Configuring and Displaying Statistics

You can display standard statistics that consist of flow-based information collected and tracked continuously by the switch. To modify statistics logging, use the stats-log-modify command and disable or enable statistical logging as well as change the interval, in seconds, between statistical events.

To show connection-level statistics, traffic flows between a pair of hosts for an application service, including current connections and all connections since the creation of the fabric, enter the following CLI command at the prompt:

CLI (network-admin@Leaf1) > connection-stats-show

switch:        pubdev02   

count:         0

mac:           64:0e:94:28:00:8e

vlan:          3

ip:            192.168.42.10

port:          25

iconns:        6

oconns:        0

ibytes:        224K

obytes:        10.5K

total-bytes:   235K

first-seen:    02-26,17:19:52

last-seen:     02-26,17:19:57

last-seen-ago: 17d14h6m5s

switch:        pubdev02

count:         0

mac:           64:0e:94:28:03:56

vlan:          3

ip:            192.168.42.30

port:          128

iconns:        0

oconns:        3946878

ibytes:        4.50M

obytes:        13.5M

total-bytes:   18.0M

first-seen:    01-06,09:23:07

last-seen:     08:25:20

last-seen-ago: 42s

REST API Command :   GET http://<switch-ip>/vRest/connection-stats

From the information displayed in the output, you can see statistics for each switch, VLANs, client and server IP addresses, as well as the services on each connection. Latency and other information is also displayed.

The latency (us) column displays the running latency measurement for the TCP connection in microseconds. It indicates end-to-end Round-Trip-Time (RTT) between TCP/IP session client and server and includes the protocol stack processing for the connected hosts and all intermediary network hops.

To display connection latency, use the connection-latency-show command:

CLI (network-admin@Leaf1) > connection-latency-show

switch   min    max    num-conns percent avg-dur obytes ibytes total-bytes

-------- ------ ------ --------- ------- ------- ------ ------ -----------

switch-v 0.00ns 20.0us 67.5K     76%     17.12m  32.9K  18.0K  51.0K       

switch-v 20.0us 40.0us 2.74K     3%      1.64h   8.77M  123M   132M        

switch-v 40.0us 60.0us 10.4K     11%     1.40h   22.0M  403M   425M        

switch-v 60.0us 80.0us 1.85K     2%      1.10h   8.16M  127M   135M        

switch-v 80.0us 100us  901       1%      1.02h   3.39M  53.5M  56.9M       

switch-v 100us  120us  1.35K     1%      1.23h   5.49M  126M   132M        

switch-v 120us  140us  801       0%      1.06h   5.67M  39.2M  44.9M       

switch-v 140us  160us  545       0%      1.19h   1.88M  29.4M  31.3M       

switch-v 160us  180us  1.08K     1%      1.21h   5.04M  82.8M  87.8M       

switch-v 180us  200us  583       0%      56.77m  5.15M  72.7M  77.8M       

switch-v 200us         729       0%      48.51m  2.57G  184M   2.75G

REST API Command :  GET http://<switch-ip>/vRes/connection-latencies