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Port trunking overview – Allied Telesis AT-S60 User Manual

Page 128

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Chapter 8: Port Trunking

Section I: Basic Features

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Port Trunking Overview

Port trunking is an economical way for you to increase the bandwidth
between two Ethernet switches. For the AT-8400 Series switch, a port
trunk can consists of up to eight ports that have been grouped together
to function as one logical path. A port trunk increases the bandwidth
between switches and is useful in situations where a single physical data
link between switches is insufficient to handle the traffic load.

A port trunk sends packets from a particular source to a particular
destination over the same link within the trunk. A single link is
designated for flooding broadcasts and packets of unknown destination.

The example in Figure 35 consists of a 1,000 Mbps port trunk with four
data links between two AT-8400 switches.

Figure 35 Port Trunk Example with 1000 Mbps Ports

AT-8400

Modular Switch System

2

3

4

5

6

1

AT-8411

PWR

EJECT

LNK

10

ACT

100

AT-8411

PWR

EJECT

LNK

10

ACT

100

AT-8413

PWR

EJECT

AT-8413

PWR

EJECT

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

AT-8413

PWR

EJECT

L/A

L/A

D/C

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BASE-X

10/1001000

BASE-T

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

AT-8413

PWR

EJECT

3

AT-8400

Modular Switch System

2

3

4

5

6

1

AT-8411

PWR

EJECT

LNK

10

ACT

100

AT-8411

PWR

EJECT

LNK

10

ACT

100

AT-8413

PWR

EJECT

AT-8413

PWR

EJECT

AT-8413

PWR

EJECT

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

L/A

L/A

D/C

1000

BASE-X

10/1001000

BASE-T

AT-8413

PWR

EJECT

3