36

2.5.11 SNMP

Simple Network Management Protocol (SNMP) is an application layer protocol used to

manage and monitor TCP/IP-based devices. SNMP is used to exchange management

information between the network management system (NMS) and a network element (NE).

A manager station can manage and monitor the WLAN Residential Gateway through the

network via SNMP version one (SNMPv1), SNMP version 2c.

SNMP:

Enable or Disable SNMP service.

SNMP Read Community:

Specify the Read Community.

SNMP Write Community:

Specify the Write Community.

SNMP Trap Host:

Specify the SNMP trap host (IP address) to which trap messages will be

sent.

SNMP Trap Community:

Specify the Trap Community.

SNMP Power Down Trap:

If enabled, a trap or notice will be sent when power supply is

down.

2.6 Switch Management

In this section, users can setup several advanced features. Select

Switch Management

from the

Main Menu

, the sub-items

–

Port Configuration

,

Bandwidth Control

,

Configure

VLAN

and

IGMP Snooping

–

will show up.

2.6.1 Port Configuration

Select

Port Configuration

from the

Switch Management

menu,

then

Port Configuration

screen page appears.

37

Port State:

Enable or disable the status of each port.

Port Type:

Each port

’

s Auto-Negotiation configuration.

Port Speed:

Each port

’

s speed configuration (10/100Mbps).

Duplex:

Each port

’

s Duplex configuration.

Flow Control:

Each port

’

s flow control configuration.

MDI/MIDX:

View-only field (always auto).

Click the

“

Edit

”

button on the port that you would like to make some changes. When the

selected port is highlighted in blue, users can make some changes by selecting from the

pull-down menu.

Click the

“

Change

”

button to apply the changes.

2.6.2 Bandwidth Configuration

Select

Bandwidth Configuration

from the

Switch Management

menu,

then

Bandwidth

Configuration

screen page appears.

Bandwidth Range:

There are 3 different bandwidth ranges in drop-down menu for selection:

1024k~100M (Min. unit size 1024k), 64K~100M (Min. unit size 128k) and 16K~32M (Min.

unit size 16k). If you select

“

1024k~100M (Min. unit size 1024k)

”

, the minimum bandwidth

that can be entered and bandwidth range for Egress and Ingress traffic is 1024. For

example, if you enter a value that is lower than 1024k or higher than 1024k but lower than

38

2048k, then the bandwidth will be adjusted to 1024k automatically.

The next bandwidth that

can be used is 2048k.

2.6.2.1 Egress Bandwidth Control

There are six modes in the drop-down menu for selection:

OFF/ By Port Only/ By Port with

Queue/ By DSCP/ By 802.1p

/

By Application

. Except

“

OFF

”

mode, the advanced

configurations will be displayed when the appropriate mode is selected according to the

network application with this gateway installed.

2.6.2.1.1 By Port Only

Selecting

“

By Port Only

”

enables users to allocate transmission bandwidth to each LAN and

WAN port.

NAT Download & Upload Stream:

These two ports determine bandwidth for downstream

traffic and upstream traffic for ports assigned in NAT mode.

Bandwidth:

Specify reserved bandwidth for each port.

2.6.2.1.2 By Port with Queue

For each WAN and LAN port, users can designate each port

’

s specific priority queue and

allocate transmission bandwidth to each queue.

By Port Map to Q:

Select priority queue mapping for LAN port 1~4 and WAN from the drop-

down menu. The queue priority is Q3>Q2>Q1>Q0.

39

Reserve BW:

Specify reserved bandwidth for each queue (Queue-0 ~ Queue-3).

2.6.2.1.3 By DSCP

Differentiated Service Code Point (DSCP) provides a means for users to specify different

priority levels to different applications that uses 6-bit of the DS field to select Per Hop

Behavior (PHB). As defined by the IETF, PHB values are written using a prefix that identifies

the way forwarding should be handled: expedited forwarding (EF) or assured forwarding

(AF). Once DSCP marking is assigned, it can map to a queue for setting up preferred

egress bandwidth.

DSCP Map:

Select priority queue mapping for the DSCP field within every IP Packet from

the drop-down menu. The DSCP includes DSCP (0) to DSCP (63), and the priority queue

includes Q0, Q1, Q2 and Q3. The queue priority is Q3>Q2>Q1>Q0.

Reserve BW:

Specify reserved bandwidth for each queue (Queue-0 ~ Queue-3).

2.6.2.1.4 By 802.1p

IEEE 802.1p is a standard that provides traffic class expediting and dynamic multicast

filtering. Essentially, it provides a mechanism for implementing Quality of Service (QoS) at

the MAC (Media Access Control) level.

Eight priority bits are available, expressed through the 3-bit user_priority field in an IEEE

802.1q header added to the frame. The way traffic is treated when assigned to any particular

class is undefined and left to the implementation.

40

By 802.1p Map to Q:

Select priority bit and queue mapping for P-Bit-0 to P-Bit-7 from the

drop-down menu. The queue priority is Q3>Q2>Q1>Q0.

Reserve BW:

Specify reserved bandwidth for each queue (Queue-0 ~ Queue3).

2.6.2.1.5 By Application

By Application mode allows users to define a range of port number or a port number in

terms of destination or source port. If conditions are fulfilled, the queue and bandwidth

settings will be applied.

No.:

The total of eight rules can be set up. The comparison process will start from rule No. 1

to No. 8. If the rule No. 1 is fulfilled, then the assigned queue and reserved bandwidth will be

applied. If not, each rule will be checked one by one.

Compare:

Four options are available for selection.

Doesn

’

t Compare:

This rule is disabled.

Source:

Use TCP source port to compare.

Destination:

Use TCP destination port to compare.

Destination & Source:

Use both TCP destination and source port to compare.

Port Start:

Specify the starting TCP port number from 0 to 65535.