Hi Himanshu, In some vendor's IGMP & MLD Snooping implementation, if an interface receives a PIM hello packet, this interface will become multicast router interface. So switch concerns about PIM hello packet. Thanks a lot! BR/Hongji -----Original Message----- From: Himanshu Shah via Datatracker <noreply@xxxxxxxx> Sent: Saturday, June 20, 2020 10:43 AM To: rtg-dir@xxxxxxxx Cc: last-call@xxxxxxxx; draft-ietf-pim-igmp-mld-snooping-yang.all@xxxxxxxx; pim@xxxxxxxx Subject: Rtgdir last call review of draft-ietf-pim-igmp-mld-snooping-yang-13 Reviewer: Himanshu Shah Review result: Ready Summary: No issues found. This document is ready for publication. Comments: This document is very well written. It is precise, clear and easy to understand the intent. Following comments for clarification (at least for me) | | +--ro num-pim-hello? yang:counter64 Do IGMP switches count PIM hello? Major Issues: No major issues found. Minor Issues: No minor issues found. -- last-call mailing list last-call@xxxxxxxx https://www.ietf.org/mailman/listinfo/last-call