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Example: Configuring a Dynamic Interface Set of VLAN Subscribers

Requirements

This example uses the following software and hardware components:

• Junos OS Release 10.4

• MX Series Router with MPCs

Overview

In this example, the network administrator groups dynamic VLAN interfaces in an interface set. The interface set is configured in a dynamic profile, and enables hierarchical scheduling for the VLAN interfaces for a multiplay service.

DHCP is used as the access method, and RADIUS is used as the authentication method for the interfaces associated with the interface set.

Configuring the Dynamic VLANs

CLI Quick Configuration

To quickly configure the dynamic VLANs, copy the following commands and paste them into the router terminal window:

Configuring the Dynamic Profile for the Autoconfigured VLANs

Step-by-Step Procedure

1. Configure the dynamic profile.
   [edit]user@host#edit dynamic-profile vlan-prof
2. Configure the interfaces.
   [edit dynamic-profiles vlan-prof]user@host#edit interfaces $junos-interface-ifd-name unit $junos-interface-unit
3. Add the VLAN ID variable.
   [edit dynamic-profiles vlan-prof interfaces $junos-interface-ifd-name unit $junos-interface-unit]user@host#set vlan-id $junos-vlan-id
4. Configure the demux source as IPv4.
   [edit dynamic-profiles vlan-prof interfaces $junos-interface-ifd-name unit $junos-interface-unit]user@host#set demux-source inet
5. Configure the family.
   [edit dynamic-profiles vlan-prof interfaces $junos-interface-ifd-name unit $junos-interface-unit]user@host#set family inet unnumbered-address lo0.0 preferred-source-address 100.20.32.2

Configuring the VLAN Interfaces

Step-by-Step Procedure

1. Create the VLAN interface.
   [edit]user@host# edit interfaces ge-1/0/0
2. Enable hierarchical scheduling.
   [edit interfaces ge-1/0/0]user@host# set hierarchical-scheduler
3. Configure VLAN tagging.
   [edit interfaces ge-1/0/0]user@host# set vlan-tagging
4. Configure auto-configuration for the dynamic profile.
   [edit interfaces ge-1/0/0]user@host# edit auto-configure vlan-ranges dynamic-profile vlan-prof
5. Configure any VLAN ID range.
   [edit interfaces ge-1/0/0 auto-configure vlan-ranges dynamic-profile vlan-prof]user@host# set ranges any
6. Specify IPv4 traffic for the VLAN.
   [edit interfaces ge-1/0/0 auto-configure vlan-ranges dynamic-profile vlan-prof]user@host# set accept inet

Configuring the Loopback Interface

Step-by-Step Procedure

1. Create the loopback interface.
   [edit]user@host# edit interfaces lo0
2. Configure the unit and the family.
   [edit intefaces lo0]user@host# set unit 0 family inet address 100.20.32.2/32

Configuring Dynamic Traffic Scheduling and Shaping

CLI Quick Configuration

To quickly configure the traffic scheduling and shaping parameters, copy the following commands and paste them into the router terminal window:

Configuring the Schedulers in the Dynamic Profile

Step-by-Step Procedure

1. Create the multiplay dynamic profile.
   [edit]user@host# edit dynamic-profiles multiplay class-of-service schedulers
2. Configure the best effort scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit be_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
3. Configure the expedited forwarding scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit ef_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
4. Configure the assured forwarding scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit af_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
5. Configure the network control scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit nc_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
6. Configure the voice scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit voice_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
7. Configure the video scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit video_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
8. Configure the gaming scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit game_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low
9. Configure the data scheduler.
   [edit dynamic-profiles multiplay class-of-service schedulers]user@host# edit data_schuser@host# set transmit-rate percent 12user@host# set buffer-size percent 12user@host# set priority low

Configuring the Scheduler Map in the Dynamic Profile

Step-by-Step Procedure

1. Configure the scheduler map for all of the services.
   [edit dynamic-profiles multiplay class-of-service]user@host# edit scheduler-maps all_smap
2. Configure the forwarding classes for each service in the scheduler map.
   [edit dynamic-profiles multiplay class-of-service scheduler-maps all_smap]user@host# set forwarding-class be scheduler be_schuser@host# set forwarding-class ef scheduler ef_schuser@host# set forwarding-class af scheduler af_schuser@host# set forwarding-class nc scheduler nc_schuser@host# set forwarding-class voice scheduler voice_schuser@host# set forwarding-class video scheduler video_schuser@host# set forwarding-class game scheduler game_schuser@host# set forwarding-class data scheduler data_sch

Configuring the Traffic-Control Profile in the Dynamic Profile

Step-by-Step Procedure

1. Configure the traffic-control profile.
   [edit dynamic-profiles multiplay class-of-service]user@host# edit traffic control-profiles multiplay
2. Configure the scheduler map.
   [edit dynamic-profiles multiplay class-of-service traffic control-profiles multiplay]user@host# set scheduler-map all_smap
3. Configure the shaping rate.
   [edit dynamic-profiles multiplay class-of-service traffic control-profiles multiplay]user@host# set shaping-rate 100m
4. Configure the guaranteed rate.
   [edit dynamic-profiles multiplay class-of-service traffic control-profiles multiplay]user@host# set guaranteed-rate 20m

