Page 664

Configuring VLANs

621

Now that we can see the three VLANs created, we can assign switch ports

to a single VLAN. Each port can only be part of one VLAN. Trunking, which
I will cover in a minute, makes a port available to more than one VLAN
at a time.

Assigning Switch Ports to VLANs

You can configure each port to be in a VLAN by using the vlan-membership
command. You can only configure VLANs one port at a time. There is no com-
mand to assign more than one port to a VLAN at a time with the 1900 switch.

Remember that you can configure either static memberships or dynamic

memberships on a port. In this book, I only cover the static VLAN mem-
berships.

In the following example, I configure interface 2 to VLAN 2, interface 4

to VLAN 3, and interface 5 to VLAN 4.

1900EN#config t

Enter configuration commands, one per line. End with CNTL/Z

1900EN(config)#int e0/2

1900EN(config-if)#vlan-membership ?

dynamic Set VLAN membership type as dynamic

static Set VLAN membership type as static

1900EN(config-if)#vlan-membership static ?

<1-1005> ISL VLAN index

1900EN(config-if)#vlan-membership static 2

1900EN(config-if)#int e0/4

1900EN(config-if)#vlan-membership static 3

1900EN(config-if)#int e0/5

1900EN(config-if)#vlan-membership static 4

1900EN(config-if)#exit

1900EN(config)#exit

Now, type show vlan again to see the ports assigned to each VLAN.

1900EN#sh vlan

VLAN Name Status Ports

--------------------------------------

1 default Enabled 1, 3, 6-12, AUI, A, B

2 sales Enabled 2

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