Sun Microsystems 3U - Manual (Page 94)

72 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001
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 7-1 LAN 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.