Configuring VDSL2 Interfaces

 

Very-high-bit-rate digital subscriber line (VDSL) provides faster data transmission over a single flat untwisted or twisted pair of copper wires. Te below set of topics discuss the overview of VDSL2, its network deployment topology, the interface support on SRX series devices and examples of configuring VDSL2 interfaces and on different modes for SRX series devices.

VDSL2 Interface Technology Overview

Very-high-bit-rate digital subscriber line (VDSL) technology is part of the xDSL family of modem technologies that provide faster data transmission over a single flat untwisted or twisted pair of copper wires. The VDSL lines connect service provider networks and customer sites to provide high bandwidth applications (triple-play services) such as high-speed Internet access, telephone services like VoIP, high-definition TV (HDTV), and interactive gaming services over a single connection.

VDSL2 is an enhancement to G.993.1 (VDSL) and permits the transmission of asymmetric (half-duplex) and symmetric (full-duplex) aggregate data rates up to 100 Mbps on short copper loops using a bandwidth up to 30 MHz. The VDSL2 technology is based on the ITU-T G.993.2 (VDSL2) standard, which is the International Telecommunication Union standard describing a data transmission method for VDSL2 transceivers.

The VDSL2 uses discrete multitone (DMT) modulation. DMT is a method of separating a digital subscriber line signal so that the usable frequency range is separated into 256 frequency bands (or channels) of 4.3125 KHz each. The DMT uses the Fast Fourier Transform (FFT) algorithm for demodulation or modulation for increased speed.

VDSL2 interface supports Packet Transfer Mode (PTM). The PTM mode transports packets (IP, PPP, Ethernet, MPLS, and so on) over DSL links as an alternative to using Asynchronous Transfer Mode (ATM). PTM is based on the Ethernet in the First Mile (EFM) IEEE802.3ah standard.

VDSL2 provides backward compatibility with ADSL, ADSL2, and ADSL2+ because this technology is based on both the VDSL1-DMT and ADSL2/ADSL2+ recommendations.

VDSL2 Vectoring Overview

Starting in Junos OS Release 15.1X49-D50, VDSL2 vectoring is supported. Vectoring is a transmission method that employs the coordination of line signals that reduce crosstalk levels and improve performance. It is based on the concept of noise cancellation, like noise-cancelling headphones. The ITU-T G.993.5 standard, "Self-FEXT Cancellation (Vectoring) for Use with VDSL2 Transceivers,” also known as G.vector, describes vectoring for VDSL2.

The scope of Recommendation ITU-T G.993.5 is specifically limited to the self-FEXT (far-end crosstalk) cancellation in the downstream and upstream directions. The FEXT generated by a group of near-end transceivers and interfering with the far-end transceivers of that same group is canceled. This cancellation takes place between VDSL2 transceivers, not necessarily of the same profile.

VDSL2 Network Deployment Topology

In standard telephone cables of copper wires, voice signals use only a fraction of the available bandwidth. Like any other DSL technology, the VDSL2 technology utilizes the remaining capacity to carry the data and multimedia on the wire without interrupting the line's ability to carry voice signals.

This example depicts the typical VDSL2 network topology deployed using SRX Series Services Gateways.

A VDSL2 link between network devices is set up as follows:

  1. Connect an end-user device such as a LAN, hub, or PC through an Ethernet interface to the customer premises equipment (CPE) (for example, an SRX Series device).
  2. Connect the CPE to a DSLAM.
  3. The VDSL2 interface uses either Gigabit Ethernet or fiber as second mile to connect to the Broadband Remote Access Server (B-RAS) as shown in Figure 1.
  4. The ADSL interface uses either Gigabit Ethernet (in case of IP DSLAM] as the “second mile” to connect to the B-RAS or OC3/DS3 ATM as the second mile to connect the B-RAS as shown in Figure 2.Note

    The VDSL2 technology is backward compatible with ADSL. VDSL2 provides an ADSL interface in an ATM DSLAM topology and provides a VDSL2 interface in an IP or VDSL DSLAM topology.

    The DSLAM accepts connections from many customers and aggregates them to a single, high-capacity connection to the Internet.

Figure 1 shows a typical VDSL2 network topology.

Figure 1: Typical VDSL2 End-to-End Connectivity and Topology Diagram
Typical
VDSL2 End-to-End Connectivity and Topology Diagram

Figure 2 shows a backward-compatible ADSL topology using ATM DSLAM.

