I've an RB4011 connected to an Aruba 6300M by means of an spf+ DAC negotiating at 10Gbps.
Over the weekend, I decided to put some 2.5Gbps NICs into my servers in order to make use of the extra speeds the ports on the 6300M provide. However, I noticed when performing an iperf3 test across VLANs, performance isn't great.
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[ 5] local 10.100.0.81 port 51304 connected to 172.16.11.106 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 65.3 MBytes 548 Mbits/sec 8 355 KBytes
[ 5] 1.00-2.00 sec 63.5 MBytes 533 Mbits/sec 12 383 KBytes
[ 5] 2.00-3.00 sec 64.5 MBytes 541 Mbits/sec 5 294 KBytes
[ 5] 3.00-4.00 sec 63.5 MBytes 533 Mbits/sec 6 331 KBytes
[ 5] 4.00-5.00 sec 64.4 MBytes 541 Mbits/sec 2 363 KBytes
[ 5] 5.00-6.00 sec 64.4 MBytes 540 Mbits/sec 9 276 KBytes
[ 5] 6.00-7.00 sec 65.4 MBytes 549 Mbits/sec 4 320 KBytes
[ 5] 7.00-8.00 sec 65.2 MBytes 547 Mbits/sec 1 355 KBytes
[ 5] 8.00-9.00 sec 65.3 MBytes 548 Mbits/sec 32 269 KBytes
[ 5] 9.00-10.00 sec 64.5 MBytes 541 Mbits/sec 5 307 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 646 MBytes 542 Mbits/sec 84 sender
[ 5] 0.00-10.00 sec 645 MBytes 541 Mbits/sec receiver
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Connecting to host 10.100.0.171, port 5201
[ 5] local 10.100.0.81 port 45380 connected to 10.100.0.171 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 283 MBytes 2.37 Gbits/sec 0 752 KBytes
[ 5] 8.00-9.00 sec 280 MBytes 2.35 Gbits/sec 0 1.13 MBytes
[ 5] 9.00-10.00 sec 280 MBytes 2.35 Gbits/sec 0 1.13 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.73 GBytes 2.35 Gbits/sec 0 sender
[ 5] 0.00-10.00 sec 2.73 GBytes 2.35 Gbits/sec receiver
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[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 93.8 MBytes 787 Mbits/sec 17 294 KBytes
[ 5] 1.00-2.00 sec 92.4 MBytes 775 Mbits/sec 5 396 KBytes
[ 5] 2.00-3.00 sec 92.8 MBytes 778 Mbits/sec 21 373 KBytes
[ 5] 3.00-4.00 sec 92.2 MBytes 773 Mbits/sec 24 362 KBytes
[ 5] 4.00-5.00 sec 92.5 MBytes 776 Mbits/sec 79 348 KBytes
[ 5] 5.00-6.00 sec 93.6 MBytes 785 Mbits/sec 21 337 KBytes
[ 5] 6.00-7.00 sec 94.0 MBytes 788 Mbits/sec 26 329 KBytes
[ 5] 7.00-8.00 sec 93.4 MBytes 783 Mbits/sec 18 318 KBytes
[ 5] 8.00-9.00 sec 92.7 MBytes 778 Mbits/sec 18 296 KBytes
[ 5] 9.00-10.00 sec 94.2 MBytes 790 Mbits/sec 10 318 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 932 MBytes 781 Mbits/sec 239 sender
[ 5] 0.00-10.00 sec 930 MBytes 780 Mbits/sec receiver
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[ 5] 0.00-1.00 sec 116 MBytes 976 Mbits/sec 29 362 KBytes [ 5] 1.00-2.00 sec 120 MBytes 1.01 Gbits/sec 5 305 KBytes
[ 5] 2.00-3.00 sec 120 MBytes 1.01 Gbits/sec 22 331 KBytes [ 5] 3.00-4.00 sec 119 MBytes 999 Mbits/sec 4 342 KBytes
[ 5] 4.00-5.00 sec 119 MBytes 998 Mbits/sec 35 385 KBytes [ 5] 5.00-6.00 sec 119 MBytes 998 Mbits/sec 25 417 KBytes
[ 5] 6.00-7.00 sec 118 MBytes 994 Mbits/sec 9 434 KBytes [ 5] 7.00-8.00 sec 119 MBytes 998 Mbits/sec 6 313 KBytes
[ 5] 8.00-9.00 sec 118 MBytes 993 Mbits/sec 5 344 KBytes [ 5] 9.00-10.00 sec 118 MBytes 990 Mbits/sec 11 383 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.16 GBytes 996 Mbits/sec 151 sender
[ 5] 0.00-10.00 sec 1.16 GBytes 994 Mbits/sec receiver
I'm pretty sure this is a config on my part, I'm just at a loss on where to look.
I should also note that only 2 ports are connected on the RB4011. ether1 is for ISP (PPPoE) and the sfpplus port. Everything else connects to the switch.