NETGEAR GS724T - ProSafe Switch Manuale di istruzioni

350 East Plumeria Drive

San Jose, CA 95134

USA

July 2011

202-10919-01

v1.0

GS716T and GS724T Smart

Switches

Ethernet Audio Video

Administration Guide

GS716T and GS724T Gigabit Smart Switches

No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated

into any language in any form or by any means without the written permission of NETGEAR, Inc.

Technical Support

Thank you for choosing NETGEAR. To register your product, get the latest product updates, or get support online,

visit us at http://support.netgear.com.

Phone (US & Canada only): 1-888-NETGEAR

Phone (Other Countries): See Support information card.

Trademarks

NETGEAR, the NETGEAR logo, ReadyNAS, ProSafe, Smart Wizard, Auto Uplink, X-RAID2, and NeoTV are

trademarks or registered trademarks of NETGEAR, Inc. Microsoft, Windows, Windows NT, and Vista are

registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or

trademarks of their respective holders.

Statement of Conditions

To improve internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes

to the products described in this document without notice. NETGEAR does not assume any liability that may occur

due to the use, or application of, the product(s) or circuit layout(s) described herein.

Revision History

Publication Part Number Version Publish Date Comments

202-10919-01 v1.0 July 2011 Initial Release

Contents

Chapter 1 Ethernet Audio Video

Multiple Registration Protocol Configuration . . . . . . . . . . . . . . . . . . . . . . . .5

MRP Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

MRP Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

MMRP Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

MSRP Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

MSRP Reservation Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Qav Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

MSRP Streams Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

802.1AS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

802.1AS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

802.1AS Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

802.1AS Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Index

1. Ethernet Audio Video

The Ethernet Audio Video (Ethernet AV or EAV) features available on the GS716T and GS724T

Smart Switches provide audio-video quality of service to Ethernet to enhance wire-line

networking for digital entertainment content streaming. The GS716T and GS724T switches

support the following EAV features:

• End-to-end Bandwidth guarantees to Ethernet using QoS and admission control

• Stream reservation through the Multiple Registration Protocol (MRP) and Multiple Stream

Reservation Protocol (MSRP)

• Traffic-shaping profiles through 802.1Qav

• Precise timing and synchronization in Ethernet networks by using IEEE 802.1AS

EAV, which is also known as Audio Video Bridging (AVB), helps ensure that the synchronization

requirements are met for time-sensitive applications, such as audio and video, across bridged

and virtual bridged local area networks consisting of LAN media where the transmission delays

are fixed and symmetrical. This includes the maintenance of synchronized time during normal

operation and following addition, removal, or failure of network components and network

reconfiguration.

Use the MRP and 802.1AS links under the Switching tab to configure and monitor the following

EAV features:

• Multiple Registration Protocol Configuration on page 5

• 802.1AS on page 17

Multiple Registration Protocol Configuration

Multiple Registration Protocol (MRP) is a base registration protocol that enables devices

running an MRP application to register attributes to other devices in a network. MRP

provides an application to register attributes such as bandwidth requirement for a given AV

stream and MAC address information. It is used by various applications to propagate the

registration. GS716T and GS724T Smart Switches support the following MRP applications:

• Multiple MAC Reservation Protocol (MMRP)

• Multiple Stream Reservation Protocol (MSRP)

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

MMRP allows for the propagation MAC address information in the network, and allows for the

registration and deregistration of both individual MAC address information and group MAC

address membership. End stations may request to join or leave a multicast group, or to

dynamically registered and deregistered if MMRP is administratively enabled on GS716T and

GS724T Smart Switches.

MSRP reserves necessary resources in the network to facilitate time sensitive traffic to flow

end to end. In a typical network, there are multiple Talkers (those who transmit streams) and

multiple Listeners (those who receive streams from one or many Talkers). Each flow has

specific bandwidth, frame rate, and time sync requirements. With the use of MSRP these

resources are guaranteed through all intermediate devices that are between any talker and

listener.

Note: MRP framework must be available and enabled in all intermediate

devices to ensure that the propagation of the attributes occurs

throughout the network.

With MRP, network attributes are declared, registered, withdrawn, and removed completely

dynamically without any user intervention. This dynamic nature is especially useful in

networks where:

• Network attributes are likely to change frequently, requiring reconfiguration of the

intermediate devices.

• Recipients of these attributes frequently increase or decrease in number.

• Each of these changes without a dynamic self-adjusting framework would require

constant attention from the network administrator.

MRP Configuration

Use the MRP Configuration page to configure global MRP settings for the switch. To access

the basic MRP Configuration page click the Switching tab, then click MRP >Basic > MRP

Configuration.

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

To configure the MRP settings:

1. Enable or disable MMRP globally on the switch. MMRP provides an application to

2. Enable or disable MSRP globally on the switch. MSRP provides an application to register

bandwidth requirement for a given AV stream. The default mode is Disable.

