はじめに
SONiCはホワイトボックススイッチのOSSのネットワーキングOSです。SONiCがOSSコミュニティにて開発されている関係上、公開されているドキュメントが不十分なケースがあります。今回の記事では、ドキュメントではなくSONiCに組み込まれているYANGからSONiCに設定可能なパラメータを把握する手段をご紹介いたします。
SONiCの設定の変更方法
SONiCの設定変更用のCLIのコマンドレファレンスは以下に公開されています。
https://github.com/Azure/sonic-utilities/blob/master/doc/Command-Reference.md
ただし、コマンドレファレンスは更新が漏れている可能性もありますし、SONiCの設定パラメータの中でSONiC CLIによる変更がサポートされていないものも存在します。SONiCの設定情報はconfig_db.jsonというjsonファイルにて管理されています(こちらの例を参照ください)。CLIによって変更できないパラメータは、config_db.jsonを直接編集してSONiCに反映させることが可能です。config_db.jsonにて設定可能なパラメータは以下にて説明されています。
https://github.com/Azure/sonic-swss/blob/master/doc/Configuration.md
ただし、このドキュメントはconfig_db.jsonのサンプルを示していますが、各パラメータに設定可能な値の定義は説明していません。例えば、Device Metadataは以下のサンプルが掲載されています。
{
"DEVICE_METADATA": {
"localhost": {
"hwsku": "Force10-S6100",
"default_bgp_status": "up",
"docker_routing_config_mode": "unified",
"hostname": "sonic-s6100-01",
"platform": "x86_64-dell_s6100_c2538-r0",
"mac": "4c:76:25:f4:70:82",
"default_pfcwd_status": "disable",
"bgp_asn": "65100",
"deployment_id": "1",
"type": "ToRRouter",
"buffer_model": "traditional"
}
}
}
この中で、例えばdocker_routing_config_modeにunifiedを設定できることは分かりますが、それ以外に何の値を設定できるのか分かりません。ですが、SONiC YANGを参照すれば、それらの定義を把握することができます。
SONiC YANGとは
SONiCコミュニティでは、201911ブランチからManagement Frameworkを開発し始めています。こちらでHLD(基本設計)が公開されています。このManagement Frameworkにて以下の仕組みが導入されています。
・OpenConfigの標準YANG、あるいはカスタマイズYANGから、設定用のRest API、CLIを自動で生成
・gNMIによる制御
・Config Validation (設定パラメータの妥当性チェック)
この中で、最後のConfig Validationは、config_db.jsonに登録するデータについて値のチェックを行います。このデータのチェックのルールを書き出したものが以下のSONiC YANGです。
https://github.com/Azure/sonic-buildimage/tree/master/src/sonic-yang-models/yang-models
このSONiC YANGは、こちらのSONiC YANG MODEL GUIDELINESに従って定義されています。このSONiC YANGを使ってSONiCはConfig Validationを実行しています。つまり、このSONiC YANGはプログラムの一部になりますので、SONiCの仕様を知るのに信頼性の高い情報と言えます。
SONiC YANGから設定可能なパラメータの確認方法
具体的にSONiC YANGの定義を確認します。今回は202106ブランチのこちらののコミットで確認しています。sonic-device_metadata.yangを例として示します。
module sonic-device_metadata {
yang-version 1.1;
namespace "http://github.com/Azure/sonic-device_metadata";
prefix device_metadata;
import ietf-yang-types {
prefix yang;
}
import ietf-inet-types {
prefix inet;
}
import sonic-types {
prefix stypes;
revision-date 2019-07-01;
}
description "DEVICE_METADATA YANG Module for SONiC OS";
revision 2021-02-27 {
description "Added frr_mgmt_framework_config field to handle BGP
config DB schema events to configure FRR protocols.";
}
revision 2020-04-10 {
description "First Revision";
}
container sonic-device_metadata {
container DEVICE_METADATA {
description "DEVICE_METADATA part of config_db.json";
container localhost{
leaf hwsku {
type stypes:hwsku;
}
leaf default_bgp_status {
type enumeration {
enum up;
enum down;
}
default up;
}
leaf docker_routing_config_mode {
type string {
pattern "unified|split|separated";
}
default "unified";
}
leaf hostname {
type string {
length 1..255;
}
}
leaf platform {
type string {
length 1..255;
}
}
leaf mac {
type yang:mac-address;
}
leaf default_pfcwd_status {
type enumeration {
enum disable;
enum enable;
}
default disable;
}
leaf bgp_asn {
type inet:as-number;
}
leaf deployment_id {
type uint32;
}
leaf type {
type string {
length 1..255;
pattern "ToRRouter|LeafRouter|SpineChassisFrontendRouter|ChassisBackendRouter|ASIC";
}
}
leaf buffer_model {
description "This leaf is added for dynamic buffer calculation.
