Nortel Networks NN10035-111, MCP 1.1 FP1 User Manual

Succession Multimedia Communications Portfolio

MCP RTP Media Portal

Basics

Standard MCP 1.1 FP1 (02.02) April 2003

NN10035-111

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Overview

How this chapter is organized

This chapter is organized as follow s:

• “Functional description” on page 3

• “Hardware ” on p age 4

• “Software update maintenance loads” on page 7

• “OAM&P strategy” on page 7

• “Interfaces” on page 7

Functional description

The Real-time Transport Protocol (RTP) Media Portal is an optional component of the network that performs many media-layer functions. The RTP Medi a Port al addresses me dia specific issues with advanced service delivery, Internet addressing efficiencies, and system security. It functions as a media Network Address and Port Translation (NAPT) point that shields priv ate netwo rk co mp on ents from external exposure through leaks in the media streams. The RTP Media Portal also enables elements in the private network to safely communicate with elements in the public network. The RTP Media Portal provides IP address/port pair mapping between internal and external network components, as well as media anchoring and media pivot abilities for terminals.

Figure 1, “Network Component Interoperability,” on page 4 is a graphical representation of the RTP Media Portal interworking among other components in the Multimedia Communications Portfolio.

4 Overview

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Figure 1 Network Component Interoperability

The clouds in the d iagram represe nt two distin ct networks. The Private Network cloud interacts with the Public Network cloud through the different edge components. The RTP Media Portal provides media-layer functionality for Real-time Transport Protocol (RTP), Real-time Transport Control P r otocol (RTCP), and User Datagram Protocol (UDP) transmissions.

Hardware

Description

The RTP Medi a Portal resides on a Motorola CPX8216T pl atform which is a CompactPCI (cPCI) chassis design.

The chassis provides th e basic operatin g environment (su ch as power , backplane, cooling , and mounti ng slot s) requi red to house cPCI-based single-board computers. The CPX8216T partitions the chassis into two separate logical oper ational domains (dividing the chassis sh elf into two half-shelves consisting of 8-slots each).

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An RTP Media Portal occupies a single chassis domain (side) on a CPX8216T. Therefore, a single CPX8216T can host two RTP Media Portal components (one in chassis Domain A, the other in chassis Domain B).

Note: Chassis domai ns ar e not internet domains. This is just another terminology intended to identify Side A and Side B of the chassis. Other terms often u sed inte rchange ably are: Doma in A a nd Domain B, as well as Left Domain and Right Domain.

Figure 2 Card slots for the two different domains

Overview 5

Note 1: The Hot Swap Controller in the Left Domain (Domain A) controls the Right Dom ain (Domain B). The Hot Swap Controller in the Right Domain (D o mai n B) contr o ls th e Le ft D om ain ( D omai n A) .

Note 2: If the chassis is viewed from the front, the slots are numbered from left to right (1-16), and if viewed from the rear, the slots are numbered from right to left (1-16).

The CPX8216T dual 8-slot architecture further refines the domain definition so that each chassis domain is dedicated to a Host CPU board (with an associat ed transition module in the r ear), an other slot is

6 Overview

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dedicated to the Motorola Hot Swap Controller (HSC), and the remaining six slots can be populated with peripheral resource cards (Input/Output cards with an associated transition module in the rear)).

Each chassis half shelf consists of the following hardware components:

• Intel processor board with 1 GB memory and a SCSI Input/Output (I/O) daughter board (CPV5370 host card)

• Hot Swap Controller and Bridge (HSC) module

• SCSI CD-ROM drive

• SCSI hard drive

• Floppy drive

• Motorola MCPN7 65 card( s) wi th 64 MB RAM

• Available ac or dc power options

Additional hardware (non-Motorola):

• Mouse, keyboard, monitor

Figure 3 Motorola chassis CPX8216T

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Software update maintenance loads

Information on updating software loads for the RTP Media Portal are covered in “Upgrades” on page 13.

OAM&P strategy

The OAM&P strategy for the system is to manage operations from a central location. Th e central location for OA M&P manag ement is in the System Management Console. From the System Management Console, you can view and perform operations on the various components in the system.

Interfaces

Protocols

While in service, the RTP Media Portal interfaces with the network through the following protocols:

• MGCP+ is the Enhanced Media Gateway Co ntr o l Pr oto c ol that i s used for messaging between the RTP Media Portal and the SIP Application Module, and controls the making, modification and breaking of media session c onnections.

• RTP is the Real-time Tr an spo rt Pr oto col for tran spo rt of real - ti me media streams (for example, audio and video) across a packet network.

Overview 7

• RTCP is the Real-time Transport Control Protocol that provides a means of sharing session data (for example, performance data) between endpoints.

• UDP is the User Dat agram Protocol that provides data-ba sed media streams (for example, file transfer).

8 Overview

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Figure 4 RTP Media Portal interfaces

Network Interfaces

The Host CPU card provides the signaling and OAM data interface to/from the Private Network. Each I/O card (commonly referred to as a blade) provides a media stream interface to the Private Network and a media stream interface to the Public Network.

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Figure 5 Signaling and OAM interface - CPV5370 Host CPU

Overview 9

The rear transition module for the CP5370 Host Central Processing Unit (CPU) card contains the following:

• COM2 port for connection to a terminal server and local monitor.

