Hello. We have a 4507R as our core switch, with a 48 port gig line card installed in it (WS-X4548-GB-RJ45). This card has many servers plugged into it, most running gig speeds. We are seeing Rx-No-Pkt-Buff on a lot of the interfaces, especially after the servers have completed being backed up.
I opened a case with TAC, and it seems as though these errors are being caused due to the fact that the card is over subscribed, and we are pushing too much data through the 8 port groupings at one time. If I enabled flow control on the servers that are plugged into this card, will it improve performance and prevent the errors from showing up?