Figure 2: Backward-Compatible ADSL Topology (ATM DSLAM)
Backward-Compatible
ADSL Topology (ATM DSLAM)

VDSL2 Interface Support on SRX Series Devices

The VDSL2 interface is supported on the SRX Series devices listed in Table 1. (Platform support depends on the Junos OS release in your installation.)

Table 1: VDSL2 Annex A and Annex B Features

Features

POTS

Devices

Integrated VDSL Module (SRX110-POTS)

VDSL Mini-PIM (SRX210, SRX220, SRX240, SRX320, SRX340)

Supported Bandplans

997/998

Supported standards

ITU-T G.993.2 and ITU-T G.993.5 (VDSL2)

Used in

North American network implementations and European network implementations

ADSL backward compatibility

ADSL G992.5-A (ADSL Annex A)

* ADSL Annex B support is not available on VDSL2 Mini-PIMs.

VDSL2 Interface Compatibility with ADSL Interfaces

VDSL2 interfaces on SRX Series devices are backward compatible with most ADSL interface standards. The VDSL2 interface uses Ethernet in the First Mile (EFM) mode or Packet Transfer Mode (PTM) and uses the named interface pt-1/0/0. In ADSL fallback mode, VDSL2 operates on the ATM encapsulation interface in the first mile and uses the named interface at-1/0/0.

  • The VDSL2 interface has backward compatibility with ADSL/ADSL2/ADSL2+. The VDSL2 interface is represented by the pt interface when configured to function as VDSL2, and the ADSL interface is represented by the at interface when configured to function as ADSL.

  • On VDSL2 interfaces, by default the pt-1/0/0 interface is created when there is no configuration already created for either the pt-1/0/0 or the at-1/0/0 interface.

    Note

    It requires around 60 seconds to switch from VDSL2 to ADSL or from ADSL to VDSL2 operating modes.

Table 2 lists VDSL2 operating modes and their backward compatibility with ADSL interface standards.

Table 2: VDLS2 Operating Mode Backward Compatibility with ADSL

ADSL Annex Type

Operating Modes

Description

ADSL Annex A operating in POTS mode (ADSL modes for Annex A only)

auto

Configures the ADSL interface to autonegotiate settings with the DSLAM located at the central office. For Annex A, the ADSL interface uses either ANSI T1.413 Issue II mode or ITU G.992.1 mode.

Note: Automatic (auto) operating mode does not work when the DSLAM located at the central office is operating at ADSL2+ Annex M mode.

ansi-dmt

Configures the ADSL interface to use ANSI T1.413 Issue II mode.

itu-dmt

Configures the ADSL interface to use ITU G.992.1 mode.

itu-dmt-bis

Configures the ADSL interface to use ITU G.992.3 mode. You can configure this mode only when it is supported on the DSLAM.

adsl2plus

Configures the ADSL interface to use ITU G.992.5 mode. You can configure this mode only when it is supported on the DSLAM.

ADSL Annex B operating in ISDN mode (ADSL modes for Annex B only)

auto

Configures the ADSL interface to autonegotiate settings with the DSLAM located at the central office. For Annex B, the ADSL interface trains in ITU G.992.1 mode.

itu-dmt

Configures the ADSL interface to use ITU G.992.1 mode.

itu-dmt-bis

Configures the ADSL interface to use ITU G.992.3 mode. You can configure this mode only when it is supported on the DSLAM.

adsl2plus

Configures the ADSL interface to use ITU G.992.5 mode. You can configure this mode only when it is supported on the DSLAM.

itu-annexb-ur2

Configures the ADSL line to use G.992.1 Deutsche Telekom UR-2 mode.

Note

On SRX210, SRX220, and SRX240 devices, every time the VDSL2 Mini-PIM is restarted in the ADSL mode, the first packet passing through the Mini-PIM is dropped.

VDSL2 Interfaces Supported Profiles

A profile is a table that contains a list of preconfigured VDSL2 settings. Table 3 lists the different profiles supported on the VDSL2 interfaces and their properties.

