troubleshooting Question

Cisco Interface Saturation - Top Talker Script Interpretation

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cpatte7372Flag for United Kingdom of Great Britain and Northern Ireland asked on
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Hello Community,
We've been experiencing high utilisation on our interface, to the point where the rx is full saturated, see below:
ukxxxx-rm01-xx#show int atM 0/1/0
ATM0/1/0 is up, line protocol is up
  Hardware is MPC ATMSAR, address is 6073.5cd8.95a6 (bia 6073.5cd8.95a6)
  Description: Internet Connection
  MTU 1600 bytes, sub MTU 1600, BW 448 Kbit/sec, DLY 820 usec,
     reliability 255/255, txload 137/255, rxload 255/255
I decided to apply the attached script to determine what might be causing the saturation. I have also attached an explanation of how the script works.
Can someone please help me interpet the output?
The culprit is the source ip 194.75.x.x to 80.229.x.x with prot ESP and AvgBits/s 1.19M and AVGpkt/s 175.
I don't know how to interpret the results...
Any explanation would greatly appreciated.
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