If you are talking about CRC at the end then yes, I will be recalculating it. Other checksums that are there in IPv4 header etc, i won't recalculate them. Actually the device will be encrypting the incoming stream at layer 2. So, it doesn't matter if I recalculate the internal checksums. But it does matter if I don't recalculate the CRC at the end of the packet because otherwise the packet will be dropped by the router flagged as incorrect CRC.
My blackbox works under all kinds of traffic so MSS is irrelevant here. Kindly clarify one thing if you can, if I set MTU to 1460, will it be only on the transmitting end or my receive packet size will also be 1460? Because, if my blackbox is adding let's say 4bytes on every packet,
1460 (side A )--> blackbox --> 1464 (side B),
1464 (side B)--> blackbox --> 1460 (side A)
the receiving unit in this case will also be configured at 1460, right ? or it will still be at 1500MTU?
Like take the case when my blackbox is adding 4Bytes on every packet coming in from one side and removing 4Bytes the other way.
So if I set 1460 MTU on side A transmission, will my side a reception be 1460 too? or will it still be 1500?
also, will router on side B automatically change itself to 1460 or will it still be on 1500 MTU ?
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...