The dynamic model represents the model in which the buffer configurations,
like the headroom sizes and buffer pool sizes, are dynamically calculated based
on the ports' speed, cable length, and MTU. This model is used by Mellanox so far.
The traditional model represents the model in which all the buffer configurations
are statically configured in CONFIG_DB tables. This is the default model used by all other vendors";
type string {
pattern "dynamic|traditional";
}
}
leaf frr_mgmt_framework_config {
type boolean;
description "FRR configurations are handled by sonic-frr-mgmt-framework module when set to true,
otherwise, sonic-bgpcfgd handles the FRR configurations based on the predefined templates.";
default "false";
}
}
/* end of container localhost */
}
/* end of container DEVICE_METADATA */
}
/* end of top level container */
}
/* end of module sonic-device_metadata */
例えば、docker_routing_config_modeの以下のYANGの定義を見ると、パラメータは文字列(string)であり、設定可能な文字列はunified、split、separatedの3種類であり、明示的な値が設定されない場合は初期値としてunifiedが設定されることが分かります。
leaf docker_routing_config_mode {
type string {
pattern "unified|split|separated";
}
default "unified";
}
まとめ
以上、SONiC YANGからSONiCの設定情報のパラメータを把握する方法を紹介いたしました。今回ご紹介したように、YANGにてデータモデルを定義することで、ソフトウェア開発の効率を上げながら、同時に仕様を正確に把握できる環境が作られています。
最後に補足ですが、pyangを使って、YANGの定義をツリーに表示させることができます。SONiC YANG全体にpyangのtree表示をした結果を、ご参考までに以下に示します。
$ pyang -f tree *.yang
module: sonic-acl
+--rw sonic-acl
+--rw ACL_RULE
| +--rw ACL_RULE_LIST* [ACL_TABLE_NAME RULE_NAME]
| +--rw ACL_TABLE_NAME -> /sonic-acl/ACL_TABLE/ACL_TABLE_LIST/ACL_TABLE_NAME
| +--rw RULE_NAME string
| +--rw PACKET_ACTION stypes:packet_action
| +--rw IP_TYPE stypes:ip_type
| +--rw PRIORITY uint32
| +--rw (ip_prefix)
| | +--:(ip4_prefix)
| | | +--rw SRC_IP inet:ipv4-prefix
| | | +--rw DST_IP inet:ipv4-prefix
| | +--:(ip6_prefix)
| | +--rw SRC_IPV6 inet:ipv6-prefix
| | +--rw DST_IPV6 inet:ipv6-prefix
| +--rw IN_PORTS* uint16
| +--rw OUT_PORTS* uint16
| +--rw (src_port)
| | +--:(l4_src_port)
| | | +--rw L4_SRC_PORT uint16
| | +--:(l4_src_port_range)
| | +--rw L4_SRC_PORT_RANGE string
| +--rw (dst_port)
| | +--:(l4_dst_port)
| | | +--rw L4_DST_PORT uint16
| | +--:(l4_dst_port_range)
| | +--rw L4_DST_PORT_RANGE string
| +--rw ETHER_TYPE string
| +--rw IP_PROTOCOL uint8
| +--rw TCP_FLAGS string
| +--rw DSCP uint8
| +--rw TC uint8
| +--rw (icmp)
| | +--:(icmp4)
| | | +--rw ICMP_TYPE uint8
| | | +--rw ICMP_CODE uint8
| | +--:(icmp6)
| | +--rw ICMPV6_TYPE uint8
| | +--rw ICMPV6_CODE uint8
| +--rw INNER_ETHER_TYPE string
| +--rw INNER_IP_PROTOCOL uint8
| +--rw INNER_L4_SRC_PORT uint16
| +--rw INNER_L4_DST_PORT uint16
+--rw ACL_TABLE
+--rw ACL_TABLE_LIST* [ACL_TABLE_NAME]
+--rw ACL_TABLE_NAME string
+--rw policy_desc string
+--rw type stypes:acl_table_type
+--rw stage string
+--rw services* string
+--rw ports* union
