ADTRAN AOS Version R10.1.0 Command Reference Manual page 69

Command Reference Guide Common Commands
Technology Review
Creating an endpoint that uses a Layer 2 protocol (such as Frame Relay) is generally a four-step process:
Step 1:
Create the Frame Relay virtual endpoint (using the interface frame-relay command) and set the signaling
method (using the frame-relay lmi-type command). Also included in the Frame Relay virtual endpoint are
all the applicable Frame Relay timers logging thresholds, encapsulation types, etc. Generally, most Frame
Relay virtual interface parameters should be left at their default state. For example, the following creates a
Frame Relay interface labeled 7 and sets the signaling method to ansi.
(config)#interface frame-relay 7
(config-fr 7)#frame-relay lmi-type ansi
Step 2:
Create the subinterface and configure the permanent virtual circuit (PVC) parameters. Using the
subinterface, apply access policies to the interface, create bridging interfaces, configure dial-backup,
assign an IP address, and set the PVC data link connection identifier (DLCI). For example, the following
creates a Frame Relay subinterface labeled 22, sets the DLCI to 30, and assigns an IP address of
193.44.69.253 to the interface.
(config-fr 7)#interface fr 7.22
(config-fr 7.22)#frame-relay interface-dlci 30
(config-fr 7.22)#ip address 193.44.69.253 255.255.255.252
Step 3: (VALID ONLY FOR T1 INTERFACES)
Specify the group of DS0s used for signaling on the T1 interface by creating a TDM group. Group any
number of contiguous DS0s together to create a data pipe for Layer 2 signaling. Also use the tdm-group
command to specify the per-DS0 signaling rate on the interface. For example, the following creates a TDM
group labeled 9 containing 20 DS0s (each DS0 having a data rate of 56 kbps).
(config)#interface t1 1/1
(config-t1 1/1)#tdm-group 9 timeslots 1-20 speed 56
(config-t1 1/1)#exit
Step 4:
Make the association between the Layer 2 endpoint and the physical interface using the cross-connect
command. Supported Layer 2 protocols include Frame Relay and Point-to-Point Protocol (PPP). For
example, the following creates a cross-connect (labeled 5) to make an association between the Frame
Relay virtual interface (fr 7) and the TDM group configured on interface t1 1/1 (tdm-group 9).
(config)#cross-connect 5 t1 1/1 9 fr 7
The cross-connect command is also used by the PPP interface when using PPPoFR. PPPoFR can be
used with a single T1 circuit, when using Multilink PPP, or when using Multilink Frame Relay. Configuration
considerations vary according to the type of PPPoFR being used. For more information regarding
PPPoFR, refer to the PPPoFR Configuration Guide (article number 3114) available online at
https://supportforums.adtran.com.
60000CRG0-35E Copyright © 2012 ADTRAN, Inc. 69