Configuring the RX Speed on the LAC

You can configure the E Series LAC to generate the L2TP RX Connect-Speed AVP [38], which is transmitted to the LNS in the Incoming-Call-Connected message. The AVP carries one of the following subscriber access interface speeds based on the configuration:

• L2C RAM actual upstream rate
• Configured advisory receive speed
• Calculated transmit speed

By default, the receive speed is set equal to the calculated transmit speed and the generation of the RX Connect-Speed AVP is suppressed. The AVP can be used to generate the RADIUS Connect-Info attribute [77] on the LNS.

To set up the router to generate the RX Connect-Speed AVP [38], perform all or any one of the following steps:

• Configure the advisory receive speed:

  Note: The configured advisory receive speed is sent in the RX Connect-Speed AVP, only if the generation of the AVP for transmitting the actual upstream rate is disabled.

  • On the ATM subinterface:
    host1(config-subif)#atm atm1483 advisory-rx-speed 2000

    For more information about configuring the advisory speed, see Configuring ATM in the JunosE Link Layer Configuration Guide.

  • On the VLAN subinterface:
    host1(config-subif)#vlan advisory-rx-speed 2000
• Enable generation of the RX Connect-Speed AVP when the receive speed is set equal to the calculated transmit speed.

  Note: The calculated transmit speed is sent in the RX Connect-Speed AVP only if the advisory receive speed is not configured and the generation of the AVP for transmitting the actual upstream rate is disabled.

  host1(config)#l2tp rx-connect-speed-when-equal
• Enable generation of the RX Connect-Speed AVP when you want to send the L2C RAM actual upstream rate in the AVP.

  Note: The actual upstream rate is sent in the AVP even if the advisory receive speed is configured and the generation of the AVP is enabled for sending the calculated transmit speed.

  host1(config)#l2tp rx-connect-speed-upstream-rate