Cisco Nexus Odd sFlow Implementation

Raymond Burkholder ray at
Mon Mar 20 15:16:37 UTC 2023

On 3/20/23 08:55, Mike Hammett wrote:
> Cisco is sending the in and out packets in their sFlow implementation 
> on their Nexus switches. Obviously, this double counts the information.
> Are there solutions that process those flows and remove one of those 
> directions?

Wouldn't you just do that in your reporting?  The report engine usually 
has options for interface, ingress/egress, prefix range, protocol, ....

Then when you need to aggregate for a specific interface for additional 
troubleshooting, you have all the information for when you need it.

Yes, your aggregate numbers for total packets transiting is double, but 
I generally have specific reports for specific traffic patterns I focus 
on anyway.

Raymond Burkholder
One Unified Net Limited

> -----
> Mike Hammett
> Intelligent Computing Solutions <>
> <><><><>
> Midwest Internet Exchange <>
> <><><>
> The Brothers WISP <>
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