Technical Documentation

Supported Platforms
M10i Routers, M120 Routers, M320 Routers, M7i Routers
MX240 Routers, MX480 Routers, MX960 Routers
T640 Routers

Integrated Multi-Service Gateway (IMSG)

Junos® OS, Release 10.3

The IMSG solution, which is part of the Junos Session Border Control (SBC) portfolio, enables you to deliver voice, video, and other multimedia services with assured quality and security. The IMSG solution consists of concurrent, router-integrated support for the border signaling gateway (BSG), border gateway function (BGF), and security services (IPS, stateful and stateless firewall, and IPsec termination).

Overview
Configuration
Administration
Troubleshooting

Overview and Architecture

IMSG Session Border Control Solution Overview

Supported Hardware Platforms for the IMSG

IMSG Architecture Overview

How the IMSG Works

BSG Policy Overview

Policy Configuration Limits

Manipulation of Headers and Request URIs in SIP Messages

Media Anchoring Overview

SIP Routing Overview

SIP Routing with Server Clusters Overview

Locating SIP Servers Using DNS Overview

Virtual Interfaces and NAT Pool Assignment with the IMSG

IMSG VPN Routing Overview

SIP Timers Overview

Providing Redirection for Messages with 3XX Responses Overview

Providing QoS for VoIP Traffic Overview

IMSG Overload Protection Overview

Providing Call Admission Control Overview

Configuring the IMSG

Enabling the BSG Service Package on the PIC or DPC

Setting Up System Processes

Configuring the Services PIC or DPC for the BSG

Configuring the Services PIC or DPC for the BGF

Configuring NAT Pools

Configuring Virtual Interfaces

Creating a Rule That Specifies the NAT Pool to Use on a Virtual BGF

Specifying the Order in Which the BGF Processes Rules

Configuring a Stateful Firewall

Configuring a Service Set

Configuring a Virtual BGF

Creating BSG Instances

Configuring a Gateway Controller

Using Contact and Request URI Information to Match Incoming SIP Messages to Policies

Configuring a New Transaction Policy

Using New Transaction Policies to Route SIP Requests (next-hop)

Using New Transaction Policies to Route SIP Requests Using Server Clusters

Configuring Message Manipulation Rules

Using New Transaction Policies to Manipulate SIP Headers or to Reject SIP Messages

Configuring Call Admission Control

Configuring New Transaction Policy Sets

Configuring a New Call Usage Policy

Configuring New Call Usage Policy Sets

Attaching Policies to a Service Point

Configuring Routing of VPN Calls

Configuring SIP Timers

Configuring Redirection for Messages with 3XX Responses

Configuring QoS and Rate Limiting

Configuring DNS Resolution for Locating SIP Servers

Configuring Firewall and Intrusion Prevention System Services for SIP Signaling Traffic

Verifying the IMSG Configuration
Verifying the IMSG Configuration

Configuration Statements

admission-control (Border Signaling Gateway)

admission-control (New Transaction Policy)

availability-check-profiles

blacklist-period

committed-burst-size

controller-address

controller-port

data-inactivity-detection

default-media-realm

egress-service-point

forward-manipulation

from (New Call Usage Policy)

from (New Transaction Policy)

from (Service Class)

gateway-address

gateway-controller

inactivity-duration

manipulation-rule

match-direction

message-manipulation

message-manipulation-rules

new-call-usage-input-policies

new-call-usage-output-policies

new-call-usage-policy

new-call-usage-policy-set

new-transaction-input-policies

new-transaction-output-policies

new-transaction-policy

new-transaction-policy-set

next-hop-service

on-3xx-response

pool (NAT)

pool (Service Interface Pool)

ports-per-session

reverse-manipulation

route-distinguisher

routing-destinations

routing-instances

service-interface (Gateway)

service-interface

service-interface-pools

service-policies

signaling-realms

stateful-firewall-rules

term (New Call Usage Policy)

term (New Transaction Policy)

term (Service Class)

then (New Call Usage Policy)

then (New Transaction Policy)

then (Service Class)

transport-details

virtual-interface

Monitoring the IMSG

Monitoring Call Statistics

Monitoring Statistics for Failed Calls

Monitoring Call Information for a Specific Contact

Monitoring Call Information for a Specific Request URI

Monitoring Registrations

Monitoring Server Availability

Monitoring Overload Protection

Monitoring Call Admission Control (CAC) Statistics

Monitoring the IMSG Commands

clear services border-signaling-gateway denied-messsages

clear services border-signaling-gateway name-resolution-cache

clear services border-signaling-gateway registrations statistics

clear services border-signaling-gateway registrations subscription

clear services border-signaling-gateway statistics

show services border-signaling-gateway admission-control

show services border-signaling-gateway by-contact

show services border-signaling-gateway by-request-uri

show services border-signaling-gateway calls by-server

show services border-signaling-gateway calls by-service-point

show services border-signaling-gateway calls-duration by-server

show services border-signaling-gateway calls-duration by-service-point

show services border-signaling-gateway calls-failed by-server

show services border-signaling-gateway calls-failed by-service-point

show services border-signaling-gateway denied-messages

show services border-signaling-gateway name-resolution-cache

show services border-signaling-gateway registrations

show services border-signaling-gateway routing-blacklist

show services border-signaling-gateway status

Monitoring the BGF When It is Used With the IMSG

Monitoring RTP and RTCP Traffic

Monitoring Gates

Monitoring Terminations

Monitoring Flows

Monitoring Conversations

Managing the IMSG

Activating and Deactivating BSG Services

Managing the SBC Configuration Process

Managing the IMSG Commands and Statements

Knowledge Base
http://kb.juniper.net/

Maintenance and Failover in the IMSG

Maintenance and Failover in the IMSG Overview

Failover of the Control Service PICs

Verifying the Status of a Master or Backup BSG

Maintenance and Failover Configuration Statements

redundancy-options

Maintenance and Failover Commands

request interface

show services border-signaling-gateway status

show interfaces redundancy

Tracing Border Signaling Gateway Operations
Tracing BSG Operations

Tracing the SBC Configuration Process
Tracing the SBC Configuration Process

Troubleshooting the IMSG Commands and Statement

traceoptions (BSG)

traceoptions (SBC)

Published: 2010-08-08

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