how to check port traffic usage

[TECH-JEFF]

Hi, there was one time when our service provider told us that the reason why the network is slow and intermittent is because one of our servers is producing almost 900MB of traffic in a specific port in our switch. 

We weren't able to capture or took a screenshot of it but I personally would like to learn if that is a command or how do I check this?

That time, the issue was doing a continuous ping provides you with 5 replies and 5 RTO's, alternately. Is there a Cisco command on that switch. Either the switch is a 3750 L3 switch or 2960-X L2 switch

Thanks

Jeff

[Milos Megis]

Hi,
try command "show interface summary" or for specific interface "show interface fa0/1 summary".

you will see average statistic for "load-interval" what is by default 5 minutes.

you can change it on interface by command "load-interval ...", but remember that if you have running some services which relies on interface statistics, then they could be affected.

Also output of command "show interface fa0/1" can provide similar (more detailed) output of interface statistics.

[TECH-JEFF]

I tried show interface summary and it showed me the list of the interface together with some stats on the right side. 

Interface                                   IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-------------------------------------------------------------------------
  Vlan1                                         0     0      0       0         0         0        0         0       0
* Vlan10                                       0     0      0       0      2000      2    2000      2        0
FastEthernet0                              0     0      0       0         0         0        0        0        0
* GigabitEthernet1/0/1                 0     0      0       0   133000    83  446000   88      0
* GigabitEthernet1/0/2 0 0 0 54802 45000 25 38000 26 0
GigabitEthernet1/0/3 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/4 0 0 0 79 68000 31 7499000 1843 0
* GigabitEthernet1/0/5 0 0 0 643085 232000 82 270000 96 0
* GigabitEthernet1/0/6 0 0 0 107617 53000 31 48000 33 0
* GigabitEthernet1/0/7 0 0 0 295973 39000 22 36000 24 0
* GigabitEthernet1/0/8 0 0 0 51044 164000 97 733000 130 0
GigabitEthernet1/0/9 0 0 0 9333 0 0 0 0 0
GigabitEthernet1/0/10 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/11 0 0 0 2 0 0 0 0 0
GigabitEthernet1/0/12 0 0 0 649 0 0 0 0 0
* GigabitEthernet1/0/13 0 0 0 46896 182000 52 171000 52 0
GigabitEthernet1/0/14 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/15 0 0 0 35298 501000 234 1317000 246 0
* GigabitEthernet1/0/16 0 0 0 238340 249000 74 378000 78 0
GigabitEthernet1/0/17 0 0 0 752 0 0 0 0 0
GigabitEthernet1/0/18 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/19 0 0 0 80 0 0 0 0 0
GigabitEthernet1/0/20 0 0 0 621 0 0 0 0 0
GigabitEthernet1/0/21 0 0 0 700 0 0 0 0 0
GigabitEthernet1/0/22 0 0 0 73 0 0 0 0 0
GigabitEthernet1/0/23 0 0 0 19 0 0 0 0 0
GigabitEthernet1/0/24 0 0 0 8 0 0 0 0 0
* GigabitEthernet1/0/25 0 0 0 46253 17905000 1773 646000 891 0
* GigabitEthernet1/0/26 0 0 0 50237 83000 140 88000 115 0
* GigabitEthernet1/0/27 0 0 0 563508 28000 32 156000 37 0
* GigabitEthernet1/0/28 0 0 0 854404 87000 113 1752000 161 0
* GigabitEthernet1/0/29 0 0 0 92766 97000 134 186000 124 0
GigabitEthernet1/0/30 0 0 0 107 0 0 0 0 0
* GigabitEthernet1/0/31 0 0 0 5767 30000 23 149000 26 0
GigabitEthernet1/0/32 0 0 0 8907 0 0 0 0 0
GigabitEthernet1/0/33 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/34 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/35 0 0 0 1171 3000 2 12000 7 0
GigabitEthernet1/0/36 0 0 0 310 0 0 0 0 0
* GigabitEthernet1/0/37 0 0 0 30968 21000 10 311000 25 0
GigabitEthernet1/0/38 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/39 0 0 0 260 14000 6 102000 14 0
GigabitEthernet1/0/40 0 0 0 4 0 0 0 0 0
* GigabitEthernet1/0/41 0 0 0 103 29000 21 95000 25 0
* GigabitEthernet1/0/42 0 0 0 0 628000 1099 17959000 1909 0
GigabitEthernet1/0/43 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/44 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/45 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/46 0 0 0 58 0 0 0 0 0
* GigabitEthernet1/0/47 0 0 0 17362 31498000 5521 19634000 3736 0
GigabitEthernet1/0/48 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/49 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/50 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/51 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/52 0 0 0 0 0 0 0 0 0

Above is a sample of the output, I just tried to adjust the first 3-4 lines just for analysis. So which part of this is the incoming and outgoing traffic?

Thanks

Jeff

[Milos Megis · Accepted solution]

output of command starts with legend:

*: interface is up
IHQ: pkts in input hold queue
IQD: pkts dropped from input queue
OHQ: pkts in output hold queue
OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)
RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec)
TXPS: tx rate (pkts/sec)
TRTL: throttle count

And of course, statistics are from point of view of interface. RXBS is incoming (receive) and TXBS is outgoing (transmit)

[Joseph W. Doherty]

BTW, in those stats, perhaps of even more use than tx/rx rates, for analysis of performance issues, are the out hold and (especially) drop stats.

[ArpitAshok95872]

Please share the command that will show the output on Cisco 6513 like: 

*: interface is up
IHQ: pkts in input hold queue
IQD: pkts dropped from input queue
OHQ: pkts in output hold queue
OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)
RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec)
TXPS: tx rate (pkts/sec)
TRTL: throttle count