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Using Native Mode LAN Services

117351-B Rev. 00

5-3

In Figure 5-1, for example, consider what happens when a member of the Star

Closed User Group on LAN A sends a frame to another member of the Star group

located on LAN C.

1. The frame, properly addressed, enters Bridge 1 through NML Port 1.

2. Port 1 labels the frame with the Star CUGID.

3. Bridge 1 forwards the frame to Bridge 2 over the FDDI trunk.

4. The frame attempts to exit Bridge 2 through Port 6. Port 6 examines the

CUGID on the frame.

The CUGID on the frame matches the CUGID on the port’s access list. Port 6

forwards the frame to LAN C in the Star Closed User Group.

Defining a Closed User Group

To define a closed user group:

Select a CUGID for the closed user group.

Create an NML port for each LAN in the closed user group by adding the

NML protocol to an existing bridge circuit.

See Configuring and Managing Routers with Site Manager for details.

Assign the group CUGID to each port and specify other NML port

parameters.

See “NML Add Security Range Parameters

” on page 5-14 for details.

Provide each NML port with an access list containing the group CUGID.

See “Assigning an Access List to a Port

” on page 5-12 for details.

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Avaya Configuring Bridging Services Manual do Utilizador Página 173