Example: Configuring a Profile for Dynamic Interfaces

Requirements

• JunosE Release 7.1.0 or higher-numbered releases
• E Series router (ERX7xx models, ERX14xx models, the ERX310 router, the E120 router, or the E320 router)
• ASIC-based line modules that support Fast Ethernet or Gigabit Ethernet

Overview

Currently, profiles support bridged Ethernet, IP, IPv6, L2TP, Multilink PPP, PPP, PPPoE, and VLANs. You create a profile with a specific set of characteristics. You then assign the profile to multiple interfaces instead of creating separate interfaces with identical attributes. After you create a profile, you can assign it to static ATM 1483, static PPP, or static VLAN major interfaces on different devices.

Configuring and Assigning Profiles

This example explains various ways to assign the created profiles to multiple interfaces.

• Creating Profiles
• Assigning Distinct Profiles for Each Encapsulation
• Assigning a Single Profile for All Encapsulations
• Assigning a Profile Using any Wildcard
• Assigning a Profile for bridgedEthernet Encapsulation

Creating Profiles

Step-by-Step Procedure

1. Create a new profile with IP characteristics only.
   host1(config)#profile ProfileA host1(config-profile)#ip mtu 1024 host1(config-profile)#exit
2. Create a new profile with both IP and PPP characteristics.
   host1(config)#profile ProfileB host1(config-profile)#ip mtu 512 host1(config-profile)#ppp authentication chap host1(config-profile)#ppp keepalive 120 host1(config-profile)#exit
3. Create a new profile with IP, PPP, and PPPoE characteristics.
   host1(config)#profile ProfileC host1(config-profile)#ip mtu 1400 host1(config-profile)#ppp authentication chap host1(config-profile)#ppp keepalive 60 host1(config-profile)#pppoe sessions 64 host1(config-profile)#exit

Assigning Distinct Profiles for Each Encapsulation

Step-by-Step Procedure

1. Assign the created profiles for each encapsulation.
   host1(config)#interface atm 4/0.1host1(config-subif)#atm pvc 10 10 22 aal5autoconfig host1(config-subif)#profile ip ProfileAhost1(config-subif)#profile ppp ProfileBhost1(config-subif)#profile pppoe ProfileChost1(config-subif)#subscriber ip user atm1 domain isp1 password atm1pw
2. Enable autodetection for the encapsulation types with the default lockout time range.
   host1(config-subif)#auto-configure iphost1(config-subif)#auto-configure ppphost1(config-subif)#auto-configure pppoehost1(config-subif)#exit

Assigning a Single Profile for All Encapsulations

Step-by-Step Procedure

1. Assign the same profile for all encapsulations.
   host1(config)#interface atm 4/0.2host1(config-subif)#atm pvc 200 0 200 aal5autoconfig host1(config-subif)#profile any ProfileChost1(config-subif)#subscriber ip user atm2 domain isp2 password atm2pw
2. Enable autodetection for the encapsulation types with the default lockout time range.
   host1(config-subif)#auto-configure iphost1(config-subif)#auto-configure ppphost1(config-subif)#auto-configure pppoehost1(config-subif)#exit

Assigning a Profile Using any Wildcard

Step-by-Step Procedure

1. Assign the profile using the any keyword.
   host1(config)#interface atm 4/0.3host1(config-subif)#atm pvc 300 0 300 aal5autoconfig host1(config-subif)#profile any ProfileChost1(config-subif)#subscriber ip user atm2 domain isp3 password atm3pw
2. Enable autodetection for the IP encapsulation type with a lockout time range of 3600–7200 seconds (1–2 hours).
   host1(config-subif)#auto-configure ip lockout-time 3600 7200
3. Enable autodetection for other encapsulation types with the default lockout time range.
   host1(config-subif)#auto-configure ppphost1(config-subif)#auto-configure pppoehost1(config-subif)#exit

Assigning a Profile for bridgedEthernet Encapsulation

Step-by-Step Procedure

1. Assign the profile for the bridgedEthernet encapsulation.
   host1(config)#interface atm 4/0.3host1(config-subif)#atm pvc 300 0 300 aal5autoconfig host1(config-subif)#profile bridgedEthernet ProfileAhost1(config-subif)#subscriber bridgedEthernet user atm3 domain isp1 password fjdkei
2. Enable autodetection for the bridged Ethernet encapsulation type with a lockout time range of 3600–21600 seconds (1–6 hours).
   host1(config-subif)#auto-configure bridgedEthernet lockout-time 3600 21600