Nexus 9000 IGMP join issue

[jon_panes24]

Hi All,

Device:  cisco Nexus9000 C9348GC-FXP Chassis

NXOS Version: 9.3.7

We are seeing a behavior in our IGMP joins that not all of the groups are joining at the same time. Checking the IGMP debug, I'm getting these messages for the groups that don't get added to the IGMP table 

2022 Jan 27 08:24:12.426659 igmp: [22850] (default-base) PMN filtered IGMP report for group 239.1.1.1

I was supposing that it was the

control-plane policy

so I increased the 

pmn-copp-class-normal-igmp

to a CIR of 10000 from the default of 3000, but I'm still seeing the issue. Anyone familiar with this?

[jon_panes24 · Accepted solution]

The issue was the nbm flow bandwidth was not enough, this caused new IGMP joins to not be allowed.