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This soft copy for use by IBM employees only.
This UFC provides one 100BaseFx Ethernet port for a connection to a
100BaseFx backbone segment or directly to a LAN station or server
equipped with a 100BaseFx Ethernet adapter as far as 2 km away:
•
Interface: ST
•
Cabling: Multimode fiber
- 1-Port ATM 155 Mbps Multimode Fiber UFC
This UFC provides an ATM interface that enables Ethernet-attached
users to interoperate with ATM-attached devices that comply with the
ATM Forum LAN Emulation specifications:
•
Interface: SC
•
Cabling: Multimode fiber
•
Supports Ethernet/IEEE 802.3 emulated LAN types.
− Support up to 1790 active Ethernet addresses per port, but no more than
10,000 addresses per module. These addresses can be aged-out based
upon configurable parameters at the port and module level.
− Support a bandwidth aggregation feature, EtherPipe, which allows
different LAN switching modules to be connected by up to four full-duplex
connections, providing up to 80 Mbps of bandwidth between 8271
switching modules.
− Gather statistics by:
- Port
- Connected station
- Switch
− Support Plug-and-Play installation by automatically initializing as a
multi-port transparent bridge. This allows the module to learn the
network addresses and eliminates all pre-installation configuration
requirements. In most cases, however, you will eventually want to
customize this initial configuration with such parameters as an IP
address, SNMP parameters, and port filters.
Table 8 and Table 9 provide comparisons of the token-ring modules and the
Ethernet modules, respectively.
Table 8. A Comparison of 8285 Token-Ring LAN Switch Modules
Module Feature Maximum Number of Ports
Copper Fiber
(RI/RO)
ATM 155
2-slot 8272 ATM/LAN Switch Module 5208 16 4 2
3-slot 8272 ATM/LAN Switch Module 5308 24 8 4
Table 9 (Page 1 of 2). A Comparison of 8285 Ethernet LAN Switch Modules
Module Feature Maximum Number of Ports
10Base-T 10Base-F 100BaseT 100BaseF ATM 155
2-slot 8271 ATM/LAN
Switch Module
5212 20 6 2 2 2
Chapter 4. IBM 8285 ATM Modules 75