Multicast Packets Prevent Successful Autodisconnect (197801)
The information in this article applies to:
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
This article was previously published under Q197801 SYMPTOMS
Even though you have configured a dial-up networking connection to your
Internet service provider (ISP) for autodisconnect, the modem stays
connected to the ISP until you manually disconnect.
CAUSE
This problem occurs because IP multicast packets, such as those for
Interior Gateway Routing Protocol (IGRP) or Routing Information Protocol
version 2 (RIP2), are being transmitted from the ISP's routers in a shorter
time interval than the autodisconnect time setting.
RESOLUTION
To resolve this issue:
- Contact your ISP and request that the time interval between multicast traffic to your connection be increased or disabled.
- Decrease the autodisconnect timer value on the computer to a value less than the time interval between the reception of the multicast packets.
For additional information, please click the article number below to view the article in the Microsoft Knowledge Base:
138365 How the Autodisconnect Works in Windows
MORE INFORMATION
For more information on IP multicast packets, see RFC1112.
Paper copies of all RFCs are available from the NIC, either individually or
on a subscription basis (for more information contact NIC@NIC.DDN.MIL).
Online copies are available via FTP or Kermit from NIC.DDN.MIL as
rfc/rfc####.txt or rfc/rfc####.PS (#### is the RFC number without leading
zeroes).
| Modification Type: | Major | Last Reviewed: | 11/19/2003 |
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| Keywords: | kbnetwork kbprb KB197801 |
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