Table 3: Supported Profiles on the VDSL2 Interfaces

Profiles

Data Rate

8a

50

8b

50

8c

50

8d

50

12a

68

12b

68

17a

100

Auto

Negotiated (based on operating mode)

VDSL2 Interfaces Supported Features

The following features are supported on the VDSL2 interfaces:

  • ADSL/ADSL2/ADSL2+ backward compatibility with Annex A, Annex M support

  • PTM or EFM (802.3ah) support

  • Operation, Administration, and Maintenance (OAM) support for ADSL/ADSL2/ADSL2+ mode

  • ATM quality of service (QoS) (supported only when the VDSL2 Mini-PIM is operating in ADSL2 mode)

  • Multilink Point-to-Point Protocol (MLPPP) (supported only when the VDSL2 Mini-PIM is operating in ADSL2 mode)

  • MTU size of 1514 bytes (maximum) in VDSL2 mode and 1496 bytes in ADSL mode.

  • Support for maximum of 10 permanent virtual connections (PVCs) (only in ADSL/ADSL2/ADSL2+ mode)

  • Dying gasp support (ADSL and VDSL2 mode)

Note

On SRX210 or SRX320 devices with VDLS2, ATM CoS VBR-related functionality cannot be tested.

Understanding IPv6 Support VDSL2 Interfaces

SRX300, SRX320, SRX340, SRX345, and SRX550HM devices support IPv6 on the following DSL encapsulations:

  • ATM physical interface encapsulations

    • atm-pvc

    • ethernet-over-atm

  • ATM logical interface encapsulations

    • atm-snap

    • atm-ppp-vc-mux

    • atm-nlpid

    • atm-cisco-nlpid

    • atm-ppp-llc

    • ether-over-atm-llc

Note

The encapsulation types atm-vc-mux and ppp-over-ether-over-atm-llc do not include IPv6 support.

To configure IPv6 addresses on DSL interfaces in ATM or PTM mode, include the family protocol type as inet6 at the [edit interfaces] hierarchy level.

Example: Configuring VDSL2 Interfaces (Basic)

This example shows how to configure the VDSL2 interfaces for SRX110, SRX210, SRX220, SRX240, SRX320, and SRX340 devices. (Platform support depends on the Junos OS release in your installation.)

Requirements

Before you begin:

Overview

In this example, you create a VDSL2 interface called pt-1/0/0 and set the VDSL2 profile to auto.

Configuration

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure the VDSL2 interfaces for the SRX110, SRX210, SRX240, SRX320, and SRX340 devices and enable VLAN tagging:

  1. Create an interface.
  2. Set the type of VDSL2 profile.
  3. Specify the logical unit to connect to this physical VDSL2 interface.
  4. Specify the family protocol type.
  5. To enable VLAN tagging on the pt interface.
  6. Specify the value of the VLAN ID to be configured.
    Note

    This feature is supported only on the pt interface, and the range of VLANs that can be configured is 0 to 4093.

Results

From configuration mode, confirm your configuration by entering the show interfaces pt-1/0/0 command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

Note

When VLAN tagging is configured, the intended output is:

If you are done configuring the device, enter commit from configuration mode.

Verifying the Configuration

Confirm that the configuration is working properly.

Displaying the Configuration for VDSL2 Interface (When Connected to the DSLAM Operating in Annex A Mode)

Purpose

Verify the command output.

Action

From operational mode, enter the show interfaces pt-1/0/0 command.

The output shows a summary of VDSL2 interface. Verify the following information:

  • Status of interface pt-1/0/0 is displayed as Physical link is Up.

  • Modem status is displayed as Showtime (Profile-17a).

  • Time in seconds during which the interface stayed up is displayed as Seconds in showtime.

  • Annex A indicates VDSL profile of the DSLAM connected at other end.

Displaying the Configuration for VDSL2 Interface (When Connected to the DSLAM Operating in Annex B Mode)

Purpose

Verify the command output.

Action

From operational mode, enter the show interfaces pt-1/0/0 command.

The output shows a summary of the VDSL2 interface. Verify the following information:

  • Status of interface pt-1/0/0 is displayed as Physical link is Up.

  • Modem status is displayed as Showtime (Profile-17a).

  • Time in seconds during which the interface stayed up is displayed as Seconds in showtime.

  • Annex B indicates the VDSL profile of the DSLAM connected at other end.

Example: Configuring VDSL2 Interfaces (Detail)

This example shows how to configure VDSL2 interfaces on SRX Series Services Gateways.

