3com 5500 User Manual

The VLAN technology allows you to divide a broadcast LAN into multiple distinct 
broadcast domains, each as a virtual workgroup. Port-based VLAN is the simplest 
approach to VLAN implementation. The idea is to assign the ports on a switch to 
different VLANs, confining the propagation of the packets received on a port 
within the particular VLAN. Thus, separation of broadcast domains and division of 
virtual groups are achieved.

Figure 4   Network diagram for port-based VLAN configuration

 

Switch A and Switch B are connected each to a server and workstation. To 
guarantee data security for the servers, you need to isolate the servers from the 
workstations by creating VLANs. Allow the devices within a VLAN to communicate 
with each other but not directly with the devices in another VLAN.

# Create VLAN 101 on Switch A and add Ethernet 1/0/1 to VLAN 101.

[SwitchA] vlan 101

[SwitchA-vlan101] port Ethernet 1/0/1 

# Create VLAN 201 on Switch A and add Ethernet 1/0/2 to VLAN 201.

Server

Eth1/0/12

Eth1/0 /11

Eth1/0 /10

Eth1/0 /1

Eth1/0/2

Eth1/0 /3

Server

Host

Host

Switch 5500

Release V03.02.04 

All versions 

Switch 5500G

Release V03.02.04 

All versions 

Switch 4500

Release V03.03.00 

All versions

Switch 4210

 Release V03.01.00 

All versions