Sun Microsystems 3U manual 1LAN Emulation Connections

LAN Emulation Connections

There are several connections established at all times when a host is a member of an emulated LAN. The following table outlines the various LAN Emulation-related connections that should be on a LAN Emulation client (LEC).

Note –Use the command qccstat(1M) to view all existing connections for a given interface.

TABLE 7-1LAN Emulation Connections

VCC	Endpoints	Comments
Configuration Direct	LEC —> LECS	This connection is not required to remain open
		after the initial join of the emulated LAN, and
		thus may time out after a host has joined the
		LAN.
Control Direct	LEC —> LES	Point-to-point connection over which the host
		may send LE ARP requests and receive
		responses from the LES.
Control Distribute	LES —> LEC	Point-to-multipoint connection over which the
		LES may send administrative information to all
		hosts. Hosts may not send on this connection.
Multicast Send	LEC —> BUS	Point-to-point connection over which the host
		may send broadcast messages to the BUS. A
		limited amount of data is also allowed on this
		connection.
Multicast Forward	BUS —> LEC	Point-to-multipoint connection over which the
		BUS sends broadcast messages. Hosts may not
		send on this connection.

72 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001