This example uses VDSL2 Mini-PIM installed on SRX210 and SRX320 devices. The information is also applicable to SRX110 (integrated VDSL2), SRX220, SRX240, and SRX320 devices (with VDSL2 Mini-PIMs). (Platform support depends on the Junos OS release in your installation.)

Requirements

Before you begin:

  • Install Junos OS Release 10.1 or later on the SRX Series devices.

  • Establish basic connectivity and set up and perform initial configuration. See the Quick Start Guide for your device for factory default settings.

  • Install the VDSL2 Mini-PIM on the SRX210 or SRX320 device chassis.

  • Connect the SRX210 or SRX320 device to a DSLAM.

  • On VDSL2 Mini-PIMs, by default the pt-1/0/0 interface is created when there is no configuration already created for either the pt-1/0/0 or the at-1/0/0 interface. You can switch to ADSL mode by just configuring at-1/0/0. If the configurations are already created for pt-1/0/0 or at-1/0/0, then you need to deactivate pt-1/0/0 before you create at-1/0/0 or deactivate at-1/0/0 to create pt-1/0/0.

  • Make sure that you have deleted the previous configurations on pt-1/0/0 and pp0.

Overview

This example uses SRX210 or SRX320 devices. The information is also applicable to SRX240 and SRX340 devices.

Figure 3 shows typical SRX Series devices with VDSL2 Mini-PIM network connections.

Figure 3: SRX Series Device with VDSL2 Mini-PIMs in an End-to-End Deployment Scenario
SRX Series Device
with VDSL2 Mini-PIMs in an End-to-End Deployment Scenario

In this example, you begin a new configuration on a VDSL2 Mini-PIM. You first deactivate previous interfaces and delete any old configuration from the device. Then you set the interfaces with the VDSL profile and the Layer 3 configuration for the end-to-end data path.

You then configure the PPPoE on the pt-1/0/0 interface with a static IP address or CHAP authentication. You configure PPPoE on the pt-1/0/0 interface with unnumbered IP address (PAP authentication or CHAP authentication).

Finally, you configure PPPoE on the pt-1/0/0 interface with negotiated IP address (PAP authentication or CHAP authentication).

Configuration

Beginning a New Configuration on a VDSL2 Mini-PIM

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To begin a new configuration on a VDSL2 Mini-PIM:

  1. Deactivate any previous interfaces.
  2. Delete any old configurations.
  3. If you are done configuring the device, commit the configuration.

Results

From configuration mode, confirm your configuration by entering the show chassis fpc command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring the VDSL2 Mini-PIM for End-to-End Data Path

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure the VDSL2 Mini-PIM for end-to-end data path:

  1. Configure the interfaces with the VDSL profile and the Layer 3 configuration for end-to-end data path.
  2. If you are done configuring the device, commit the configuration.

Results

From configuration mode, confirm your configuration by entering the show interfaces pt-1/0/0 command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-1/0/0 Interface with a Static IP Address

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Note

To configure VLAN tagging while configuring PPPoE on the pt-1/0/0 interface with

  • Static IP address

  • Static IP address (CHAP authentication)

  • Unnumbered IP address (PAP Authentication)

  • Unnumbered IP address (CHAP Authentication)

  • Negotiated IP address (PAP Authentication)

  • Negotiated IP address (CHAP Authentication)

the following commands must be included at [edit] hierarchy level:

Step-by-Step Procedure

To configure the PPPoE on the pt-1/0/0 interface with a static IP address:

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the PPP options for the interface.
  3. Configure the PPPoE options for the interface.
  4. Configure the IP address for the interface.
  5. Configure the access profile for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces pp0, show interfaces pt-1/0/0 and show access profile pap_prof commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-1/0/0 Interface with a Static IP Address (CHAP Authentication)

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure the PPPoE on the pt-1/0/0 interface with a static IP address (CHAP authentication):

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the PPP options for the interface.
  3. Configure the PPPoE options for the interface.
  4. Configure the IP address for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces pt-1/0/0 and show interfaces pp0 commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-x/x/x Interface with Unnumbered IP (PAP Authentication)

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE on the pt-1/0/0 interface with unnumbered IP (PAP authentication):

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the IP address for the interface.
  3. Configure the PPP options for the interface.
  4. Configure the PPPoE options for the interface.
  5. Configure the unnumbered address and destination for the interface.
  6. Configure the access profile for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces lo0, show interfaces pt-1/0/0, and show interfaces pp0 commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-1/0/0 Interface with Unnumbered IP (CHAP Authentication)

