As per SONiC CLI requirements, we wanted the collector port to default to 6343 if not explicitly configured. In the Click based CLI, if the collector port is omitted, the port will be set to 6343 by default (https://github.com/Azure/sonic-utilities/blob/master/config/main.py#L2543).
However, if sonic-mgmt-framework based CLI is used, hsflowd was using port 0 as default. host-sflow v2.0.26-4 addresses this issue (i.e. use 6343 in case “collector_port” is not set).
Upgrade hsflowd to v2.0.26-4 to pick up https://github.com/sflow/host-sflow/releases/tag/v2.0.26-4.
Introduce a new "sflow" container (if ENABLE_SFLOW is set). The new docker will include:
hsflowd : host-sflow based daemon is the sFlow agent
psample : Built from libpsample repository. Useful in debugging sampled packets/groups.
sflowtool : Locally dump sflow samples (e.g. with a in-unit collector)
In case of SONiC-VS, enable psample & act_sample kernel modules.
VS' syncd needs iproute2=4.20.0-2~bpo9+1 & libcap2-bin=1:2.25-1 to support tc-sample
tc-syncd is provided as a convenience tool for debugging (e.g. tc-syncd filter show ...)