3. If you enable MSRP, configure the following MSRP settings:

a. Enable or disable MSRP talker pruning. The MSRP talker is the source of an AV

stream. Default mode is Disable.

b. Enable or disable the MRP Periodic State Machine for MMRP on the system. Default

mode is Disable. For this setting to take effect, MMRP must be enabled, but MSRP

does not need to be enabled.

c. Enable or disable the MRP Periodic State Machine for MSRP on the system. Default

mode is Disable.

d. In the MSRP Max Fan In Ports field, specify the maximum number of the ports

where MSRP registrations are allowed.

e. In the MSRP Max Frame Size field, specify the maximum frame size allowed for an

MSRP frame. The valid range for the frame size is 64–9216 octets.

4. Configure the 802.1Qav mapping for the Class A and/or Class B EAV streams. Class A

streams have a higher transmission priority than Class B traffic.

• In the EAV Priority field, specify the priority for each EAV stream class. The range is

0–7.

• In the EAV Remap Priority field, specify the remap priority for non-EAV traffic. The

range is 0–7.

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to

the latest value of the switch.

6. If you make any changes to the page, click Apply to apply the change to the system.

MRP Port Settings

Use the MRP Port Settings page to configure the per-port MRP mode and timer settings. The

timers control when and how often various messages are transmitted on each interface.

To access the Port Settings page click Switching>MRP >Advanced > Port Settings in the

navigation tree. In the following image, the MMRP mode on ports g4 and g5 is being enabled.

To configure the MRP port parameters:

1. Select the check box next to the port to configure. You can select multiple ports to apply

the same settings to the selected interfaces. Select the check box in the heading row to

apply the same settings to all interfaces.

2. Configure the following MRP port settings:

a. Enable or disable MMRP on the interface. The default mode is Disable.

b. Enable or disable MSRP on the interface. The default mode is Disable.

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

c. Specify the value, in centiseconds, of the MRP Join Timer. The range is 10 to 100

centiseconds, and the default value is 20.

d. Specify the value, in centiseconds, of the MRP Leave Timer. The range is 10 to 600

centiseconds, and the default value is 120.

e. Specify the value, in centiseconds, of the MRP LeaveAll Timer. The range is 200 to

6000 centiseconds, and the default value is 2000.

ClassA/ClassB Boundary Port fields are not configurable and show whether the interface

is a boundary port.

3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to

the latest value of the switch.

4. If you make any changes to the page, click Apply to apply the change to the system.

MMRP Statistics

The MMRP Statistics page displays information regarding the MMRP frames transmitted and

received by the switch and by each interface. To access the MMRP Statistics page click the

Switching tab, then click MRP >Advanced > MMRP Statistics.

The following table describes the fields on the MMRP Statistics page.

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

To reload the page, click Refresh. To clear the statistics for one or more ports, select the check

box next to the interface or interfaces, and click Clear. To clear the statistics for all interfaces,

select the check box in the heading row, and click Clear Counters.

MSRP Statistics

The MSRP Statistics page displays information about the MSRP frames transmitted and

received by the switch and by each interface. To access the MSRP Statistics page click the

Switching tab, then click MRP >Advanced > MSRP Statistics.

Table 1-1.

Field Description

Global MMRP Statistics

Frames Received Shows the number of MMRP frames which were received on the switch.

Bad Header Shows number of MMRP frames with bad headers which were received

on the switch.

Bad Format Shows number of MMRP frames with bad PDUs body formats which

were received on the switch.

Frames Transmitted Shows number of MMRP frames which were transmitted on the switch.

Transmission Failures Shows number of MMRP frames that the switch failed to transmit.

Per-Interface MMRP Statistics

Interface Identifies the interface associated with the rest of the MMRP statistics in

the row.

Frames Received Shows number of MMRP frames which were received on particular

interface.

Bad Header Shows number of MMRP frames with bad headers which were received

on the particular interface.

Bad Format Shows number of MMRP frames with bad PDUs body formats which

were received on the particular interface.

Frames Transmitted Shows number of MMRP frames which were transmitted on the

interface.

Transmission Failures Shows number of MMRP frames transmitting of which were failed on

particular interface.

Ethernet Audio Video

GS716T and GS724T Gigabit Smart Switches

The following table describes the fields on the MSRP Statistics page.

Table 1-2.

Field Description

Global MSRP Statistics

Message Queue Add

Failures

Shows the number of messages that failed to be added to the

queue.

Frames Received Shows number of MSRP frames that have been received on the

switch.

Bad Header Shows number of MSRP frames with bad headers that have been

received on the switch.

Bad Format Shows number of MSRP frames with bad PDUs body formats that

have been received on the switch.

Frames Transmitted Shows number of MSRP frames which that have been

transmitted on the switch.

Transmission Failures Shows number of MSRP frames the switch failed to transmit.

Per-Interface MSRP Statistics

Interface Identifies the interface associated with the rest of the MSRP statistics in

the row.

Frames Received Displays the number of MSRP frames which were received the

interface.

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