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Chapter 7: VLAN Configuration
A VLAN is a group of end stations with a common set of requirements, independent of physical location. VLANs have
the same attributes as a physical LAN but allow you to group end stations even if they are not located physically on
the same LAN segment.
Usually VLANs are associated with IP subnetworks. For example, all the end stations in a particular IP subnet belong
to the same VLAN. Traffic between VLANs is assigned. LAN port VLAN membership is assigned manually on an
port-by-port basis. VLANs can be defined as either Layer 2 or Layer 3 and a VLAN cannot switch between the two
layers. Before you create a VLAN, you must decide how they will be created and a naming convention to ensure
duplicate VLAN names are not used.
Up to 4094 Virtual LANs (VLANs) are supported on the IntraCore IC36240. The default VLAN with VLAN ID (VID) 1.
All switchports (eth1–eth16) are included in the default VID 1. The default VID 1 cannot be deleted.
7.1 Creating or Modifying a VLAN
Enter the following commands beginning in configuration mode:
Command Purpose
vlan vid
Enter a VLAN ID (2–4094), which that accesses config-vlan mode.
Enter a new VLAN ID to create a VLAN, or enter an existing VLAN ID
to modify a VLAN.
name vlan-name
Enter a name for the VLAN (optional).
End
Return to Enable mode.
no vlan vid
Enter a VLAN ID (2-4094) to be removed.
Switchports are Layer 2-only interfaces associated with a physical port. A switchport is used as an access port.
Switch ports are used for managing the physical interface and associated Layer 2 protocols and do not handle routing
or bridging. Ports 1–16 on the IC36240 are Ethernet ports. The following example demonstrates how to enter the
interface configuration mode for port 16:
Switch(config)# interface eth16
Switch(config-if-eth16)#
From the interface configuration mode, use the switchport command to configure the access port or the Class of
Service (CoS) default priority for the port.
An access port belongs to and carries the traffic of only one VLAN (see Virtual Interfaces, below.) Traffic is received
and sent in native formats with no VLAN tagging. Traffic arriving on an access port is assumed to belong to the VLAN
assigned to the port. If an access port receives a tagged packet (802.1Q tagged), the packet is dropped, and the
source address is not learned. Static access ports are manually assigned to a VLAN.
Switch(config-if-eth16)# switchport access vlan <1-4093>
66 Asante IntraCore IC36240 User’s Manual