Per-interface ingress shared buffer pool allocation

You can tune the buffer allocated to each priority group or interface based on the dynamic threshold value (also referred to as the alpha value).

You can set the ingress dynamic-threshold value on a global basis at the [edit class-of-service shared-buffer ingress buffer-partition (lossless , lossless-headroom , lossy)] hierarchy level. A global alpha value is useful in certain cases, but it is not effective when the switch has ports operating at different speeds.

For switches with ports of different speeds, you can define a dynamic threshold profile with an alpha value for each priority group and then associate the profile with an ingress interface. This configuration enables interface-specific dynamic threshold values.

To enable per-interface dynamic threshold values, define a dynamic threshold profile at the [edit class-of-service] hierarchy level. For example: [set class-of-service dynamic-threshold-profile profile-name ingress priority-group PG-number dynamic-threshold threshold-value].

Then assign the dynamic threshold profile to an ingress interface. For example: [set class-of-service interfaces interface-name dynamic-threshold-profile profile-name].

An interface-specific dynamic threshold value overrides a defined global dynamic threshold value or the default dynamic threshold value.