IBM eServer xSeries 345 Type 8670, User Manual, Page: 43 / 68

Virtual LAN mode
A virtual LAN (VLAN) is a logical grouping of network devices put together as a
LAN, regardless of their physical grouping or collision domains. Using VLANs
increases network performance and improves network security.
VLANs offer you the ability to group users and devices together into logical
workgroups. This can simplify network administration when connecting clients to
servers that are dispersed geographically across a building, campus, or enterprise
network.
Typically, VLANs are configured at the switch and any computer can be a member
of one VLAN per installed network adapter. The Ethernet controller supersedes this
by communicating directly with the switch, enabling multiple VLANs on a single
network adapter (up to 64 VLANs).
When you set up VLAN membership, the Ethernet controller must be attached to a
switch that has VLAN capability. You also need to use Windows 2000, Windows
NT
®
4.0 or later, or Novell NetWare 4.1x or later.
Notes:
1. Windows NT versions prior to 4.0 do not support VLANs.
2. VLANs require Windows NT 4.0 with Service Pack 3.0 and the network driver
interface specifications (NDIS) driver hotfix from Microsoft.
3. In Windows NT, VLANS cannot be implemented on controllers that have been
configured for teaming options. Netware can support teaming options and
VLANS on the same adapters.
Complete the following steps to join a VLAN from Windows NT 4.0:
1. Create a VLAN on the switch. Use the parameters you assign there to join the
VLAN from the server. See the switch documentation for more information.
2. Double-click the Start Proset icon in the Control Panel window.
3. On the Adapters page, right click on the adapter that you want to be on the
VLAN.
4. In IBMSet, click Add VLAN for the first adapter or click Join VLAN for
remaining adapters. Note that VLANs cannot be assigned to adapters that are
already defined to have an adapter teaming option.
5. Type the VLAN ID and VLAN name. The VLAN ID must match the VLAN ID of
the switch. The VLAN name is for information only and does not need to match
the name on the switch.
6. Repeat steps 3 through 5 for each VLAN you want the server to join. The
VLANs you add are listed on the Adapters page.
7. Click Close and restart the server.
Chapter 2. Configuring your server
31