Setup guide

3-23
Cisco 6400 Software Setup Guide
OL-1183-04
Chapter3 Basic NRP Configuration
Permanent Virtual Circuits
To configure a PVC on an ATM subinterface, complete the following steps beginning in global
configuration mode:
Example—PVC on a Point-to-Point Subinterface
In the following example, the ATM 0/0/0.20 subinterface is configured as a point-to-point interface.
Attempting to configure a second PVC results in the “P2P Interface already has VC” message.
Router(config)# interface atm 0/0/0.20 point-to-point
Router(config-subif)# pvc 0/40
Router(config-if-atm-vc)# exit
Router(config-subif)# pvc 0/41
P2P Interface already has VC
Router(config-subif)# exit
The previous example results in the following configuration fragment:
!
interface atm 0/0/0.20 point-to-point
pvc 0/40
!
Example—PVCs on a Multipoint Subinterface
In the following example, the ATM 0/0/0.21 subinterface is a multipoint interface, so it accepts multiple
PVCs.
Router(config)# interface atm 0/0/0.21 multipoint
Router(config-subif)# pvc 0/50
Router(config-if-atm-vc)# exit
Router(config-subif)# pvc 0/51
Router(config-if-atm-vc)# exit
The previous example results in the following configuration fragment:
!
interface atm 0/0/0.21 multipoint
pvc 0/50
!
pvc 0/51
!
!
Command Description
Step1
Router(config)# interface atm 0/0/0.subinterface
{multipoint | point-to-point}
Specifies the NRP ATM subinterface. Also
selects multipoint or point-to-point subinterface
type.
Step2
Router(config-subif)# pvc [name] vpi/vci
Configures a new ATM PVC by assigning a
name (optional) and VPI/VCI values.
Step3
Router(config-if-atm-vc)# encapsulation
{aal5snap | aal5nlpid}
or
Router(config-if-atm-vc)# encapsulation
{aal5mux ppp | aal5autoppp | aal5ciscoppp}
virtual-template number
Configures the ATM adaptation layer (AAL)
and encapsulation type for a PVC. May
configure a PVC to use a virtual template
1
as the
default PPP interface configuration.
1. A virtual template assigns PPP features (such as authentication and IP address assignment method) to a PVC. Virtual templates are used when
configuring PPP over ATM (PPPoA), PPP over Ethernet (PPPoE), and Layer 2 Tunneling Protocol (L2TP).