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE on the pt-1/0/0 interface with unnumbered IP (CHAP authentication):

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the IP address for the interface.
  3. Configure the PPP options for the interface.
  4. Configure the PPPoE options for the interface.
  5. Configure the unnumbered address and destination for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces pp0, show interfaces pt-1/0/0, and show interfaces lo0 commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-1/0/0 Interface with Negotiated IP (PAP Authentication)

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE on the pt-1/0/0 interface with negotiated IP (PAP authentication):

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the PPP options for the interface.
  3. Configure the PPPoE options for the interface.
  4. Configure the negotiated IP address for the interface.
  5. Configure the access profile for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces pt-1/0/0, show interfaces pp0, and show access profile my_prf commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE on the pt-1/0/0 Interface with Negotiated IP (CHAP Authentication)

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE on the pt-1/0/0 interface with negotiated IP (CHAP authentication):

  1. Configure the VDSL options and encapsulation for the interface.
  2. Configure the PPP options for the interface.
  3. Configure the PPPoE options for the interface.
  4. Configure the negotiated IP address for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces pp0 and show interfaces pt-1/0/0commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Verification

Confirm that the configuration is working properly.

Verifying the Configuration

Purpose

Verify the FPC status and the command output.

Action

  1. Verify the FPC status by entering the show chassis fpc command. The output should display FPC status as online.
    Note

    The VDSL2 Mini-PIM is installed in the first slot of the SRX320 device chassis; therefore, the FPC used here is fpc 1. For SRX340 devices, the FPC used will be fpc 1, fpc 2, fpc 3, or fpc 4.

  2. Enter run show interface pt-1/0/0 and verify the following information in the command output:
    • Status of interface pt-1/0/0 is displayed as physical link is up.

    • Modem status is displayed as Showtime (Profile-17a).

    • Time in seconds during which the interface stayed up is displayed as Seconds in Showtime.

    • VDSL profile of DSLAM is displayed as Auto Annex A.

Verifying the VDSL2 Mini-PIM for End-to-End Data Path

Purpose

Verify the interface status and check traffic statistics.

Action

  1. Verify interface status by using the show interface terse command and test end-to-end data path connectivity by sending the ping packets to the remote end IP address.
  2. Verify the VDSL2 interface configuration and check the traffic statistics.

Verifying PPPoE on the pt-1/0/0 Interface with a Static IP Address

Purpose

Verify the interface output and the end-to-end data path.

Action

  1. Verify the interface output.
  2. Verify the end-to-end data path on the interface.

Verifying PPPoE on the pt-1/0/0 Interface with a Static IP Address (CHAP Authentication)

Purpose

Verify the interface status and check the end-to-end data path connectivity.

Action

  1. Verify the interface status.
  2. Verify the interface and check the end-to-end data path connectivity.

Verifying PPPoE on the pt-1/0/0 Interface with Unnumbered IP (PAP Authentication)

Purpose

Verify the interface status and the end-to-end data path testing.

Action

  1. Verify the interface status.
  2. Verify the end-to-end data path testing.

Verifying PPPoE on the pt-1/0/0 Interface with Unnumbered IP (CHAP Authentication)

Purpose

Verify the interface status and end-to-end data path testing on the PPPoE interface.

Action

  1. Verify the interface status.
  2. Verify the end-to-end data path testing on the PPPoE interface.

Verifying PPPoE on the pt-1/0/0 Interface with Negotiated IP (PAP Authentication)

Purpose

Verify the PPPoE interface status and the end-to-end data path connectivity.

Action

  1. Verify the PPPoE interface status.
  2. Verify the end-to-end data path connectivity.

Verifying PPPoE on the pt-1/0/0 Interface with Negotiated IP (CHAP Authentication)

Purpose

Verify the interface status and the end-to-end data path connectivity.

Action

  1. Verifying the interface status.
  2. Verify the end-to-end data path connectivity.

Example: Configuring VDSL2 Interfaces in ADSL Mode (Basic)

This example shows how to configure the integrated VDSL2 interfaces for SRX320 (Annex B) in ADSL backward compatible mode.

Requirements

Before you begin:

  • Set up and perform initial configuration on the SRX Series devices.

