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Switch drop PTP multicast
Hi , I try to configure a m4300 8x8f switch with three connected devices, a PTP source and two PTP receiver. But i have a problem, the switch seems to drop every ptp multicast packet. I have acti...
Problem fixed, IGMP on master clock was is in version 2 but IGMP on netgear switch was is in version 3. Downgrade to version 2 and all works fine.
Thanks for the quick reply, I've email the support (to your attention) with the appropriate files.
Hi KrustyK,
Got the tech-support file from you. Thanks again!
Looks like the configuration is correct!
Could you please run CLI command on the switch as below:
1. show ip mroute summary
2. show ip igmp groups x/x/x(the PTP receiver port number)
3. show interface counters(do 'clear counters all' first)
BTW: I try on local switch, it's success. DUT can forward the multicast packet success.
(M4300) #show ip mroute summary
Multicast route table summary
Incoming Outgoing
Source IP Group IP Protocol Interface Interface List
--------------- --------------- ---------- --------- ---------------
192.168.2.1 239.1.1.1 PIMDM 1/5/1 1/11/1 1/11/2
(M4300) #show ip igmp groups 1/11/1
IP Address..................................... 192.168.4.2
Subnet Mask.................................... 255.255.255.0
Interface Mode................................. Enabled
Querier Status................................. Querier
Multicast Group IP............................. 239.1.1.1
(M4300) #show ip igmp groups 1/11/2
IP Address..................................... 192.168.5.2
Subnet Mask.................................... 255.255.255.0
Interface Mode................................. Enabled
Querier Status................................. Querier
Multicast Group IP............................. 239.1.1.1
(M4300) #
Hi KrustyK,
Sorry, I notice that you disable igmp on global config, so it will cause switch cannot learning PTP receiver info.
So please remove below config and try agian:
no set igmp
no set igmp header-validation
no set igmp querier
no set igmp proxy-querierJust to be sure, to remove:
no set igmp
no set igmp header-validation
no set igmp querier
no set igmp proxy-querierI have to enter:
set igmp
set igmp header-validation
set igmp querier
set igmp proxy-querierIn the global config menu ?
But, in the web interface IGMP is enable, maybe it's a bug ?
Hi KrustyK
It's IGMP snooping global config.
'set igmp' is for IGMP Snooping global config;
'ip igmp' is for IGMP global config;
According to your cli command display info, looks like port 1/0/11 and 1/0/13 didn't learn IGMP groups(224.0.1.129) member. One more question: Is the PTP receiver can generate IGMP report to join the groups(224.0.1.129)?
Could you please collect the IGMP packet statistics for port 1/0/11 and 1/0/13, the command as below:
show ip igmp interface stats 1/0/11
show ip igmp interface stats 1/0/13
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