Configuring Connections 5-3

ATM Configuration
VPI Displays the Virtual Path IdentiÞer assigned
to the connection. Virtual Path IdentiÞers are
used to group virtual connections, allowing
for channel trunking between ATM switches.
Each VPI can be conÞgured to carry many
different channels (designated by VCIs)
between two points.
VCI Displays the Virtual Channel IdentiÞer
assigned to the connection; allowable values
are 0 - 1023 for each VPI. Remember, it is the
combined VPI and VCI designations
assigned to a channel that creates the
grouping of virtual connections.
Encapsulation Type Displays the method used to encapsulate
LAN packets on the selected circuit. Current
versions of ATM BRIM Þrmware use 802.3
VC-based multiplexing for bridging
protocols (designated VC MUX 802.3
Bridged); future versions will add support
for ATM Forum LAN Emulation and
CabletronÕs SecureFast Switching. You may
also see some connections assigned a type of
ÒotherÓ; these are default connections that
cannot be modiÞed or deleted.
Status Displays the current administrative status of
the connection: Enabled or Disabled. For
current versions of Þrmware, all connections
are enabled by default, and cannot be
disabled.
UpTime Displays the length of time the connection
has been enabled.
Configuring Connections
You can use the command buttons (Add, Delete or Refresh) at the bottom of the
Current ATM Connections window to add, modify or delete a Permanent Virtual
Circuit (PVC) or refresh the window.
Add Adds a new connection or modiÞes an
existing one, using the parameters entered in
the Þelds below the list box. A conÞrmation
window will appear for additions and
modiÞcations.