Setting up permanent virtual circuits (PVC)
44
SmartNode 4830 DSL Series User Manual
4 • DSL Basic Configuration
•
Enter PPPoE mode and define a PPP session if the provider is using PPPoE.
Note
PPPoA is not supported.
Setting up permanent virtual circuits (PVC)
The modems currently available are using ATM to multiplex traffic over the DSL framing connection. ATM
allows you to have separate logical connections running in parallel. Those connections are called permanent
virtual circuits (PVC). All permanent virtual circuits use AAL5 framing.
Using PVC channels in bridged Ethernet mode
The PVC offers a bridged Ethernet connection as specified in RFC1483, which can be used as an IP link e.g.
with DHCP to assign the address, DNS server, and default gateway. To do this, you bind an IP interface to the
PVC like it would be done to a normal Ethernet port.
Using PVC channels with PPPoE
The RFC1483 bridged Ethernet connection can also be used for PPPoE. To do this, you enter PPPoE mode
within the PVC mode. All PPPoE commands apply as if the PVC was a regular Ethernet port.
Table 10. PVC Commands
Command
Purpose
Step 1
node(prt-dsl)[0/0]# [no] pvc vpi 8 vci 35
Creates PVC 8/35 and enters configuration
mode for this PVC. The "no"-variant deletes the
PVC configuration.
Step 2
node(pvc)[8/35]# encapsulation {llc|vc}
Sets the encapsulation to be used. Optionally
select either LLC encapsulation or VC multiplex-
ing for this PVC.
Default: llc
Table 11. PVC channels in bridged Ethernet mode
Command
Purpose
Step 1
node(pvc)[vpi/vci]# [no] bind interface <if-
name>
Associates an IP interface configuration with this
PVC.
Table 12. PVC channels in PPPoE mode
Command
Purpose
Step 1
node(pvc)[vpi/vci]# pppoe
Enters PPPoE configuration mode for this PVC.
Step 2
node(pppoe)# session <name>
Defines a PPPoE session.
Step 3
node(session)[<name>]# bind subscriber
<subscriber-name>
Links the session to a subscriber definition.
Step 4
node(session)[<name>]# no shutdown
Enables the PPPoE session
