Table Of Contents

Disabling RTP Flows

Contents

Restrictions for Disabling RTP Flows

Information About Disabling RTP Flows

Disabling RTP Flows

Additional References

Related Documents

Standards

MIBs

Technical Assistance

Disabling RTP Flows

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When you audit RTCP packets and flows through the media gateway controller (MGC), you can exclude the RTP statistics by using the rsb property of the gate management (GM) package (referred to elsewhere as rsb/gm). This action temporarily disables the RTP flow for a given termination. Property value control occurs at the MGC level, and not at the data border element (DBE) level.

Feature History for Disabling RTP Flows

Release	Modification
Release 3.5.0	This command was first introduced on the Cisco CRS-1.
Release 3.6.0	No modification.

Contents

This module contains the following sections:

•Restrictions for Disabling RTP Flows

•Information About Disabling RTP Flows

•Disabling RTP Flows

•Additional References

Restrictions for Disabling RTP Flows

•Turning the gm/rsb property OFF or ON has no effect on other flow types; it affects only RTP flows.

Information About Disabling RTP Flows

gm/rsb ON

With this property setting, the DBE opens an RTCP port for each RTP flow, with the RTCP port number always one (1) number higher than the RTP port, with which it is associated. The DBE then reserves 5% in excess of the resources required for an RTF flow to process the RTCP stream.

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Note This is the default setting for the DBE.

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gm/rsb OFF

OFF overrides the default behavior of the DBE in the following ways:

•DBE does not open the RTCP port for any RTP flows nor can any other flows use the RTCP port.

•DBE fails to reserve additional resources for processing the RTCP stream.

•If you turn off RTCP behavior on one termination, it disables RTCP reports on the stream in both directions. This results, because the DBE does not generate its own RTCP reports, but rather passes the reports through that it receives from the endpoints.

•Turning off RTCP behavior also prevents the DBE from reporting any of the statistics it gathers from snooping the RTCP reports. These are the statistics reported in the End-Point Statistics package.

Disabling RTP Flows

To confirm the state of the MGC gm/rsb setting, use the auditvalue {media} request for the termination.

Example:

gm/rsb settings LocalControl descriptor in Add request and MGC send Add request to 
DBE.

AU=0x12345678:0x90ABCDEF:0x000000000000000000000000123456

!/3 [200.50.255.200]:2944

T = 8491 { 

  C = $ { 

    A = cisco/sip/gn/0/1/0/1/ac/$ { 

      M {TS {SI =IV},

        ST = 1 {

          O {MO = SR, ds/dscp = 1d, gm/rsb=ON},

          L {

v=0

c=IN IP4 $

m=application $ udp 0},  

          R {

v=0

c=IN IP4 0.0.0.0

m=application 0 udp 0}}},

     SG { ipnapt/latch { napt=LATCH }}}, 

    A = cisco/sip/gn/0/2/0/2/bb/$ {

      M {TS {SI=IV}, 

        ST = 1 { 

          O {MO = SR, ds/dscp = 1d, gm/rsb=ON}, 

          L { 

v=0

c=IN IP4 $

m=application $ udp 0},

          R {

v=0

c=IN IP4 0.0.0.0

m=application 0 udp 0}}},

     SG { ipnapt/latch { napt=LATCH }}}

DBE reply:

AU=0x00000000:0x00000000:0x000000000000000000000000

!/3 [200.50.255.254]:2944

P=8491{

C=27{

A=cisco/sip/gn/0/1/0/1/ac/1{

ST=1{

L {

v=0

c=IN IP4 202.50.255.1

m=application 20000 udp 0

}}}}},

A=cisco/sip/gn/0/2/0/2/bb/2{

ST=1{

L {

v=0

c=IN IP4 202.50.255.1

m=application 20001 udp 0

}}}}}}}

MGC send audit request to DBE:

AU=0x12345678:0x90ABCDEF:0x000000000000000000000000123456

!/3 [200.50.255.200]:2944

Transaction = 8501 {

   Context = 27 {

     AuditValue = cisco/voice/gn/*/*/*/*/*/* {

       Audit { M,SG }

    }

DBE reply:

AU=0x00000000:0x00000000:0x000000000000000000000000

!/3 [200.50.255.254]:2944

P=8501{

C=27{

AV=cisco/sip/gn/0/1/0/1/ac/1{

M{

TS{SI=IV},

ST=1{

O{MO=SR, ds/dscp=1d, gm/rsb=on},

L {

v=0

c=IN IP4 202.50.255.1

m=application 20000 udp 0},

R {

v=0

c=IN IP4 0.0.0.0

m=application 0 udp 0},

SA}},

SG{IPNAPT/LATCH{NAPT=LATCH}}},

AV=cisco/sip/gn/0/2/0/2/bb/2{

M{

TS{SI=IV},

ST=1{

O{MO=SR, ds/dscp=1d, gm/rsb=on},

L {

v=0

c=IN IP4 202.50.255.1

m=application 20001 udp 0},

R {

v=0

c=IN IP4 0.0.0.0

m=application 0 udp 0},

SA}},

SG{IPNAPT/LATCH{NAPT=LATCH}}}}}

Additional References

The following sections provide references related to this feature.

Related Documents

Related Topic	Document Title
Cisco IOS XR master command reference	Cisco IOS XR Master Commands List
Cisco IOS XR SBC interface configuration commands	Cisco IOS XR Session Border Controller Command Reference
Initial system bootup and configuration information for a router using the Cisco IOS XR Software	Cisco IOS XR Getting Started Guide
Cisco IOS XR command modes	Cisco IOS XR Command Mode Reference

Standards

Standards	Title
No new or modified standards are supported by this feature, and support from existing standards has not been modified by this feature.	-

MIBs

MIBs	MIBs Link
—	To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu: http://cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

Technical Assistance

Description	Link
The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.	http://www.cisco.com/techsupport