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Verifying a PPPoE Configuration

To verify PPPoE configuration perform the following tasks:

Displaying a PPPoE Configuration for an ATM-for-ADSL Interface

Purpose

Verify the PPPoE configuration for an ATM-for-ADSL interface.

Action

From the J-Web interface, select Configuration>View and Edit>View Configuration Text. Alternatively, from configuration mode in the CLI, enter the show interfaces command from the top level.

Sample Output




[edit]

user@host# show interfaces



at-2/0/0 {

encapsulation ethernet-over-atm;




atm-options {

vpi 0;

}







dsl-options {

operating-mode auto;

}







unit 0 {

encapsulation ppp-over-ether-over-atm-llc;

vci 0.120;

}




}



pp0 {

mtu 1492;




unit 0 {




ppp-options {




chap {

access-profile A-ppp-client;

local-name A-at-2/0/0.0;

}




}







pppoe-options {

underlying-interface at-2/0/0;

access-concentrator ispl.com;

service-name "video@ispl.com";

auto-reconnect 100;

}




no-keepalives;




family inet {

negotiate-address;

}




}




}

What it Means

Verify that the output shows the intended configuration of PPPoE. For more information about the format of a configuration file, see Viewing the Configuration Text.

Verifying PPPoE Interfaces

Purpose

Verify that the PPPoE router interfaces are configured properly.

Action

From the CLI, enter the show interfaces pp0 command.

Sample Output

user@host> show interfaces pp0

Physical interface: pp0, Enabled, Physical link is Up
  Interface index: 67, SNMP ifIndex: 317
  Type: PPPoE, Link-level type: PPPoE, MTU: 9192, Clocking: 1
  Device flags   : Present Running
  Interface flags: Point-To-Point SNMP-Traps
  Link type      : Full-Duplex
  Link flags     : None
  Last flapped   : Never
  Input rate     : 0 bps (0 pps)
  Output rate    : 0 bps (0 pps)

  Logical interface pp0.0 (Index 1) (SNMP ifIndex 330)
    Flags: Point-To-Point SNMP-Traps 16384 Encapsulation: PPPoE
    PPPoE:
      State: SessionUp, Session ID: 3304,
      Session AC name: isp1.com, AC MAC address: 00:90:1a:40:f6:4c,
      Service name: video@isp1.com, Configured AC name: isp1.com,
      Auto-reconnect timeout: 60 seconds
      Underlying interface: fe-5/0/0.0 (Index 71)
  Input packets : 23
  Output packets: 22
  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
  Keepalive: Input: 16 (00:00:26 ago), Output: 0 (never)
  LCP state: Opened
  NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
  Not-configured
  CHAP state: Success
    Protocol inet, MTU: 1492
      Flags: Negotiate-Address
      Addresses, Flags: Kernel Is-Preferred Is-Primary
        Destination: 211.211.211.2, Local: 211.211.211.1

What it Means

The output shows information about the physical and the logical interface. Verify the following information:

The physical interface is enabled and the link is up.
The PPPoE session is running on the correct logical interface.
Under State, the state is active (up).
Under Underlying interface, the physical interface on which the PPPoE session is running is correct:
- For an Ethernet connection, the underlying interface is Fast Ethernet—for example, fe-5/0/0.0.
- For an ATM-for-ADSL connection, the underlying interface is ATM—for example, at-2/0/0.0.

For more information about the show interfaces pp0 command, see the JUNOS Network and Services Interfaces Command Reference.

Verifying PPPoE Sessions

Purpose

Verify that a PPPoE session is running properly on the logical interface.

Action

From the CLI, enter the show pppoe interfaces command.

Sample Output

user@host> show pppoe interfaces

pp0.0 Index 67
  State: Session up, Session ID: 31,
  Service name: video@isp1.com, Configured AC name: isp1.com,
  Session AC name: belur, AC MAC address: 00:90:1a:40:f6:4e,
  Auto-reconnect timeout: 1 seconds,
  Underlying interface: fe-0/0/1.0 Index 69

What it Means

The output shows information about the PPPoE sessions. Verify the following information:

The PPPoE session is running on the correct logical interface.
Under State, the session is active (up).
Under Underlying interface, the physical interface on which the PPPoE session is running is correct:
- For an Ethernet connection, the underlying interface is Fast Ethernet—for example, fe-0/0/1.0.
- For an ATM-for-ADSL connection, the underlying interface is ATM—for example, at-2/0/0.0.

For more information about the show pppoe interfaces command, see the JUNOS Network and Services Interfaces Command Reference.

Verifying the PPPoE Version

Purpose

Verify the version information of the PPPoE protocol configured on the Services Router interfaces.

Action

From the CLI, enter the show pppoe version command.

Sample Output

user@host> show pppoe version

Point-to-Point Protocol Over Ethernet, version 1. rfc2516
   PPPoE protocol               = Enabled
   Maximum Sessions             = 256
   PADI resend timeout          = 2 seconds
   PADR resend timeout          = 16 seconds
   Max resend timeout           = 64 seconds
   Max Configured AC timeout    = 4 seconds

What it Means

The output shows PPPoE protocol information. Verify the following information:

The correct version of the PPPoE protocol is configured on the interface.
Under PPPoE protocol, the PPPoE protocol is enabled.

For more information about the show pppoe version command, see the JUNOS Network and Services Interfaces Command Reference.

Verifying PPPoE Statistics

Purpose

Display statistics information about PPPoE interfaces.

Action

From the CLI, enter the show pppoe statistics command.

Sample Output

user@host> show pppoe statistics

Active PPPoE sessions: 4
  PacketType                       Sent         Received
    PADI                            502                0
    PADO                              0              219
    PADR                            219                0
    PADS                              0              219
    PADT                              0              161
    Service name error                0                0
    AC system error                   0               13
    Generic error                     0                0
    Malformed packets                 0               41
    Unknown packets                   0                0
  Timeout
    PADI                             42
    PADO                              0
    PADR                              0

What it Means

The output shows information about active sessions on PPPoE interfaces. Verify the following information:

Total number of active PPPoE sessions running on the interface.
Under Packet Type, the number of packets of each type sent and received during the PPPoE session.

For more information about the show pppoe statistics command, see the JUNOS Network and Services Interfaces Command Reference.

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