Any input is much appreciated.
Planning to replace my existing iSCSI switches with two 3750E switches. My iSCSN SAN supports jumbo frame (9000 bytes) and so does these two 3750E. I will turn on jumbo frame (9000 bytes) on all ports (except the FE) and two ports that will be configured as routed ports. These two routed ports will use the default 1500 bytes. Questions:
(1) Some of my hosts on these switches will use jumbo frame and some will not. For those that cannot run jumbo frame, will the switches negotiate the MTU back down to the default 1500 byes?
(2) My iSCSI SAn will utilitize the routed ports to replicate itself to another SAN. At the other end of the routed ports, the MTU is 1500 so they do match. Now since the iSCSI SAN will be at 9000 bytes and the routed ports are at 1500 bytes, what will happen? Will I see lots of dropped packets or is this workable at all?
Thank you for any advicse you may have.