Permanent Virtual Circuits; Lan Emulation - Allied Telesis AT-4016TR Operation Manual

Permanent Virtual
Circuits

LAN Emulation

Figure 5: ATM Topology
If connections are established manually through either network management
or remote communications, the channels are called Permanent Virtual
Circuits (PVCs). PVCs are implemented through either a management
program termed Omega or a remote management station. With this release,
each switch must have a PVC connection between itself and every other
switch.
Analogous to a leased or dedicated real circuits found in packet-based
networks, PVCs must be physically configured by a network administrator
from the ATM switch to both establish and maintain ATM connectivity.
An Emulated LAN (ELAN) allows you to configure a network through
software instead of rearranging physical cables.
ELANs are created and managed using Omega software management
screens.
Figure 5 shows a typical ATM network topology.
Ethernet Switch with ATM Access
ATM PORT ALARMS NETWORK LOAD PCMCIA
"A"
ATM
Switch
ATM
Switch
"E"
Ethernet Switch with ATM Access
ATM PORT ALARMS NETWORK LOAD PCMCIA RS-232 POWER SUPPLY
Station 1
Server
ATM inter-switch connection
Single physical link with
multiple PVCs
Ethernet Switch with ATM Access
RS-232 POWER SUPPLY
ATM PORT ALARMS NETWORK LOAD
ATM
Switch
ATM
ATM
Cloud
Switch
ATM
Ethernet Switch with ATM Access
Switch
ATM PORT
AT-S7/AT-S9 Operations Manual
PCMCIA RS-232 POWER SUPPLY
"B"
"C"
Ethernet Switch with ATM Access
ATM PORT ALARMS NETWORK LOAD PCMCIA RS-232 POWER SUPPLY
Server
"D"
ALARMS NETWORK LOAD PCMCIA RS-232 POWER SUPPLY
Station 2
5