Operation Manual

Getting Started
22
The VPI screen is shown below and is accessed, of course, from the System
Administration submenu.
To use the LAN emulation capabilities of ATM, you establish logical identities
for LANs, paths, channels, and MAC-addressed nodes on your network(s).
Virtual Path Identifier. The Virtual Path Identifier (VPI) for the
AT-TS95TR is set in the LAN Emulation menu (PVC definitions).
Virtual Channel Identifiers. Virtual Channel Identifiers (VCIs) are also
defined in the LAN Emulation menu (PVC definitions). There are 992 VCIs
available between 32 and 1,024 (VCIs between 1 and 31 have been reserved
for ATM management cell purposes). These are used by ATM in the cell
header to direct packets to their correct destinations. (You can also use the
LAN Emulation menu to assign ELAN membership to nodes.)
LAN Emulation Menu
This release implements multiple Emulated LANs. Although each switch can
support up to 64 Emulated LANs, each Emulated LAN requires its own PVC
between units.
Use the LAN Emulation menu to set up Emulated LANs as follows:
1. Ensure that the VPI is set to zero (
Ø) in the ATM parameters option
within the System Administration Menu (Ø is the only VPI that is
supported at this time).
Once the ATM parameters are established, you are ready to configure
Emulated LANs.