sonic-buildimage/dockers/docker-teamd/teamd.j2

{
    "device": "{{ pc }}",
    "hwaddr": "{{ hwaddr }}",
    "runner": {
        "name": "lacp",
        "active": true,
{% if PORTCHANNEL[pc]['fallback'] and ((PORTCHANNEL[pc]['members'] | length) == 1) %}
        "fallback": {{ PORTCHANNEL[pc]['fallback'] }},
{% else %}
{# Use 75% links upperbound as min-links #}
        "min_ports": {{ (PORTCHANNEL[pc]['members'] | length * 0.75) | round(0, 'ceil') | int }},
{% endif %}
        "tx_hash": ["eth", "ipv4", "ipv6"]
    },
    "link_watch": {
        "name": "ethtool"
    },
    "ports": {
{% for member in PORTCHANNEL[pc]['members'] %}
        "{{ member }}": {}{% if not loop.last %},{% endif %}

{% endfor %}
    }
}