I've a very simple producer - consumer configuration using UDP unicast over a 10 Gbit connection.
I can achieve around 1100 MB/s using a point to point connection before having packet loss. The producer, an FPGA with custom VHDL, can be configured to send n packets at a time with a specified delay between each packets. And the producer honors 802.3 pause frames when sent by the consumer. I think this is all good.
Now I connect these two devices to a Nexus 3064 switch. These are the only 2 devices connected to the switch. MTU is set to 9000; CDP is disabled; LLDP is disabled. Receive and send Flowcontrol is enabled on both ports being used. Wireshark on the consumer only shows the expected data traffic and ARP packets.
I see less than 600 MB/s using the switch using the same packet count and interpacket delay time that provided 100 MB/s point-point. No packets are lost. The switch is receiving the pause frames from the consumer and is not sending pause frames to the producer, so the switch buffers don't appear to be overflowing. How do I improve performance?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.