receiving pair automatically and
configure itself to match the rule for MDI to MDI-X connection. It simplifies the cable installation.

Auto-negotiation Function

The ports are featured with auto-negotiation function and full capability to support connection to any
Ethernet devices. The port performs a negotiation process for the speed and duplex configuration with
the connected device automatically when each time a link is being established. If the connected device
is also auto-negotiation capable, both devices will come out the best configuration after negotiation
process. If the connected device is incapable in auto-negotiation, the switch will sense the speed and
use half duplex for the connection.

Port Configuration Management

For making proper connection to an auto-negotiation incapable device, it is suggested to use port con­trol function via software management to set forced mode and specify speed and duplex mode which
match the configuration used by the connected device.

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2.8 Making Fiber Connection

The SFP slot must be installed with an SFP fiber transceiver for making fiber connection. Your
switch may come with some SFP transceivers pre-installed when it is shipped.

Installing SFP Fiber Transceiver

To install an SFP fiber transceiver into SFP slot, the steps are:

1. Turn off the power to the switch.

2. Insert the SFP fiber transceiver into the SFP slot. Normally, a bail is provided f or every SFP

tra nsce iver. Hold the bail a nd make insertion.

3. Until the SFP transceiver is seated securely in the slot, place the bail in lock position.

Connecting Fiber Cables

LC connectors are commonly equipped on most SFP transceiver modules. Identify TX and RX
connector before making cable connection. The following figure illustrates a connection example
between two fiber ports:

Make sure the Rx-to-Tx connection rule is followed on the both ends of the fiber cable.

Network Cables

Multimode (MMF) - 50/125, 62.5/125
Single mode (SMF) - 9/125

Fiber Port Configuration

For 100M fiber application on Port 4 and Port 5, it is necessary to configure 100 Full for the port with
fiber connection. For 1000M fiber application on Port 6, just leave the default port configuration Auto
for fiber connection.

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2.9 LED Indication

LED Function State Interpretation

POWER Power status ON The power is supplied to the switch.

OFF The power is not supplied to the switch.

LNK/1000M/ACT Port link status ON A 1000M link is established. (No traffic)

BLINK Port link is up and there is traffic.
OFF Port link is down.

LNK/100M/ACT Port link status ON A 100M link is established. (No traffic)

BLINK Port link is up and there is traffic.
OFF Port link is down.

LNK/10M/ACT Port link status ON A 10M link is established. (No traffic)

BLINK Port link is up and there is traffic.
OFF Port link is down.

2.10 Configuring IP Address and Password for the Switch

The switch is shipped with the following factory default settings for software ma nage ment :

Default IP address of the switch : 192.168.0.2 / 255.255.255.0

The IP Address is an identification of the switch in a TCP/IP network. Each switch should be desig­nated a new and unique IP address in the network. Refer to Web management interface for System
Configuration.

The switch is shipped with factory default password 123 for software management.
The password is used for authentication in accessing to the switch via Http web-based interface. For

security reason, it is recommended to change the default settings for the switch before deploying it to
your network. Refer to Web management interface for System Configuration.

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3. Advanced Functions

T o help a better understanding about the software management interfa ces, this cha pter describe s some
advanced functions provided by the switch.

3.1 Abbreviation

Ingress Port : Ingress port is the input port on which a packet is received.
Egress Port : Egress port is the output port from which a packet is sent out.
IEEE 802.1Q Packets : A packet which is embedded with a VLAN Tag field
VLAN T ag : In IEEE 802.1Q packet format, 4-byte tag field is inserted in the original Ethernet frame

between the Source Address and Type/Length fields. The tag is composed of :

#of bits 16 3 1 12

Frame field TPID User priority CFI VID

TPID : 16-bit field is set to 0x8100 to identify a frame as an IEEE 802.1Q tagged packet
User Priority : 3-bit field refer to the 802.1p priority
CFI : The Canonical Format Indicator for the MAC address is a 1 bit field.
VID : VLAN identifier, 12-bit field identifies the VLAN to which the fra me belongs to.
Untagged packet : A standard Ethernet frame with no VLAN Tag field
Priority-tagged packet : An IEEE 802.1Q packet which VID filed value is zero (VID=0)
VLAN-Tagged packet : An IEEE 802.1Q packet which VID filed value is not zero (VID<>0)
PVID (Port VID)

PVID is the default VID of an ingress port. It is often used in VLAN classification for untagged
packets. It is also often used for egress tagging operation.

DSCP : Differentiated Service Code Point, 6-bit value field in an IP packet
VLAN Table lookup : The process of searching VLAN table to find a VLAN which matches the

given VID index
MAC address table lookup : The process of searching MAC address table to find a MAC entry

which matches the given destination MAC address and the port where the MAC address is located
Packet forwarding : also known as packet switching in a network switch based on MAC address

table and VLAN table information
VLAN forwarding : the operation that a packet is forwarded to an egress destination port based on

VLAN table information
VLAN group : configuration information about a VLAN which can be recognized in the switch. The

information includes a VID associated to the VLAN, member ports, and some special settings.

