IBM SG24-4817-00 manual LAN Switching Modules, Description

This soft copy for use by IBM employees only.

4.9 LAN Switching Modules

Attention

The following section is included as a preview of module support that might become available in 1997.

The 8285 is capable of supporting the following LAN switching modules:

•Token-Ring:

−2-slot 8272 ATM/LAN Switch Module

−3-slot 8272 ATM/LAN Switch Module

−2-slot 8272 LAN Switch Module with the following:

-8272 LAN Switch ATM Backplane Upgrade￿1￿

−3-slot 8272 LAN Switch Module with the following:

-8272 LAN Switch ATM Backplane Upgrade￿2￿

•Ethernet:

−2-slot 8271 ATM/LAN Switch Module

−3-slot 8271 ATM/LAN Switch Module

−2-slot 8271 LAN Switch Module with the following:

-8271 LAN Switch ATM Backplane Upgrade￿3￿

−3-slot 8271 LAN Switch Module with the following:

-8271 LAN Switch ATM Backplane Upgrade￿4￿

Notes:

￿1￿Becomes functionally identical to 2-slot 8272 ATM/LAN Switch Module.

￿2￿Becomes functionally identical to 3-slot 8272 ATM/LAN Switch Module.

￿3￿Becomes functionally identical to 2-slot 8271 ATM/LAN Switch Module.

￿4￿Becomes functionally identical to 3-slot 8271 ATM/LAN Switch Module.

4.9.1 Description

The LAN switch modules that could be supported by the 8285 provide existing LAN users high-performance, cost-effective access to the ATM backbone as well as media-speed LAN switching for microsegmentation.

Direct ATM backplane connectivity allows segments of LAN users to be interconnected to other LANs users segment via LAN switching or high-speed ATM switching.

These modules feature the following:

•Common Features:

−Support media-speed transmission on all ports simultaneously, even in full-duplex mode

−Support half- or full-duplex transmission on each port independently

Chapter 4. IBM 8285 ATM Modules 71