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VM's across different compute nodes not able to ping with packet size more than 1500

I am running a two compute nodes devstack pod with VXLAN as an overlay protocol. When I am trying to ping VM's on same compute node as well as across different compute nodes with packet size 64 ( or anything less than 1400 ), I am able to successfully ping.

But when I am trying to ping with pakcet size above 1500 : 1. I am able to successfully ping between VM's on same compute nodes. 2. But My ping is unsuccessful when I am trying to ping across different compute nodes.

In my understanding, it could not be an guest OS issue, otherwise I won't be successful on even same compute nodes.

So, is there any specific flag for VXLAN which I have to set to ping across different compute nodes for larger packet sizes ( above 1500 ).

Thanks Prat