Microsoft KB Archive/270115

{|
 * width="100%"|

XCCC: Testing Multicast Connectivity with Xping.exe

 * }

Q270115

-

The information in this article applies to:


 * Microsoft Exchange 2000 Conference Server

-

IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the &quot;Restoring the Registry&quot; Help topic in Regedit.exe or the &quot;Restoring a Registry Key&quot; Help topic in Regedt32.exe.

SUMMARY
This article describes how to determine whether Internet Protocol (IP) multicasting connectivity functionality is available by using the Xping.exe utility between the client and server to test for multicast connectivity.

Exchange 2000 Conferencing service participants who use a Microsoft Windows 2000-based computer connect to audio and video conferences by using IP multicasting connectivity. However, there may be situations in which multicast connectivity cannot be achieved; for example, if there are non-multicast routers between the client and server.

MORE INFORMATION
To use the Xping utility to test for multicasting connectivity:

Create a registry value on the conferencing server to enable the Conference Management service to respond to the client query.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the &quot;Changing Keys and Values&quot; Help topic in Registry Editor (Regedit.exe) or the &quot;Add and Delete Information in the Registry&quot; and &quot;Edit Registry Data&quot; Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT or Windows 2000, you should also update your Emergency Repair Disk (ERD).

To create this registry value:

 Start Registry Editor (Regedt32.exe). Locate the following key in the registry: On the Edit menu, click Add Value, and then add the following registry value: Quit Registry Editor.

At a command prompt, run the following command:

"xping -m IP_address_of_the_conference_server -listconf" The preceding command queries the conferencing server for all booked conferences and generates a list of specific attributes for each conference that is similar to the following:

Organizer:domain\admin

Description: Online Perpetual Meeting

URL: HTTP://LASCOLINASCONF/conferencing/xipconf.asp?h323=1&sdp://v%3d0&o%3dSYSTEM+3174150207+1+IN+IP4+lascolinasconf.conferencing.com&s%3d&u%3dHTTP%3a%2f%2fLASCOLINASCONF%2fconferencing%3fid%3dBAAAAIIA4AB0xbcQGoLgCAAAAAAwzRMb9Pq%2fAQAAAAAAAAAAEAAAACRkycnwYJFFhDkjvyMxttk%3d&c%3dIN+IP4+228.157.3.51%2f15%2f1&t%3d3174033600+3187348200&a%3dsendallowed%3a1&a%3dduration%3a0000219966&a%3dpingport%3a018462&m%3daudio+18464+RTP%2fAVP+0&c%3dIN+IP4+228.157.3.51%2f15%2f1&a%3dsendonjoin%3a1&m%3dvideo+49192+RTP%2fAVP+34&c%3dIN+IP4+228.157.3.51%2f15%2f1&a%3dsendonjoin%3a1&

Conference type: Public conference, Audio/Video Conference

Conference Start time (UTC): 7/31/2000 12:00:00 PM

Conference Start time (Local): 7/31/2000 7:00:00 AM

Conference Stop time (UTC):1/1/2001 1:30:00 PM

Conference Stop time (Local):1/1/2001 8:30:00 AM

Max Extension Time = 60 minutes

Grace period after = 0 seconds

Multicast Address = 228.157.3.51

Random address? Yes

Scope ID = 0x0

Scope Description = 

Server ID = 0x0 ()

Audio port = 18464

Ping port = 18462

Lease expiry time = 1/1/2001 2:30:00 PM

Audio payload type = 0

Send Audio on Join = 1

Video port = 49192

Video payload type = 34

CIF = 0

Send Video on Join = 1

Maximum number of participants = 20

Current number of participants = 0

Obtain the server's IP Multicast address and ping port information from the list of attributes that is generated, and then test multicast connectivity by running the following command:

"xping.exe -m IP_multicast_address_of_conference_server -p ping_port" If the server responds, there is multicast connectivity between the two computers.

For Help for the Xping.exe utility, run the following command from a command prompt:

"xping.exe /?" Additional query words: xmrp x2kclnprotht

Keywords :

Issue type : kbhowto

Technology :