View interface max utilization?

[tylerlucas]

We have a single point to point T1 going from head-end to a remote office.

Voice traffic goes over this connection.

Occasionally, users report voice issues.  When checking NetFlow and SNMP logs, though, utilization is averaging 15-20%.  When a call hits their main line, it rings 30+ phones, and we think this may actually be spiking the T1 and pegging it for a brief moment.

Is there any way to verify if the T1 ever hit max utilization? Should I be looking for dropped traffic? What's the best way to identify whether or not this is happening?

[Sonal Singh · Accepted solution]

Hi,

when the calls are high , check show interface for the T1 and see the drops.

Like output drops , overruns and check how much traffic is hitting the interface .

when the call are high , do the following to analyze traffic:

1. Clear the counters by command "clear counter"
2.Change the load interval to 30 by command "load-interval 30"
3. Capture Show interfaces and show controllers for the interface(5 times in interval of 5 minutes) , when the
calls are high

Regards,

Sonal