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SNMP Syntax for Setting Up Streams

The Haivision Audio/Video Transport Stream MIB (HAI-AVT-STREAM-MIB) is composed of multiple tables described below.

Table

Index

Description

haiAvtStreamNewID.0

none

Next available stream ID

haiAvtStreamInverseTable

IP address type IP address Port

Table to retrieve the stream ID from the IP address and port

haiAvtStreamTable

Stream ID

Stream configuration and status

haiAvtStreamStatsTable

Stream ID

Stream statistics

haiAvtStreamPgmTable

Stream ID Program Index

Transport Stream programs. Only SPTS (Single Program Transport Stream) supported.
Not present for non Transport Streams (directRTP, QuickTime).

haiAvtStreamContentTable

Stream ID
Program Index
Content Index

Contents (video, audio, ad insertion, and/or metadata). Elementary Streams (ES) for Transport Stream. Only one entry for non-TS in which case Program Index is 1. One to three entries exist for Transport Streams.

MIB object names and values are similar to their CLI parameter counterparts while following MIB syntax (for example, haiAvtStreamPort for port, directRtp for directRTP).

Streams are created and deleted using the SNMPv2 RowStatus object (haiAvtStreamRowStatus). All RowStatus values are supported (activenotInServicenotReadycreateAndGocreateAndWaitdestroy). See the description in the SNMPv2-TC.txt file of the MIBs directory. Stream writable objects can only be set at creation time (RowStatus is createAndGo or createAndWait) or while the stream is not active (RowStatus is notInService or notReady).

Objects from the haiAvtStreamPgmTable and haiAvtStreamContentTable cannot be set before the corresponding haiAvtStreamTable row is created and can only be set when the stream entry is not active (haiAvtStreamRowStatus is not active).


Examples

The following example, using netsnmp CLI commands on the Makito X Series encoder, creates a streaming session to IP Address 198.51.100.106 at port 2000, and starts streaming immediately. The Stream ID 0 (haiAvtStreamTable index) is used to create a stream; this value will be set to the first available Stream ID (>=1) on createAndGo or when set to active after createAndWait:

CODE
>snmpset -v2c -c admin localhost haiAvtStreamAddrType.0 = ipv4 haiAvtStreamAddr.0 d 198.51.100.106 haiAvtStreamPort.0 u 2000 haiAvtStreamRowStatus.0 i createAndGo


The example below shows the same command, using the prefix (-IS) and suffix (-Is) options to remove repetition:

CODE
>snmpset -v2c -c admin –IS haiAvtStream –Is .0 localhost AddrType = ipv4 Addr d 198.51.100.106 Port u 2000 RowStatus i createAndGo


To retrieve the Stream ID of the stream just created, the haiAvtStreamInverseTable is used:

CODE
>snmpget -v2c -c admin localhost haiAvtStreamInverseID.ipv4.4.198.51.100.106.2000 
HAI-AVT-STREAM-MIB::haiAvtStreamInverseID.ipv4."198.51.100.106".2000 = HaiAvtStreamID: 5


To create a Stream with a known ID, the haiAvtStreamNewID.0 object reports the next available Stream ID. In the example below, the Transport Stream Program number is set to 7 and the video encoder 1 is selected for the video content. Note that createAndWait is used so the program and content table can be set after stream creation.

CODE
>snmpget -v2c -c admin localhost haiAvtStreamNewID.0 
HAI-AVT-STREAM-MIB::haiAvtStreamNewID.0 = HaiAvtStreamID: 5 
>snmpset -v2c -c admin –IS haiAvtStream –Is .5 localhost AddrType = ipv4 Addr d 198.51.100.106 
Port u 2000 Encapsulation i tsUdp RowStatus i createAndWait 
>snmpset -v2c -c admin –IS haiAvtStream localhost PgmNumber.5.1 i 7 PgmNbContents.5.1 i 2 ContentType.5.1.1 i video ContentToolID.5.1.1 i 1 ContentType.5.1.2 i audio ContentToolID.5.1.2 i 0 
>snmpset -v2c -c admin localhost haiAvtStreamRowStatus.5 i active


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