Chapter 5
54
5.4.5.2.6
<channel> pvc
Syntax:
<channel> pvc [[<port>] <vpi>] <vci> [ip | mac] [listen]
<channel> pvc none
Description:
Attach an ATM PVC to the given PPP channel. The port as well
as the VPI (default is 0), and the VCI can be specified (only for a
multi-port device).
The allowable range of the ports, VPI and VCI depends on the
ATM driver. Normal limits are 0 only for VPI and 1 to 1023 for
VCI.
If a single argument none is supplied, any current connection is
torn down. This is equivalent to svc none on the channel.
In the PPP state machine, providing a link of this form causes
the link to be ‘up’. Enable must also be used, to allow the link to
become operational.
The IP or mac indicates which form of data is transported over
the connection: one is IP data (controlled by the IPCP protocol),
or it is the MAC data (for BCP). If neither is provided, IP is
assumed. If the channel is not linked to an interface, and the
channel is for IP data, the channel is linked to interface 1.
If the channel is not linked to an interface, and the channel is for
MAC data, the channel is linked to interface 2. Providing a PVC
setting changes any SVC setting. See the svc command.
It is possible for a PVC to become ‘down’ in the PPP state
machine even though the PVC is still there, for example, due to
an authentication failure. If in this state, an incoming packet will
cause the PPP state machine to go ‘up’.
If listen is specified then this is the server end of a PVC. It will
not send out PPP Configure Requests until it first receives a
packet over the PVC. When a connection is torn down it goes
returns to this state.
Use the info command to read this information. By default, a
channel has no connection information.
