At a high level, L1 profiles are a set of configurations which allow EOS users to change the numbering scheme and default L1 configurations of all front panel interfaces across their network switch.

For packets received on the front-panel interfaces and delivered to the CPU interface, this feature allows creation of a profile to configure buffer reservations for the egress CPU queues in the MMU (MMU = Memory Management Unit which manages how the on-chip packet buffers are organized).

CPU Profile Mmu EOS 4.29.1F

This article describes how to customize TCAM ( Ternary Content Addressable Memory ) lookup for each feature which uses TCAM.