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Port Trunking Configuration Example
In the example shown in Figure 10, three ports are trunked between two switches.
Figure 10: Port Trunk Group Configuration Example
SYS
SP
FAN
L/A
ST-A
2
ST-B
1
2
3
4
SYS
SP
FAN
L/A
ST-A
1
ST-B
1
2
3
4
Use the following procedure to configure port trunking as shown in the Figure 10
example. You must first connect to the each switch's command line interface (CLI)
as the administrator.
NOTE:
described in this example, see the EX2500 Ethernet Switch Command Reference.
You cannot change the VLAN membership for a trunk group's member port.
You can change the VLAN membership of the trunk group.
When an active port is configured in a trunk, the port becomes a trunk member
when you enable the trunk. The Spanning Tree parameters for the port then
change to reflect the new trunk settings.
All trunk members must be in the same Spanning Tree Group (STG) and can
belong to only one Spanning Tree Group (STG). However if all ports are tagged,
then all trunk ports can belong to multiple STGs.
When a trunk is enabled, the trunk Spanning Tree participation setting takes
precedence over that of any trunk member.
You cannot configure a trunk member as a monitor port in a port-mirroring
configuration.
Trunks cannot be monitored by a monitor port; however, trunk members can
be monitored.
A trunk member cannot be configured as a monitor port.
All ports in static trunks must be have the same link configuration (speed,
duplex, flow control).
9
5
6
7
8
9
10
11
12
11
5
6
7
8
9
10
11
12
For details about accessing and using any of the menu commands
TRUNK 3: PORTS 2, 9, AND 16
16
13
14
15
16
17
18
19
20
TRUNK 1: PORTS 1, 11, AND 18
18
13
14
15
16
17
18
19
20
Port Trunking Configuration Example
Chapter 4: Ports and Trunking
EX2500
B
A
21
22
23
24
CON RESET
MGMT
EX2500
B
A
21
22
23
24
CON RESET
MGMT
45
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