Cabletron Systems SmartCell ZX-250, User Manual

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SmartCell ZX-250 User Guide 3-7
IP Over ATM and LANE Creating an Emulated LAN
3.2.3 Switch Clients
It is important to understand the concept of SmartCell ZX-250 switch client connections. A client connection is
actually a connection between the VLAN and the SmartCell ZX-250 CPU; this CPU connection appears as if the
switch is an end station on the VLAN. The SmartCell ZX-250 uses local clients to connect itself to the VLANs that it
supports.
This is analogous to a phone company that supports a communication system. Even though the phone company
maintains the circuits, a call to the phone company itself cannot be made unless the phone company has its own number
and connection on its own phone system. Similarly, VLAN membership (and the reachability) of a SmartCell ZX-250
on any particular VLAN depends upon whether the SmartCell ZX-250 has a local client connection for that VLAN.
Clients are created using the command
add laneclient
for LAN emulation, and
add ipatmclient
for IP over ATM.
For example, the following command adds a switch client to the ELAN elan1:
SmartCell ZX# add laneclient
ClientNumber(0) : 1
LanName(ELAN001) : elan1
ServerType(LECS) :
ServerAddress() :
IPAddress() : 128.213.77.95
NetMask(255.255.0.0) :
MTU(1516) :
SmartCell ZX#
Prior to creating this local client connection, end devices could communicate with each other through
elan1
, but they
could not communicate with the SmartCell ZX-250.