10/25/2022 0 Comments Steam download keeps dropping to 0![]() Other counts: Total/RPF failed/Other drops(OIF-null, You can see from the show ip mroute 224.1.1.1 command that the incoming interface is Ethernet2/0, while Etheret3/1 is expected.Įnter the show ip mroute 224.1.1.1 count command in order to see if any multicast traffic for this group arrives to the Router 72a and what happens next: ip22-72a#show ip mroute 224.1.1.1 countįorwarding Counts: Pkt Count/Pkts per second/Avg Outgoing interface flags: H - Hardware switched, A - Assert winner Y - Joined MDT-data group, y - Sending to MDT-data group U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement, T - SPT-bit set, J - Join SPT, M - MSDP created entry, L - Local, P - Pruned, R - RP-bit set, F - Register flag, Neighbor Address Interface Uptime Expires Ver Modeįrom the show ip pim neighbor command output, the PIM neighborship looks good.Įnter the show ip mroute command in order to see whether Router 72a has good mroute: ip22-72a#show ip mroute 224.1.1.1įlags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, This is a perfect scenario.Įnter the show ip pim neighbor command in order to see whether Router 72a shows the upstream router (75a) as a PIM neighbor: ip22-72a#show ip pim neighbor The packets come into the Ethernet0/0 interface and are forwarded out the Ethernet0/1 interface. This entry tells you that the multicast packets are sourced from a server whose address is 1.1.1.1, which sends to a multicast group of 224.1.1.1. Since the router runs PIM dense mode (you know it is dense mode because of the D flag), ignore the *,G entry and focus on the S,G entry. Incoming interface: Ethernet0/0, RPF nbr 0.0.0.0 Interface state: Interface, Next-Hop or VCD, State/Mode M - MSDP created entry, X - Proxy Join Timer Running R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT This command examines the multicast route (mroute) for the group address 224.1.1.1: 75a#show ip mroute 224.1.1.1įlags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned First, enter the show ip mroute 224.1.1.1 command in order to see what is going on with Router 75a. Hosts directly connected to Router 75a receive the multicast feed, but hosts directly connected to Router 72a do not. In this figure, multicast packets come into E0/0 of Router 75a from a server whose IP address is 1.1.1.1 and sends to group 224.1.1.1. This network diagram is used as an example. This section provides a solution to the common problem of an IP multicast RPF failure. Router Does Not Forward Multicast Packets to Host Due to RPF Failure The case studies listed here are generic across the protocols, except where noted. #Steam download keeps dropping to 0 how to#You will see which commands are used in order to quickly pinpoint the problem and learn how to resolve it. The case studies in this document walk you through the process to troubleshoot various problems. Like unicast routing, multicast routing has several available protocols, such as Protocol Independent Multicast dense mode (PIM-DM), PIM sparse mode (PIM-SM), Distance Vector Multicast Routing Protocol (DVMRP), Multicast Border Gateway Protocol (MBGP), and Multicast Source Discovery Protocol (MSDP). ![]() Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. Multicast has a concept of Reverse Path Forwarding (RPF) check. When you troubleshoot multicast routing, the primary concern is the source address. #Steam download keeps dropping to 0 software#This document is not restricted to specific software and hardware versions. There are no specific requirements for this document. This document describes common problems and solutions for IP multicast. ![]()
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