05-06-2022 02:04 AM
I have this network configuration :
cisco 7201 router --> Nexus N5k --> ASA5525 --> Host
they are running at 1Gbps speed. I would like to improve the overall performance of the network.
So It came to my mind to higher the MTU size for example.
Makes sense to have jumbo frames over a 1Gbps link? Normally they are used on 10Gpbs one.
What other network improvements should I use as general remarks?
05-06-2022 03:09 AM
Depening on the size of your network, considering you are running over 1 giga link, unless you are facing some performance issue, I dont see what and why you are going to change configuration. Now, if you are running into performance problem, then, I advise you try to track down what is causing.
Do you have any tool to monitor the network?
05-06-2022 03:13 AM
- FYI : https://routerguide.net/jumbo-frame-on-or-off/
M.
05-06-2022 04:54 AM
ASA in path I don't think that ASA support jumbo, and this make ASA frag/defrag Packet with inspection it nightmare.
05-06-2022 10:27 AM
BTW, going from an Ethernet 1500 MTU to a jumbo, might indeed improve throughput, but only usually by a few percent.
If you believe you have a performance issue, you need to first truly identify the "bottleneck" and mitigate it (laugh, unfortunately, this often leads to finding the next bottleneck).
I don't firmly recall the specs on the 7201, but, I recall, it performed like a NPE-G1 or G2, neither of which guarantees gig throughput (the -G# is for PPS, not bps).
I'm unfamiliar with ASA models performance, but FW can often be a throughput bottleneck.
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