module: sonic-bgp-global
+--rw sonic-bgp-global
+--rw BGP_GLOBALS
| +--rw BGP_GLOBALS_LIST* [vrf_name]
| +--rw vrf_name union
| +--rw router_id inet:ipv4-address
| +--rw local_asn uint32
| +--rw always_compare_med boolean
| +--rw load_balance_mp_relax boolean
| +--rw graceful_restart_enable boolean
| +--rw gr_preserve_fw_state boolean
| +--rw gr_restart_time uint16
| +--rw gr_stale_routes_time uint16
| +--rw external_compare_router_id boolean
| +--rw ignore_as_path_length boolean
| +--rw log_nbr_state_changes boolean
| +--rw rr_cluster_id string
| +--rw rr_allow_out_policy boolean
| +--rw disable_ebgp_connected_rt_check boolean
| +--rw fast_external_failover boolean
| +--rw network_import_check boolean
| +--rw graceful_shutdown boolean
| +--rw rr_clnt_to_clnt_reflection boolean
| +--rw max_dynamic_neighbors uint16
| +--rw read_quanta uint8
| +--rw write_quanta uint8
| +--rw coalesce_time uint32
| +--rw route_map_process_delay uint16
| +--rw deterministic_med boolean
| +--rw med_confed boolean
| +--rw med_missing_as_worst boolean
| +--rw compare_confed_as_path boolean
| +--rw as_path_mp_as_set boolean
| +--rw default_ipv4_unicast boolean
| +--rw default_local_preference uint32
| +--rw default_show_hostname boolean
| +--rw default_shutdown boolean
| +--rw default_subgroup_pkt_queue_max uint8
| +--rw max_med_time uint32
| +--rw max_med_val uint32
| +--rw max_med_admin boolean
| +--rw max_med_admin_val uint32
| +--rw max_delay uint16
| +--rw establish_wait uint16
| +--rw confed_id uint32
| +--rw confed_peers* uint32
| +--rw keepalive uint16
| +--rw holdtime uint16
+--rw BGP_GLOBALS_AF
| +--rw BGP_GLOBALS_AF_LIST* [vrf_name afi_safi]
| +--rw vrf_name -> ../../../BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
| +--rw afi_safi string
| +--rw max_ebgp_paths uint16
| +--rw max_ibgp_paths uint16
| +--rw import_vrf union
| +--rw import_vrf_route_map -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw route_download_filter -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw ebgp_route_distance uint8
| +--rw ibgp_route_distance uint8
| +--rw local_route_distance uint8
| +--rw ibgp_equal_cluster_length boolean
| +--rw route_flap_dampen boolean
| +--rw route_flap_dampen_half_life uint8
| +--rw route_flap_dampen_reuse_threshold uint16
| +--rw route_flap_dampen_suppress_threshold uint16
| +--rw route_flap_dampen_max_suppress uint8
+--rw BGP_GLOBALS_AF_AGGREGATE_ADDR
| +--rw BGP_GLOBALS_AF_AGGREGATE_ADDR_LIST* [vrf_name afi_safi ip_prefix]
| +--rw vrf_name -> ../../../BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
| +--rw afi_safi string
| +--rw ip_prefix inet:ip-prefix
| +--rw as_set boolean
| +--rw summary_only boolean
| +--rw policy -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw BGP_GLOBALS_AF_NETWORK
+--rw BGP_GLOBALS_AF_NETWORK_LIST* [vrf_name afi_safi ip_prefix]
