IBM SG24-4817-00 manual 10 8285 LAN Emulation Specifications, IP over ATM RFC

This soft copy for use by IBM employees only.

5.1.10 8285 LAN Emulation Specifications

The 8285 is able alone to manage small LAN emulation networks.

Mechanisms and characteristics supported are:

5.1.10.1LAN Emulation Server (LES) and Broadcast Unknown Server (BUS)

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Number of LES: 2

Maximum number of client registrations per LES: 128

Maximum number of client registration for both LES: 128 Multicast trees used by LES and BUS

Each LES is using one control distribute VCC for the non-proxy LECs, and one control distribute VCC for the proxy LECs

Each BUS uses one multicast forward VCC for proxy and non-proxy LECs.

5.1.10.2 IP over ATM (RFC 1577)

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In-band management for SNMP/Telnet/Ping supported.

−Maximum transmission unit (MTU) size supported: 944 bytes. IP over ATM client imbedded.

−Maximum concurrent IP over ATM connections supported: 64.

5.1.10.3LAN Emulation Client (ATM Forum-Compliant LAN Emulation)

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Number of LECs: 2.

−Token-Ring LAN (802.5).

−Ethernet LAN (Ethernet 802.3 or Ethernet V2/DIX).

−Both LEC can run concurrently.

Maximum number of connections supported per LEC: 30

Maximum length of LANE information field (MTU):

Is depending on the the maximum service data unit (SDU) size supported on the corresponding ELAN.

88ATM Workgroup Solutions: Implementing the 8285 ATM Switch