  • Connect the SRX320 device to a DSLAM

  • Establish basic connectivity. See the Quick Start Guide for your device for factory default settings.

  • On VDSL2 interfaces, by default the pt-1/0/0 interface is created when there is no configuration already created for either the pt-1/0/0 or the at-1/0/0 interface. You can switch to ADSL mode by just configuring at-1/0/0. If the configurations are already created for pt-1/0/0 or at-1/0/0, then you need to deactivate pt-1/0/0 before you create at-1/0/0 or deactivate at-1/0/0 to create pt-1/0/0.

  • Make sure that you have deleted the previous configurations on pt-1/0/0 and pp0.

Overview

In this example, you create a VDSL2 interface called pt-1/0/0, specify the type of encapsulation, and set the VDSL2 profile to auto.

Configuration

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure the VDSL2 interfaces for the SRX320 in ADSL backward compatible mode:

  1. Set operating mode.
  2. Configure the ATM VPI option
  3. Set the ATM VCI option.
  4. Configure the IP address for the interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Verifying the Configuration

Confirm that the configuration is working properly.

Verifying the Configuration

Purpose

Verify the command output.

Action

From operational mode, enter the show interfaces at-1/0/0 extensive command.

The output shows a summary of VDSL2 interface. Verify the following information:

  • Status of interface at-1/0/0 is displayed as Physical link is Up.

  • Modem status is displayed as Showtime (Adsl2plus).

  • Time in seconds during which the interface stayed up is displayed as Seconds in showtime.

  • ADSL profile of the DSLAM is displayed as Annex B.

Example: Configuring VDSL2 Interfaces in ADSL Mode (Detail)

This example shows how to configure ADSL Interfaces for SRX Series devices.

This example uses VDSL2 Mini-PIM installed on SRX320 devices. The information is also applicable to SRX340 devices (with VDSL2 Mini-PIMs).

Requirements

Before you begin:

  • Install Junos OS Release 10.1 or later for the SRX Series devices.

  • Set up and perform initial configuration on the SRX Series device. See Quick Start Guide of your device for factory default settings.

  • Install the VDSL2 Mini-PIM on the SRX320 device chassis.

  • Ensure that the SRX320 device is connected to a DSLAM that supports VDSL2-to-ADSL fallback.

Overview

In this example, you configure the ADSL interface for end-to-end data path. Then you configure PPPoA on the at-1/0/0 interface with a negotiated IP address and either PAP authentication or CHAP authentication. You also configure a static IP address and an unnumbered IP address (and either PAP authentication or CHAP authentication) for PPPoA on the at-1/0/0 interface.

Finally, you configure PPPoE on the at-1/0/0 interface with a negotiated IP address and either PAP authentication or CHAP authentication.

Configuration

Configuring the ADSL Interface for End-to-End Data Path

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure the ADSL interface for end-to-end data path:

  1. Delete any previous configurations.
  2. Specify the basic configuration for the ADSL interface.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Negotiated IP and PAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with negotiated IP and PAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Configure the negotiated IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Negotiated IP and CHAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with negotiated IP and CHAP Authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Configure the negotiated IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Static IP and PAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with static IP and PAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Configure the negotiated IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Static IP and CHAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with static IP and CHAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Configure the negotiated IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Unnumbered IP and PAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with unnumbered IP and PAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Configure the IP address, unnumbered IP address, and destination IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0, show interfaces lo0, and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoA on the at-1/0/0 Interface with Unnumbered IP and CHAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoA on the at-1/0/0 interface with unnumbered IP and CHAP authentication:

  1. Configure encapsulation and ATM-options.
  2. Specify the PPP-options.
  3. Configure the IP address, unnumbered IP address, and destination IP address.
  4. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0, show interfaces lo0, and show access profile jnpr commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE over ATM on the at-1/0/0 Interface with Negotiated IP and PAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE over ATM on the at-1/0/0 interface with negotiated IP and PAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Specify PPPoE options.
  4. Configure the negotiated IP address.
  5. Configure the access profile.

Results

From configuration mode, confirm your configuration by entering the set access profile my_prf, show access profile my_prf, and show interfaces pp0 commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Configuring PPPoE over ATM on the at-1/0/0 Interface with Negotiated IP and CHAP Authentication

CLI Quick Configuration

To quickly configure this example, copy the following command, paste it into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the command into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode.

