def collect_tokens(cfg):
    vlans = cfg.get('vlans', [])
    vlan_names = [v.get('name', '') for v in vlans]
    filter_opts = '<option value="all">All VLANs</option>' + ''.join(
        f'<option value="{n}">{n}</option>' for n in vlan_names
    )
    return {'VLAN_FILTER_OPTIONS': filter_opts}