Hello - I need some help with fine tuning FCIP between MDS switch to MDS switch.
We have 2 x cisco MDS 9222i ("4x1GE IPS, 18x1/2/4Gbps FC/Sup2") one at production other at DR.
Both datacentres are connected with dedicated point-to-point with 10 Gbps fibre link. Right now only 5 Gbps bandwidth available.
System version: 5.0(1a)
Ran this command ips measure-rtt x.x.x.x int gigabitethernet 1/3
Round trip time is 12365 micro seconds (12.37 milli seconds)
I have updated following FCIP settings but still not getting over 13 MB/s. Only Single 1 GE is in use right now for performace throughput testing.
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Interface Input (rate is 1 min avg) Output (rate is 1 min avg)
------------------------- -----------------------------
Rate Total Rate Total
MB/s Frames MB/s Frames
-------------------------------------------------------------------------------
GigabitEthernet1/3 0 785759219 13 1446349850
FCIP Profile 3
Tunnels Using this Profile: fcip4
Listen Port is 3225
TCP parameters
SACK is enabled
PMTU discovery is enabled, reset timeout is 3600 sec
Keep alive is 60 sec
Minimum retransmission timeout is 200 ms
Maximum number of re-transmissions is 4
Send buffer size is 2000 KB
Maximum allowed bandwidth is 1000000 kbps
Minimum available bandwidth is 1000000 kbps
Configured round trip time is 20000 usec
Congestion window monitoring is enabled, burst size is 50 KB
Auto jitter detection is enabled
IP Compression is disabled
TCP Parameters
Path MTU 9216 bytes
Current retransmission timeout is 200 ms
Round trip time: Smoothed 16 ms, Variance: 1 Jitter: 183 us
Advertized window: Current: 1462 KB, Maximum: 24580 KB, Scale: 10
Peer receive window: Current: 1429 KB, Maximum: 1429 KB, Scale: 10
Congestion window: Current: 1286 KB, Slow start threshold: 6925 KB
Current Send Buffer Size: 3434 KB, Requested Send Buffer Size: 2000 KB
CWM Burst Size: 50 KB
Measured RTT : 12306 us Min RTT: 12306 us Max RTT: 12734 us
5 minutes input rate 626408 bits/sec, 78301 bytes/sec, 869 frames/sec
5 minutes output rate 118285184 bits/sec, 14785648 bytes/sec, 7807 frames/sec
92617362 frames input, 8353738592 bytes
1207649 Class F frames input, 117198804 bytes
91409713 Class 2/3 frames input, 8236539788 bytes
0 Reass frames
0 Error frames timestamp error 0
1382952749 frames output, 2676072676760 bytes
1207808 Class F frames output, 161161800 bytes
1381744941 Class 2/3 frames output, 2675911514960 bytes
0 Error frames
GigabitEthernet1/3 is up
MTU 9216 bytes
Port mode is IPS
Speed is 1 Gbps
Beacon is turned off
Auto-Negotiation is turned on
Thanks
Sultan
