Check the Configuration of Promiscuous Mode on an ATM2 IQ Interface

Purpose

If your configuration of promiscuous mode is incorrect, the logical interface is not created. ATM2 IQ interfaces must have the pic-type atm2 statement included if you are including the promiscuous-mode statement in the configuration.

Action

To check that promiscuous mode is configured correctly on your ATM2 IQ interface, follow these steps:

1. Check the configuration with the following JUNOS CLI operational mode command:

user@host> show configuration interfaces at-fpc/pic/port

For example, the following output shows promiscuous mode incorrectly configured on an ATM2 IQ interface:

user@host> show configuration interfaces at-1/2/0

encapsulation atm-ccc-cell-relay;

atm-options {

    promiscuous-mode {     <<< the pic-type statement is missing

        vpi 1;

    }

}

unit 1 {

    vpi 1;

}

2. Check if the logical interface unit 1 is created with the following command:

user@host> run show interfaces terse at-fpc/pic/port

For example, the following output shows that the link is not created:

user@host# run show interfaces terse at-0/1/0 

Interface               Admin Link Proto Local                 Remote

at-0/1/0                up    up  

<<< missing logical interface at-0/1/0.1

3. Include the pic-type statement in the configuration:

user@host> edit

user@host# set interfaces interface-name atm-options pic-type atm2

user@host# show

user@host# commit

For example, the following output shows promiscuous mode correctly configured on an ATM2 IQ interface:

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

encapsulation atm-ccc-cell-relay;

atm-options {

    pic-type atm2;

    promiscuous-mode {

        vpi 1;

    }

}

unit 1 {

    vpi 1;

}

4. Check that the logical interface is created with the following command:

user@host> run show interfaces terse at-fpc/pic/port

For example, the following output shows that the link is created:

user@host# run show interfaces terse at-0/1/0

Interface               Admin Link Proto Local                 Remote

at-0/1/0                up    up  

at-0/1/0.1              up    up   ccc

What It Means

The steps above show that initially the logical interface at-0/1/0.1 is not created because the pic-type statement is not included with the promiscuous-mode statement in the ATM2 IQ configuration. When that statement is included, the logical interface is created.