---
title: "High Capacity Counters"
canonical: "https://help.peakhourapp.com/space/P5W/9503413/High%20Capacity%20Counters"
format: markdown
---
## What are High Capacity Counters?

Since the advent of faster and faster network interfaces, SNMP's original use of 32 bits for counters has become somewhat outdated. As a counter of network throughput in bytes, a 32bit counter can only count up to approximately **4GB** before rolling back to zero. On a very fast interface, the counter may reset before it can be read again.

High Capacity Counters are designed to solve this issue by increasing counters from 32-bit (maximum of 4,294,967,295 bytes) to 64-bit (maximum of 9,223,372,036,854,775,807 bytes).

## How does PeakHour use them?

If PeakHour detects that your router supports High Capacity (64-bit) counters, it will automatically use them to measure throughput. This will result in more accurate usage while your Mac is asleep or switched off.

 PeakHour will indicate if it has detected 64-bit counters in the Bandwidth Monitor Summary section under Monitors > Target:

| **High Capacity Counters Detected?** |
| --- |
| Yes | ![image](media://fcfc911a-093b-45fa-84fc-661b266ed2fc) |
| No | ![image](media://8e7e84e6-0180-4416-8781-43acc94dfa97) |

For more information on High Capacity Counters, see the 2nd question of this FAQ: 

[http://www.cisco.com/en/US/tech/tk648/tk362/technologies_q_and_a_item09186a00800b69ac.shtml](http://www.cisco.com/en/US/tech/tk648/tk362/technologies_q_and_a_item09186a00800b69ac.shtml)