Configuration Tasks for CoS cCPE Services (CLI)

Configuration Tasks for CoS cCPE

Services (CLI)

• Configuring CoS BA Classifiers and Rewrite Rules to Manage Traffic When Running cCPE Services on page 55

• Configuring CoS to Manage VoIP Traffic When Running cCPE Services on page 56

Configuring CoS BA Classifiers and Rewrite Rules to Manage Traffic When Running

cCPE Services

This topic describes how to configure the behavior aggregate (BA) classifier and rewrite rules to manage traffic when you use cCPE services.

Before you begin, make sure you have completed the steps for the cCPE common configuration. See“Configuring the cCPE Common Configuration on MX Series Routers Using the Junos OS CLI” on page 33.

To configure the BA classifier and rewrite rules:

1. Configure the IEEE 802.1 default classifier to handle incoming packets. [edit]

user@host# edit class-of-service interfaces interface-name unit vlan-unit-id classifiers ieee-802.1

For example: [edit]

user@host# edit class-of-service interfaces ge-1/0/1 unit 3 classifiers ieee-802.1 default

user@host# set default

2. Configure rewrite rules to map traffic to code points when the traffic exits the system, and apply the rewrite rules to a specific interface.

[edit class-of-service interfaces ge-1/0/1 unit 105 classifiers ieee-802.1] user@host# up

user@host# up

user@host# edit rewrite-rules ieee-802.1 user@host# set default

user@host> show class-of-service interface ge-1/01 Physical interface: ge-1/0/1, Index: 192

Queues supported: 8, Queues in use: 6 Scheduler map: <default>, Index: 2 Congestion-notification: Disabled

Logical interface: ge-1/0/1.0, Index: 65543

Object Name Type Index

Classifier ipprec-compatibility ip 13

user@host> show class-of-service classifier name ieee8021p-default Classifier: ieee8021p-default, Code point type: ieee-802.1, Index: 11 Code point Forwarding class Loss priority 000 best-effort low 001 best-effort high 010 expedited-forwarding low 011 expedited-forwarding high 100 assured-forwarding low 101 assured-forwarding high 110 network-control low 111 network-control high Related Documentation

CoS and cCPE Services Overview on page 15 •

• Verifying CoS cCPE Services on page 139 • CoS Overview

• Assigning CoS Components to Interfaces

• Understanding Applying CoS Classifiers and Rewrite Rules to Interfaces

• Defining CoS Rewrite Rules

• Understanding CoS Rewrite Rules

Configuring CoS to Manage VoIP Traffic When Running cCPE Services

This procedure configures the CoS multifield classifier to classify incoming voice over IP (VoIP) traffic to the corresponding CoS forwarding class. A firewall filter classifies incoming Session Initiation Protocol (SIP) and Real-Time Transport Protocol (RTP) VoIP traffic.

Before you begin, make sure you have completed the steps for the cCPE common configuration. See“Configuring the cCPE Common Configuration on MX Series Routers Using the Junos OS CLI” on page 33.

Complete the following tasks to configure the multifield classifier: 1. Configuring a Firewall Filter to Classify SIP VoIP Traffic on page 57

2. Configuring a Firewall Filter to Classify RTP Traffic for CoS cCPE Services on page 57 3. Applying the SIP and RTP Firewall Filters for CoS cCPE Services on page 58

Configuring a Firewall Filter to Classify SIP VoIP Traffic

To configure an IPv4 firewall filter to classify session initiation protocol (SIP) VoIP traffic to a named forwarding class:

1. Configure an IPv4 firewall filter that checks for packets from the UDP protocol. [edit]

user@host# edit firewall family inet filter voip-filter term sip from user@host# set protocol udp

2. Configure the same IPv4 firewall filter to check for packets from the TCP protocol. [edit firewall family inet filter voip-filter term sip from]

user@host# set from protocol tcp

3. Specify which port is used for UDP and TCP traffic. [edit firewall family inet filter voip-filter term sip from] user@host# set port 5060

4. Classify the UDP and TCP packets to the named forwarding class. [edit firewall family inet filter voip-filter term sip from]

user@host# up

[edit firewall family inet filter voip-filter term sip] user@host# set then forwarding-class cos-voice

5. Specify that packets matching the filter conditions are accepted. [edit firewall family inet filter voip-filter term sip]

user@host# set then accept 6. Verify the configuration.

user@host# show from { protocol [ udp tcp ]; port 5060; } then { forwarding-class cos-voice; accept; }

Configuring a Firewall Filter to Classify RTP Traffic for CoS cCPE Services

This procedure configures an IPv4 firewall filter to classify Real-Time Transport Protocol (RTP) VoIP traffic to a named forwarding class.

1. Configure an IPv4 firewall filter that checks for packets from the UDP protocol. [edit firewall family inet filter voip-filter term sip]

user@host# up

[edit firewall family inet filter voip-filter] user@host# edit term rtp from

user@host# set protocol udp

2. Specify which port is used for UDP and TCP traffic.

[edit firewall family inet filter voip-filter term rtp from] user@host# set port 16384-32767

3. Classify the UDP and TCP packets to the named forwarding class. Specify the same forwarding class you configured for SIP traffic.

[edit firewall family inet filter voip-filter term rtp from] user@host# up

[edit firewall family inet filter voip-filter term rtp] user@host# set then forwarding-class cos-voice

4. Specify that packets matching the filter conditions are accepted. [edit firewall family inet filter voip-filter term rtp]

user@host# set then accept 5. Verify the configuration.

user@host# show from { protocol udp; port 16384-32767; } then { forwarding-class cos-voice; accept; }

Applying the SIP and RTP Firewall Filters for CoS cCPE Services

This procedure applies the firewall filter for SIP and RTP VoIP traffic to the subscriber’s IRB interface.

• To apply the firewall filter, specify the logical interface unit-number designated for the subscriber’s IRB interface, and specify the filter name you defined for SIP and RTP.

[edit]

user@host# edit interfaces irb unit 33 family inet filter input user@host# set voip-filter