Configuring Trunking; Guidelines For Creating Trunks - 3Com 3C16476BS-US - Baseline 2250 Plus Switch User Manual

36 C 4: C
HAPTER ONFIGURING THE
Figure 19 Uplink VLAN Configuration
Endstation
in VLAN 1 (Desktop)
Endstation
in VLAN 2
(Desktop)
Switch 1 Port 16 in VLANs 1 and 2 (Uplink)
Switch 2 Port 8 in VLANs 1 and 2 (Uplink)
Endstation
in VLAN 2
(Desktop)
Endstation
in VLAN 1 (Desktop)
To set up the configuration shown in
the following:
Create VLAN2 on both Switch 1 and Switch 2, and
1
assign the same name to it. You need not create
VLAN1 since it exists by default.
On Switch 1, set the ports that you want to be part of
2
VLAN2 to Desktop mode. Set one port (for example,
port 16) to Uplink mode.
Click Apply.
On Switch 2, set the ports that you want to be part of
3
VLAN2 to Desktop mode. Set one port (for example,
port 8) to Uplink mode.
S
WITCH
Server
in VLAN 1 (Desktop)
Server
in VLAN 2 (Desktop)
Figure 19, do
Click Apply.
Connect the uplink port on Switch 1 (in this example,
4
port 16) to the uplink port on Switch 2 (in this exam-
ple, port 8).
Those ports on Switch 1 that are members of VLAN2
can now communicate with those ports on Switch 2
that are members of VLAN2.

Configuring Trunking

Trunking, also called "link aggregation", refers to
bonding multiple ports into a single group to effec-
tively combine the bandwidth into a single connec-
tion or a "trunk". If you are connecting the Switch to
another switch or to an Internet backbone, you can
aggregate links on the Switch to increase throughput
and prevent packet loopback between switches.
For link aggregation to work, the trunks must be con-
figured on both ends (switches).
The Switch does not support the Link Aggregation
Control Protocol (LACP), which is specified in IEEE
802.3ad.

Guidelines for Creating Trunks

Any port on the Switch can be used for creating a
■
trunk.
This switch supports a maximum of four trunks.
■
Each trunk may contain up to eight members.
■
A port may only be a member of one trunk at any
■
one time.