which mode? -----Original Message----- From: Philip Lavine [mailto:source_route@yahoo.com] Sent: Wednesday, October 14, 2009 11:20 AM To: nanog Subject: multicast nightmare #42 Please explain how this would be possible: 1 sender 1 mcast group 1 receiver ---------------- = no data loss 1 sender 1 mcast group 2+ receivers on same VLAN and physical segment -------------------- = data loss This message is intended only for the personal and confidential use of the recipients named above. If the reader of this email is not the intended recipient, you have received this email in error and any review, dissemination, distribution or copying is strictly prohibited. If you have received this email in error, please notify the sender immediately by return email and permanently delete the copy you received. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments. Wolverine is not responsible for any recommendation, solicitation, offer or agreement or any information about any transaction, customer account or account activity that may be attached to or contained in this communication. Wolverine accepts no liability for any content contained in the email, or any errors or omissions arising as a result of email transmission. Any opinions contained in this email constitute the sender's best judgment at this time and are subject to change without notice.