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Solved: how to trace the source of a multicast group - Cisco
https://community.cisco.com/t5/switching/how-to-trace-the-source-of-a-multicast-group/td-p/2916413
I got those multicast group below. I am just wondering how i can trace the source of a multicast group. i want to find out which port is connected to which source, and there ip address. WS4500X#sh ip igmp groups IGMP Connected Group Membership Group Address Interface Uptime Expires Last Reporter Group Accounted
Basic Multicast Troubleshooting Tools - Cisco
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/13726-57.html
Multicast Packet - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/computer-science/multicast-packet
Broadcast packets and multicast packets are normal parts of your network’s operation. When broadcast and multicast traffic is abnormally high for your network, it may be due to a broadcast storm. The best way of identifying the problem is by analyzing network response times and network operations.
Tracing PIM Packets | IP Multicast
https://flylib.com/books/en/2.516.1/tracing_pim_packets.html
The trace options let you track all PIM operations and packets. More useful is being able to trace specific packet types, such as Join/Prune messages and auto-RP messages. You can also select additional options, to get either detailed traces or limit the traces only to packets sent or received by the router: aviva@RouterA# set flag join ?
how do I enable ip multicast-routing in packet tracer - Cisco
https://community.cisco.com/t5/switching/how-do-i-enable-ip-multicast-routing-in-packet-tracer/td-p/3297833
how do I enable ip multicast-routing in packet tracer. I tried running the "ip multicast-routing" command in packet tracer router but it show "invalid input detected at '^' marker". Is multicasting disabled in packet tracer or something? Labels: Labels: Other Switching. 2 people had this problem. I have this problem too.
How to capture Multicast packets in wireshark - Ask …
https://ask.wireshark.org/question/2893/how-to-capture-multicast-packets-in-wireshark/
So if the card is connected to a managed switch which only outputs multicast packets on ports to which a subscription for that multicast group came before, you may not see them even if your capturing card is in promiscuous mode because the switch won't send them to you. link Comments
Organizing multicast receivers deterministically by packet-loss ...
https://link.springer.com/article/10.1007/s00530-003-0050-2
Tracer uses MTRACE packets in the Internet Group Management Protocol to allow a receiver host to obtain its path to the source of a multicast group. Receivers use the multicast path information to determine how to achieve local error recovery and effective congestion control.
Understanding IP Multicasting - Practical IOT
http://www.steves-internet-guide.com/introduction-multicasting/
-IP multicasting allows a host to send a single packet to thousands of hosts across a routed network i.e. The Internet. It is used mainly for audio (radio) and video distribution. In Networking a packet can be sent to: A single host – Unicast = (TCP and UDP) All hosts -Broadcast – (UDP only) A group of hosts – Multicast - (UDP only)
Cisco SD-WAN Monitor and Maintain Configuration Guide …
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/Monitor-And-Maintain/monitor-maintain-book/packet-trace.html
The Packet Trace feature enables you to debug packet loss on edge devices and to inspect any forwarding behavior of traffic flows on the devices in the network. You can configure packet tracer with various conditions based on which the flow of the packets is segregated and is captured for tracing.
MTRACE(8) - print multicast path from a source to a receiver
https://www.gsp.com/cgi-bin/man.cgi?topic=MTRACE
packet rate and loss statistics. -S n Change the interval between statistics gathering traces to nseconds (default 10 seconds). -t ttl Set the ttl(time-to-live, or number of hops) for multicast trace queries and responses. The default is 127, except for local queries to the "all routers" multicast group which use ttl 1. -T
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