Step-by-Step Procedure

To configure PPPoE over ATM on the at-1/0/0 interface with negotiated IP and CHAP authentication:

  1. Configure encapsulation and ATM options.
  2. Specify PPP options.
  3. Specify PPPoE options.
  4. Configure the negotiated IP address.

Results

From configuration mode, confirm your configuration by entering the show interfaces at-1/0/0 and show interfaces pp0 commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Verification

Confirm that the configuration is working properly.

Verifying the ADSL Interface for End-to-End Data Path

Purpose

Verify the interface status and traffic statistics.

Action

From operational mode, enter the show interface at-1/0/0 terse and show interfaces at-1/0/0 commands.

user@host> show interfaces at-1/0/0 terse
user@host> show interfaces at-1/0/0

Verifying PPPoA on the at-1/0/0 Interface with Negotiated IP and PAP Authentication

Purpose

Verify the interface status and end-to-end data path connectivity.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoA on the at-1/0/0 Interface with Negotiated IP and CHAP Authentication

Purpose

Verify the interface output and end-to-end data path connectivity.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoA on the at-1/0/0 Interface with Static IP and PAP Authentication

Purpose

Verify the interface status and end-to-end data path testing.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoA on the at-1/0/0 Interface with Static IP and CHAP Authentication

Purpose

Verify the interface status and end-to-end data path testing.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoA on the at-1/0/0 Interface with Unnumbered IP and PAP Authentication

Purpose

Verify the interface status and end-to-end data path testing.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoA on the at-1/0/0 Interface with Unnumbered IP and CHAP Authentication

Purpose

Verify the interface status and end-to-end data path connectivity.

Action

From operational mode, enter the show interfaces at-1/0/0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces at-1/0/0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoE over ATM on the at-1/0/0 Interface with Negotiated IP and PAP Authentication

Purpose

Verify the interface status and end-to-end data path connectivity

Action

From operational mode, enter the show interfaces pp0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces pp0
user@host> show interfaces at-1/0/0 terse

Verifying PPPoE over ATM on the at-1/0/0 Interface with Negotiated IP and CHAP Authentication

Purpose

Verify the interface status and end-to-end data path connectivity

Action

From operational mode, enter the show interfaces pp0 and show interfaces at-1/0/0 terse commands.

user@host> show interfaces pp0
user@host> show interfaces at-1/0/0 terse

Upgrading the VDSL PIC Firmware

Starting in Junos OS Release 15.51x49-D50, you can upgrade the VDSL PIC firmware on SRX320, SRX340, and SRX345 devices. This topic shows how to perform the upgrade.

Before you begin:

Check the current firmware version of the VDSL PIC.

user@host> show system firmware

This section describes the step-by-step procedure to upgrade VDSL PIC firmware.

  1. Mount or copy the firmware package to the SRX Series device.

    If the file has been obtained from JTAC, use FTP or SCP to load the firmware file on the device. Save the file in the /var/tmp directory.

  2. Upgrade the firmware on the SRX Series device.

    To install the firmware package on the device and make it available for upgrading, use the following command:

    user@host> request system software add no-copy no-validate jfirmware-srxsme-11.4R2.7-signed.tgz

  3. To check if the firmware package is available on the SRX Series device, use the following command:

    user@host> show version

    Hostname: user

    Model: srx210h

    JUNOS Software Release [12.1I20120123_0941]

    JUNOS Firmware Software Suite [11.4R2.7]

  4. To verify the VDSL PIM slot, use the following command:

    user@host> show chassis hardware

  5. To initiate a firmware upgrade, use the following command:

    user@host> request system firmware upgrade pic fpc-slot <no.> pic-slot 0 tag 10

  6. To check the status of the upgraded firmware, use the following command:

    show system firmware

    user@host> show system firmware
  7. To enable the upgraded firmware, restart the FPC slot in which the VDSL PIM is installed.

    user@host> restart fpc <no.>

    FPC 1 restarted

  8. To verify the firmware upgrade is complete, use the following command:

    show system firmware

    user@host> show system firmware
Release History Table
Release
Description
Starting in Junos OS Release 15.1X49-D50, VDSL2 vectoring is supported.
Starting in Junos OS Release 15.51x49-D50, you can upgrade the VDSL PIC firmware on SRX320, SRX340, and SRX345 devices.