I have a question regarding the usage of VeryBig buffers (1525 - 4520 bytes).
2970 ----Cat5e 1Gbps---- 3550 ----GigaStack 1Gbps---- 3550
See Visio attachment.
On both the 3550 switches I receive a high amount of Very Big buffer misses (25%). The 2970 shows no very big buffer misses and even no very big buffer usage at all.
The switches are not configured to handle frames larger than 1500 bytes neither are the servers, so there should be no usage of Jumbo packets. Why are the very big buffers used then?
Is there a tool to measure which ports receive a certain size of packets?