SN2000 series max tc rules

Infrastructure & Networking Switches and Gateways
#1

Hi

How many tc rules can you install on an SN2010 using the mlxsw hardware tc offload features?

https://github.com/Mellanox/mlxsw/wiki/ACLs

#2

Hi Joe

About 5600 rules with default settings.

There are two limiting factors:

  1. Size of TCAM

  2. Number of counters

To mitigate the first, use chain templates with only the keys you need:

https://github.com/Mellanox/mlxsw/wiki/ACLs#chain-templates

This will result in each rule occupying less space in the TCAM

To mitigate the second, disable statistics:

https://github.com/Mellanox/mlxsw/wiki/ACLs#suppressing-per-filter-statistics