Configuring an ATM-over-ADSL Interface

The configuration pages allow you to configure ATM-over-ADSL interfaces on the device.

To configure an ATM-over-ADSL interface:

  1. In the J-Web user interface, select Configure > Interfaces.

    A list of the network interfaces present on the device is displayed.

  2. Select the at-pim/0/port interface name for the ADSL port you want to configure.

    The ATM-over-ADSL configuration page is displayed, as shown in Figure 10.

    Figure 10: ATM-over-ADSL Interfaces Configuration Page

    ATM-over-ADSL Interfaces
Configuration Page
  3. Enter information into the ATM-over-ADSL configuration pages, as described in Table 14.
  4. From the ATM-over-ADSL configuration main page, click one of the following buttons:
    • To apply the configuration and stay on the ATM-over-ADSL configuration main page, click Apply.
    • To apply the configuration and return to the configuration page, click OK.
    • To cancel your entries and return to the Configure Interfaces page, click Cancel.
  5. To verify that the ATM-over-ADSL interface is configured properly, see the JUNOS Enhanced Services Interfaces and Routing Configuration Guide.

Table 14: ATM-over-ADSL Interface Configuration Pages Summary

Field

Function

Your Action

Configuring Logical Interfaces

Logical Interfaces

Lists the logical interfaces for this ATM-over-ADSL physical interface.

  • To add a logical interface, click Add.
  • To edit a logical interface, select the interface from the list.
  • To delete a logical interface, select the check box next to the name and click Delete.
Adding or Editing a Logical Interface

Add logical interfaces

Defines one or more logical units that you connect to this physical ADSL interface.

Click Add.

Logical Interface Description

(Optional) Describes the logical interface.

Type a text description of the logical interface to more clearly identify it in monitoring displays.

Encapsulation

Specifies the type of encapsulation on the DSL logical interface.

From the list, select one of the following types of encapsulations.

For ATM-over-ADSL interfaces that use inet (IPv4) protocols only, select one of the following:

  • ATM VC multiplexing—Use ATM virtual circuit multiplex encapsulation.
  • ATM NLPID—Use ATM network layer protocol identifier (NLPID) encapsulation.
  • Cisco-compatible ATM NLPID—Use Cisco NLPID encapsulation.
  • Ethernet over ATM (LLC/SNAP)—For interfaces that carry IPv4 traffic, use Ethernet over logical link control (LLC) encapsulation. You cannot configure multipoint interfaces if you use this type of encapsulation.

For ATM-over-ADSL for PPP-over-ATM (PPPoA) interfaces only, select one of the following:

  • ATM PPP over AAL5/LLC—Use AAL5 logical link control (LLC) encapsulation.
  • ATM PPP over Raw AAL5—Use AAL5 multiplex encapsulation.

For other encapsulation types on the ATM-over-ADSL interfaces, select one of the following:

  • PPPoE over ATM (LLC/SNAP)—Use PPP over Ethernet over ATM LLC encapsulation. When you use this encapsulation type, you cannot configure the interface address. Instead you configure the interface address on the PPP interface.
  • Ethernet over ATM (LLC/SNAP)—Use ATM subnetwork attachment point (SNAP) encapsulation.

VCI

Configures the ATM virtual circuit identifier (VCI) for the interface.

In the VCI box, type the number for the VCI.

Add IPv4 address prefixes and destinations

Specifies one or more IPv4 addresses and destination addresses.

Click Add.

IPv4 Address Prefix

Specifies an IPv4 address for the interface.

Type an IPv4 address and prefix. For example:

10.10.10.10/24

Destination Address

Specifies the destination address.

  1. Type an IPv4 address for the destination.
  2. Click OK.
Configuring Physical Interface Properties

Physical Interface Description

(Optional) Adds supplementary information about the physical ATM-over-ADSL interface.

Type a text description of the physical ATM-over-ADSL interface to more clearly identify it in monitoring displays. Specify that it is an ADSL interface.

MTU (bytes)

Specifies the maximum transmission unit (MTU) size of a packet for the ATM-over-ADSL interface.

Type a value from 256 to 9192.

Encapsulation

Selects the type of encapsulation for traffic on this physical interface.

From the list, select the type of encapsulation for this ATM-over-ADSL interface:

  • ATM permanent virtual circuits—Use this type of encapsulation for PPP over ATM (PPPoA) over ADSL interfaces. This is the default encapsulation for ATM-over-ADSL interfaces.
  • Ethernet over ATM encapsulation—Use this type of encapsulation for PPP over Ethernet (PPPoE) over ATM-over-ADSL interfaces that carry IPv4 traffic.

VPI

Configures the ATM virtual path identifier for the interface.

Type a VPI value between 0 and 255.

Configuring ADSL Options

Operating Mode

Specifies the type of DSL operating mode for the ATM-over-ADSL interface.

From the list, select one of the following types of DSL operating modes; for example auto.

For Annex A or Annex B, select one of the following:

  • auto—Configure the ADSL interface to auto negotiate settings with the DSLAM located at the central office.

    For Annex A, the ADSL interface trains in either ANSI T1.413 Issue II mode or ITU G.992.1 mode.

    For Annex B, the ADSL interface trains in ITU G.992.1 mode.

  • itu-dmt-bis—Configure the ADSL interface to train in ITU G.992.3 mode. The ADSL interface trains in ITU G.992.5 mode.
  • adsl2plus—Configure the ADSL interface to train in ITU G.992.5 mode. You can configure this mode only when it is supported on the DSLAM.

For Annex A and Annex B, select the following:

  • itu-dmt—Configure the ADSL interface to train in ITU G.992.1 mode.
  • adsl2plus—Configure the ADSL interface to train in ITU G.992.5 mode. You can configure this mode only when it is supported on the DSLAM.
  • itu-dmt-bis—Configure the ADSL interface to train in ITU G.992.3 mode. The ADSL interface trains in ITU G.992.5 mode.

For Annex A only, select the following:

  • ansi-dmt—Configure the ADSL interface to train in ANSI T1.413 Issue II mode.

For Annex B only, select the following:

  • itu-annexb-ur2—Configure the ADSL line to train in G.992.1 Deutsche Telekom UR-2 mode.