Overview, Port trunking guidelines, Port trunking 24 – Allied Telesis AT-S68 User Manual
Page 24
Port Trunking
24
Overview
Port trunking is an economical way for you to increase the bandwidth
between two Ethernet switches. A port trunk is 2, 3, or 4 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 always 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.
Figure 6 illustrates a port trunk of four data links between two
AT-FS7016 switches.
Figure 6 Port Trunk Example
Port Trunking
Guidelines
Observe the following guidelines when creating a port trunk:
A port trunk can consist of 2, 3, or 4 ports.
The ports of a trunk must be of the same medium type. For
example, they can be all twisted pair ports or all fiber optic ports.
The speed, duplex mode, and flow control settings must be the
same for all the ports in a trunk.
The ports of a trunk must be members of the same VLAN. A port
trunk cannot consist of ports from different VLANs.
AT-FS7016
16 Port Fast Ethernet Smart Switch
10
12
14
16
9
11
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15
2
4
6
8
1
3
5
7
AUTO
MDI / MDI-X
POWER
LINK/ACT
100M
FDX
1
2
3
4
5
6
7
8
9
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RS-232 TERMINAL PORT
AT-FS7016
16 Port Fast Ethernet Smart Switch
10
12
14
16
9
11
13
15
2
4
6
8
1
3
5
7
AUTO
MDI / MDI-X
POWER
LINK/ACT
100M
FDX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RS-232 TERMINAL PORT