Avaya M770 - page 92

Chapter 6 Managing Virtual Ports
72 Avaya M770 ATM Switch User’s Guide
Setting the signalling VPC VPI range
On a root virtual port (which may have several VPIs associated with it) there is an
option of signalling virtual paths connections. Therefore, the user should identify
the range of VPIs that are associated with Signaled Virtual Paths (SVPs) and the rest
are associated with Permanent Virtual Paths (PVPs).
Note: Before setting up PVPs, or preparing the virtual port for SVPs, the module
hardware has to be configured to accept Virtual Paths connection. This is done
using the command “hardware vpcvpirnage” in which the user identifies the range
of VPIs that are associated with VP switching. For more information refer to
“Managing VPI range for VP switching” on page 99.
Note: You must disable the virtual port before you can change or reset any virtual
port parameters. For more information about how to disable a virtual port, see
“Disabling a virtual port” on page 65.
To set the signalling VPC VPI range used for SVPs on a root virtual port use the
vport set sigvpcvpirange command:
In this example, if the hardware was configured to have 4 bits for VPIs and 11 bits
for VCIs (“Managing the number of VPI and VCI bits” on page 98). And the VPIs for
VP switching was configured to be in the range of [6..15] (refer to “Managing VPI
range for VP switching” on page 99). Then the range of VPIs that is left for PVPs is
[7..15].
Command: M15-155s8:/> vp set sigvpcvpirange <root vport id> <range>
Example: Defining one vpi (6) to be used for SVPs on this virtual port (2.15.0):
M15-155s8:/>vp set sigvpcvpirange 2.15.0 [6..6]
Parameters: <root vport
id> Virtual port identifier in the form <slot>.<port>.0
<range> in the form: [<lower bound>..<upper bound>] <lower bound>
must be the minimum VPI number for VP switching as defined
by “hardware vpcvpirange”