IBM SG24-4817-00 - Manual (Page 87)

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