Microsoft KB Archive/272641

= XCCC: H.323 Bridging Between Separate Multicast Islands =

Article ID: 272641

Article Last Modified on 2/26/2007

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APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition

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This article was previously published under Q272641



SYMPTOMS
Clients attempting to join an H.323 fallback-enabled conference that is hosted on another conferencing server that is installed into a separate Microsoft Windows 2000 site, cannot see or hear other conference participants.



CAUSE
The connection between the client, the client's local Multipoint Control Unit (MCU)/bridge, and the hosting server does not have multicast connectivity capabilities. This is because the infrastructure does not pass multicast traffic between subnets.



RESOLUTION
Enable multicast capabilities between the two conferencing sites.

Additional query words: XCCC

Keywords: kbprb KB272641

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