Mugunthan,
I've tested with two different switches, both are AVB switch.
The results of the udp test are as follows:
- EVM ---> AVB Switch ---> EVM: Bad
- EVM ---> AVB Switch ---> PC: Bad
- PC ---> AVB Switch ---> PC: Good
- PC ---> AVB Switch ---> EVM: Good
Because using a cross cable instead of the AVB Switch had no problem, I've tried to disable AVB function.
I've found that enabling 802.1AS makes the problem.
When I disabled 802.1AS function of the switch, the results were consistently good.
Enabling 802.1AS, there is 802.1AS protocol activities on the network. It looks making a problem.
My PC uses Intel 82574L as the NIC, and it has no problem with enabling 802.1AS.