• Two Ethernet ports which provide connectivity to the Private Network. The connection carries signaling and OAM data.

— The Ethernet 1 port is always used to provide an active

connection.

— The Ethernet 2 po rt provides a st andby connection. The sta ndby

ethernet function is enabled by default through the “Activate IP Failover” prope rty when config uring the R TP Media Port al. (See Table 2, “RTP Media Portal tab configurable properties,” on page 33.)

These Ethernet connections carry the following:

• MGCP+ signaling to comm unicate with the SIP Ap plicatio n Mo dule.

• operations, admin i strati on and maintenance (OAM) data to the Management Modu le.

10 Overview

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Network interfaces on each of the Input/Output cards (MCPN7 65) in the RTP Media Po rtal pro vide a p ath for media str eams to/from th e Private Network and Public Network.

Figure 6 MCPN765 Media stream interface

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The RTP Media Portal uses the following input/output (I/O) cards:

• MCPN765 front card

• TM-PIMC-0101 rear transition module

The transition module contains two, 10/100 BaseT Ethernet connections for RTP/RTCP/UDP media streams. Each pair of MCPN765 and TM-PIMC-0101 cards perform the following functions:

• Provides connectivity for R TP/RTCP/UDP media streams to pa ss between the Private Network and the Public Network, as well as the public to public network.

• Relays media packets between end points.

• Performs Network A ddre ss a nd Po rt Translation (NAPT) functions.

NET ports

• NET1 port = IP address of Public Network

• NET2 port = IP address of Private Network

The RTP Media Portal Host CPU is o nly connected to the private network. The RTP Media Portal is an edge component that is dual-homed on the public network and the Private Network. It is the Peripheral I/O cards that span these two distinct networks.

Overview 11

User interfaces

The System Management Console is used for fault and configuration management of the RTP Media Portal. RTP Media Portal management data is stored on both the Management Module and the Database Module. The Mana gement Module s tores alarm, log, a nd OM data. The Database Mod ule stor es conf iguration data.

12 Overview

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Upgrades

How this chapter is organized

This chapter is organized as follow s:

• “OAM&P strategy” on page 13 — “RTP Media Portal software upgr ade” on page 13

• “Task flows” on page 14 — “Shutdown the RTP Media Portal component” on page 14 — “Update a software load” on page 15

OAM&P strategy

RTP Media Portal software upgrade

This section describes the update strategy for the RTP Media Portal. The RTP Media Portal run-time sub-component can be upgraded by deploying the new software to the target node from the System Management Console.

Note: The SIP Application Module m ay try to contact th e RTP Media Portal whi le the upgrade is in p rogress, thus genera ting error logs. To minimize impact to service, the RTP Media Portal should first be SHUTDOWN so that it does not a ccept n ew servi ce re quest s . While shutting down, the RTP Media Portal is still processing established media sessions. These pre-existing media sessions will slowly become inactive as the calls end. The RTP Media Portal will automatically transition into the LOCKED state when there are no active media sessions present. When this occurs, it is safe to proceed with the upgrade without affecting service.

Updating the software of the new ru n- tim e su b- com p onent(s) from the System Management Console can commence.

A reset is then issued to the RTP Media Portal from the System Management Console. This reboots the host CPU, which in turn

14 Upgrades

Task flows

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reboots the Peripheral CPUs. When the RTP Media Portal recovers from the reset, it is running (UNLOCKED) with the upgraded software.

Note: It is possible to update one RTP Media Portal and reboot it while the other half shelf is running the load that has not been updated. Once one half shelf is updated, the other half shelf can be locked, updated, and rebooted. Upgrading all RTP Media Portals

concurrently will cause a service outage.

The length of outage due to the reboot is approximately 3-5 minutes.

Note 1: Software loads are encrypted for security reasons. Note 2: If a component upgrade fails, it does not roll back

automatically. A roll back prompt appears. If the upgrade is not successful, note as much of the event as possible and contact your next level of support.

To avoid any problems with the SIP Applicat ion Module, the following procedure describes the steps that must be followed when updating a software load for the RTP Media Portal component.

From the System Management Console:

1 Shutdown the R TP Media Portal compon ent. See “Shutdown the

RTP Media Portal component” on page 14.

2 Update the software load for the RTP Media Portal component.

See “Update a software load” on page 15.

Shutdown the RTP Media Portal component

The following procedure describes how to shutdown the RTP Media Portal component:

From the System Management Console

1 Select the RTP Media Portal Server, select Com ponents and

then select the appropriate RTP Media Portal component .

2 To Shutdown the component, either right-click and select

Shutdown or select Shutdown from the Operations menu.

3 The RTP Media Por t a l com po ne nt w ill shutdown gracefull y and

go into a LOCKED state, as seen in the General Information Area of the System Management Console.

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Update a software load

The following procedure describes how to update a load for the RTP Media Portal component:

From the System Management Console

1 Select the RTP Media Portal Server, select Components,

right-click the desired component and select Update.

Figure 7 Updating the RTP Media Portal from the menu tree

Upgrades 15

You can also launch the update from the pull-down Configuration menu, as shown:

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