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The following steps outline configuring a Frame Relay virtual interface (labeled 1) using a single
DLCI back to the corporate router (defined as DLCI 16).
1. At the (config)# prompt, enter interface fr 1 to create a Frame Relay virtual interface
labeled 1.
2. If the default setting of ansi was changed, enter frame-relay lmi-type ansi to configure
Frame Relay virtual interface 1 to use ANSI (Annex D) signaling.
3. Enter no shutdown to activate the virtual interface to pass data.
4. Enter exit to return to the Global Configuration mode.
5. The router has a factory default PPP 1 interface. Enter the command no ppp 1 to remove
this interface.
1. At the (config)# prompt, enter interface fr 1.16
to create a PVC assigned to Frame Relay
virtual interface 1. This activates the configuration parameters for the PVC. Your prompt
should now display (config-fr 1.16)#.
2. Enter frame-relay interface-dlci 16
to assign DLCI 16 to this PVC.
3. Enter ip address 192.168.72.1
255.255.255.252 to assign an IP address of 192.168.72.1 for
this PVC using a 24-bit subnet mask.
4. Enter exit to return to the Global Configuration mode.
5. If you are configuring the NetVanta for use in a Frame Relay application and have completed
this step skip to Create the Cross-Connect below.
The following steps show how to configure a PPP virtual interface (labeled 1) to the corporate
router. Skip to Create the Cross-Connect below if you are using Frame Relay.
1. At the (config)# prompt, enter interface ppp 1
to create a PPP virtual interface labeled 1.
2. Enter ip address 192.168.72.1
255.255.255.252 to assign an IP adddress to the PPP
endpoint using a 30-bit mask.
3. Enter no shutdown to activate the virtual interface to pass data
4. Enter exit to return to the Global Configuration mode.
1. At the (config)# prompt, enter cross-connect 1
T1 1/1 frame-relay 1 to connect the DDS
network connection (dds 1/1) to the virtual Frame Relay interface (fr 1.16).
Alternately,
2. Enter cross-connect 1
T1 1/1 ppp 1 to connect the DDS network connection (dds 1/1) to the
virtual PPP interface (ppp 1).
Configure the Frame Relay Virtual Interface
Create the PVC and Assign an IP Address
The default encapsulation is RFC1490 or IETF. Make certain the remote router uses the
same encapsulation for Frame Relay.
Configure the Virtual PPP Interface
Create the Cross-Connect
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