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3.2 QoS Function

The switch provides a powerful Quality of Service (QoS) function to guide the packet forwarding in
four priority classes. The versatile classification methods can meet most of the application needs. The
following figure illustrates the QoS operation flow when a packet received on the ingress port until it is
transmitted out from the egress port:

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3.2.1 Packet Priority Classification

Each received packet is examined and classified into one of four priority classes, Class 3, Class 2,
Class 1 and Class 0 upon reception. The switch provides the following classification methods:

802.1p classification : use User Priority tag value in the received IEEE 802.1Q packet to map to one
priority class

DSCP classification : use DSCP value in the received IP packet to map to one priority class
Port-based classification : used when 802.1p and DSCP are disabled or fail to be applied

They all can be configured to be activated or not. More than one classification methods can be enabled
at the same time. However, 802.1p classification is superior than DSCP classification.

802.1p mapping tables : Each ingress port has its own mapping table for 802.1p classification.
DSCP mapping table : All ingress ports share one DSCP mapping table for DSCP classification.
Default port priority : A port default priority class is used when port-based classification is applied

All configuration settings are in per port basis except that DSCP mapping table is global to all ports. A
received packet is classified into one of four priority class before it is forwarded to an egress port.

3.2.2 Priority Class Queues

Each egress port in the switch is equipped with four priority class egress queues to store the packets
for transmission. A packet is stored into the class queue which is associated to the classified priority
class. For example, a packet is stored into Class 3 egress queue if it is classified as priority Class 3.

3.2.3 Egress Service Policy

Each port can be configured with an egress service policy to determine the transmission priority among
four class queues. By default, higher class number has higher priority than the lower class numbers.

Four policies are provided for selection as follows:

• Strict priority : Packets in high priority class queue are sent first until the queue is empty

• Weighted ratio priority Class 3:2:1:0 = 4:3:2:1 : four queues are served in 4:3:2:1 ratio

• Weighted ratio priority Class 3:2:1:0 = 5:3:1:1 : four queues are served in 5:3:1:1 ratio

• Weighted ratio priority Class 3:2:1:0 = 1:1:1:1 : four queues are served equally

Strict priority policy lets high priority class queue is served first until it is empty. Lower priority queue
may not get any service (or egress bandwidth) when higher priority traffic is heavy for long time. Three
weighted ratio policies are provided to resolve such problem. Four class queues are served in weighted
round robin basis. Every priority class can get a guaranteed ratio for the egress bandwidth.

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3.3 VLAN Function

The switch supports port-based VLAN, 802.1Q Tag VLAN and eight VLAN groups.

3.3.1 VLAN Operation

The following figure illustrates the basic VLAN operation flow beginning from a packet received on an
ingress port until it is transmitted from an egress port.

The following sections describe the VLAN processes and Advanced VLAN mode settings provided
by the switch. A global setting means the setting is applied to all ports of the switch. A per port setting
means each port can be configured for the setting respectively.

3.3.2 Ingress Rules

When a packet is received on an ingress port, the ingress rules are applied for packet filtering and
packet tag removal. The related Ingress port settings are:

3.3.2.1 802.1Q Tag Aware Per port setting

Tag-aware -802.1Q Tag Aware mode is used. The switch examines the tag content of every

received packets. For a VLAN tagged packet, the packet VLAN tag data is retrieved
as packet tag information for VLAN classification and egress tagging operation. For
untagged packet and priority-tagged packet, port-based mode is used.

Tag-ignore - Port-based mode is used. The switch ignores the tag content of every received

packets. Ingress Port Default Tag is always used as packet tag information for VLAN
classification.

3.3.2.2 Keep Tag Per port setting

Enable - The VLAN tag in the received VLAN tagged packet will be kept as it is and is not

stripped in whole forwarding operation.

Disable - The VLAN tag data in the received VLAN tagged packet is stripped (removed).

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3.3.2.3 Drop Untag Per Port Setting

Enable - All untagged packets and priority-tagged packets are dropped. A priority-tagged packet

is treated as an untagged packet in this switch. Only VLAN-tagged packets are
admitted.

Disable - Disable Untagged packet filtering

3.3.2.4 Drop Tag Per Port Setting

Enable - All VLAN-tagged packets are dropped. A priority-tagged packet is treated as an

untagged packet in this switch. Only untagged packets are admitted.

Disable - Disable VLAN-tagged packet filtering

3.3.3 Ingress Default Tag Per Port Setting

Each port can be configured with one Ingress Default Tag. This ingress port default tag is used when
ingress port is in Tag-ignore mode or for the received untagged packets in Tag-aware mode. The
Ingress Default Tag includes PVID, CFI and User Priority configuration.

When Ingress port default tag is used, it is copied as packet associated Packet Tag Information for
VLAN classification. The PVID is used as index to one VLAN group in VLAN group table.

3.3.4 Packet Tag Information

Under VLAN proce ss, every packet is associated with one Packet Tag information in packet forward­ing operation. The tag information includes VID, CFI and User Priority data and is used for two
purposes:

• The VID in tag is used as index for VLAN classification.

• The tag is used for egress tag insertion if egress tagging is enabled.

The following table lists how the Packet T ag inf ormation is generated:

Tag Aware setting Received Packet Type Packet Tag information source

Tag-ignore Untagged packet Ingress Port Default Tag
Tag-ignore Priority-tagged packet Ingress Port Default Tag
Tag-ignore VLAN-tagged packet Ingress Port Default Tag

Tag-aware Untagged packet Ingress Port Default Tag
Tag-aware Priority-tagged packet Ingress Port Default Tag
Tag-aware VLAN-tagged packet Received packet VLAN Tag

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