Configuring the Interface Set in the Dynamic Profile

CLI Quick Configuration

To quickly configure the interface set, copy the following commands and paste them into the router terminal window:

Configuring the Interfaces for the Interface Set

Step-by-Step Procedure

1. Configure the dynamic profile for the interface set.
   [edit]user@host#edit dynamic-profiles multiplay
2. Configure the interface using the Junos OS predefined variable.
   [edit dynamic-profiles multiplay]user@host#edit interfaces $junos-interface-ifd-name unit $junos-underlying-interface-unit
3. Configure the family.
   [edit dynamic-profiles multiplay interfaces $junos-interface-set-name unit $junos-underlying-interface-unit]user@host#set family inet unnumbered-address lo0.0 preferred-source-address 100.20.32.2

Configuring the Interface Set

Step-by-Step Procedure

1. Configure the interface set using the Junos OS predefined variable.
   [edit dynamic-profiles multiplay]user@host#edit interfaces interface-set $junos-interface-set-name
2. Add the dynamic VLAN interfaces to the interface set.
   [edit dynamic-profiles multiplay interfaces $junos-interface-set-name]user@host#set interface $junos-interface-ifd-name unit $junos-underlying-interface-unit

Applying the Traffic Control Profile to the Interface Set

Step-by-Step Procedure

1. Specify the interface set to which you want to apply the traffic control profile.
   [edit class-of-service]user@host#edit interfaces interface-set dynamic-set
2. Attach the output-traffic control profile defined in the dynamic profile to the interface set.
   [edit class-of-service interfaces]user@host#set output-traffic-control-profile multiplay

Configuring DHCP Access

CLI Quick Configuration

To quickly configure DHCP access, copy the following commands and paste them into the router terminal window:

Configuring the DHCP Local Server

Step-by-Step Procedure

1. Configure the DHCP local server.
   [edit system]user@host# edit services dhcp-local-server authentication
2. Set the password.
   [edit system services dhcp-local-server authentication]user@host# set password multiplay
3. Specify that you want to include optional information in the username.
   [edit system services dhcp-local-server authentication]user@host# set username-include user-prefix multiplay
4. Attach the dynamic profile with the interface set.
   [edit system services dhcp-local-server]user@host# set dynamic-profile dhcp-vlan-prof aggregate-clients replace
5. Configure a group for the VLAN interface.
   [edit system services dhcp-local-server]user@host# set group vlans interface ge-1/0/0

Configuring Address Assignment Pools

Step-by-Step Procedure

1. Configure the pool of IPv4 addresses.
   [edit access]user@host#edit address-assignment pool v4 family inet
2. Configure the family of interfaces in the pool.
   [edit access address-assignment pool v4]user@host#set network 100.20.0.0/16
3. Configure the upper and lower bounds of the address range.
   [edit access address-assignment pool v4]user@host#set range limited low 100.20.0.10user@host#set range limited high 100.20.128.250
4. Configure the maximum length of time in seconds for which a subscriber can request and hold a lease.
   [edit access address-assignment pool v4]user@host#set dhcp-attributes maximum-lease-time 84600

Configuring RADIUS Authentication

CLI Quick Configuration

To quickly configure RADIUS authentication, copy the following commands and paste them into the router terminal window:

Configuring RADIUS Access

Step-by-Step Procedure

1. Configure the RADIUS server.
   [edit access]user@host#edit radius-server 172.28.30.108
2. Configure the required secret (password) that the local router or switch passes to the RADIUS client.
   [edit access radius-server 172.28.30.108]user@host# set secret $9$1u5ErvW87bwgSr4Zji5T
3. Configure the length of time that the local router or switch waits to receive a response from a RADIUS server.
   [edit access radius-server 172.28.30.108]user@host# set timeout 5
4. Configure the number of times that the router or switch attempts to contact a RADIUS accounting server.
   [edit access radius-server 172.28.30.108]user@host# set retry 5
5. Configure the access profile.
   [edit access]user@host#edit profile acc-prof
6. Configure the authentication order.
   [edit access profile acc-prof ]user@host# set authentication-order radius
7. Configure the authentication server.
   [edit access profile acc-prof]user@host#set radius authentication-server 172.28.30.108

Results

Verification

To confirm that the configuration is correct, perform these tasks:

• Verifying the Interfaces that are Included in the Interface Set
• Verifying the Traffic Scheduling and Shaping Parameters for the Interface Set

Verifying the Interfaces that are Included in the Interface Set

Purpose

Verify the interfaces included in the interface set.

Action

Verifying the Traffic Scheduling and Shaping Parameters for the Interface Set

Purpose

Verify that the traffic scheduling and shaping parameters are applied properly to an interface included in the interface set.

Action