Hitachi US7070447-001 manual LAN Emulation Client LEC

Models: US7070447-001

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Draft Level—Hitachi Confidential

Basic ATM Concepts

The components of an Emulated LAN (ELAN) consists of the following:

LAN Emulation Client (LEC)

LAN Emulation Configuration Server (LECS)

LAN Emulation Server (LES)

Broadcast and Unknown Server (BUS)

LAN Emulation Client (LEC)

The LAN Emulation Client (LEC) resides on the HiSpeed switch and acts as a proxy for devices connected to the Ethernet ports. In addition, the LEC responds to any LAN Emulation Address Resolution Protocol (LE_ARP) requests from host machines on the network.

LAN Emulation Configuration Server

The LAN Emulation Configuration Server (LECS) provides the LEC with the ATM address of the LAN Emulation Server (LES) to join an ELAN. It also provides the LEC with configuration information. The LEC can connect to the LECS in one of three ways:

Use ILMI

Use the LECS well-known address:

47007900000000000000000000:00A03E000001:00

Use a Config Direct VCC of 0.17 (one for each ELAN)

LAN Emulation Server (LES)

The LES registers and resolves MAC addresses to ATM addresses within the ELAN. The LES forwards the LEC response and helps the LEC locate the BUS, by responding to the LE_ARP request from the LEC.

Broadcast and Unknown Server (BUS)

The BUS forwards all broadcasts, multicast and unknown unicast traffic to all attached LAN Emulation Clients (LECs).

US7070447-001, Rev 01

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Hitachi US7070447-001 manual LAN Emulation Client LEC

US7070447-001 specifications

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