Connection Management
Software Specifications
5-2
Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
The number of connections per system is as follows:
■
Point-to-point (PVC):
8,000 connections
■
Point-to-multipoint (PVC): 1,000 connections
■
Point-to-point (SVC):
4,000 connections
■
Point-to-multipoint (SVC): 1,000 end points
The ATM Switch also supports two connections, Soft PVC and tunneling, that take
advantage of the characteristics of PVC and SVC mentioned above.
Soft PVC is a PVPC (Permanent Virtual Path Connection) or a PVCC (Permanent
Virtual Circuit Connection) that is established by SVC procedure over several
switches.
The ATM Switch allows the user to register up to 64 Soft PVCs. To use the Soft
PVC service, the remote side switch must be a NETNEX ATM Switch.
Tunneling is a connection that is established over a PVP (Permanent Virtual Path)
network (e.g., existing public network that does not support SVC).
A VP (Virtual Path) is established in a physical link that connects the switches in a
PVP network, and the VP is used as a tunneling path. The switch (edge switch) that
is adjacent to the PVP network establishes PVCs in the tunneling path and sends
SVC setup messages. The ATM Switch allows the user to register up to 64 tunneling
paths.
Figure 5-1
is a conceptual diagram of the connections supported by the ATM
Switch.
Figure 5-1: The ATM Switch Connections
Connections are established by inputting commands from a MAT connected to the
ATM Switch. The information on the established connection can be read by a
command from the MAT or sending a GET request from an NMS. (For details on
the commands, refer to the ATM Command Manual.)