+--rw vrf_name -> ../../../BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
+--rw afi_safi string
+--rw ip_prefix inet:ip-prefix
+--rw policy -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw backdoor boolean
module: sonic-bgp-neighbor
+--rw sonic-bgp-neighbor
+--rw BGP_NEIGHBOR
| +--rw BGP_NEIGHBOR_LIST* [vrf_name neighbor]
| +--rw vrf_name -> /bgpg:sonic-bgp-global/BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
| +--rw neighbor union
| +--rw peer_group_name -> /bgppg:sonic-bgp-peergroup/BGP_PEER_GROUP/BGP_PEER_GROUP_LIST[bgppg:vrf_name=current()/../vrf_name]/peer_group_name
| +--rw local_asn uint32
| +--rw name string
| +--rw asn uint32
| +--rw peer_type bgp_peer_type
| +--rw ebgp_multihop boolean
| +--rw ebgp_multihop_ttl uint8
| +--rw auth_password string
| +--rw keepalive uint16
| +--rw holdtime uint16
| +--rw conn_retry uint16
| +--rw min_adv_interval uint16
| +--rw local_addr union
| +--rw passive_mode boolean
| +--rw capability_ext_nexthop boolean
| +--rw disable_ebgp_connected_route_check boolean
| +--rw enforce_first_as boolean
| +--rw solo_peer boolean
| +--rw ttl_security_hops uint8
| +--rw bfd boolean
| +--rw bfd_check_ctrl_plane_failure boolean
| +--rw capability_dynamic boolean
| +--rw dont_negotiate_capability boolean
| +--rw enforce_multihop boolean
| +--rw override_capability boolean
| +--rw peer_port uint16
| +--rw shutdown_message string
| +--rw strict_capability_match boolean
| +--rw admin_status boolean
| +--rw local_as_no_prepend boolean
| +--rw local_as_replace_as boolean
+--rw BGP_NEIGHBOR_AF
+--rw BGP_NEIGHBOR_AF_LIST* [vrf_name neighbor afi_safi]
+--rw vrf_name -> /bgpg:sonic-bgp-global/BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
+--rw neighbor -> ../../../BGP_NEIGHBOR/BGP_NEIGHBOR_LIST[vrf_name=current()/../vrf_name]/neighbor
+--rw afi_safi string
+--rw admin_status boolean
+--rw send_default_route boolean
+--rw default_rmap -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw max_prefix_limit uint32
+--rw max_prefix_warning_only boolean
+--rw max_prefix_warning_threshold uint8
+--rw max_prefix_restart_interval uint16
+--rw route_map_in* -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw route_map_out* -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw soft_reconfiguration_in boolean
+--rw unsuppress_map_name -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw rrclient boolean
+--rw weight uint16
+--rw as_override boolean
+--rw send_community bgp_community_type
+--rw tx_add_paths bgp_tx_add_paths_type
+--rw unchanged_as_path boolean
+--rw unchanged_med boolean
+--rw unchanged_nexthop boolean
+--rw filter_list_in -> /rpolsets:sonic-routing-policy-sets/AS_PATH_SET/AS_PATH_SET_LIST/name
+--rw filter_list_out -> /rpolsets:sonic-routing-policy-sets/AS_PATH_SET/AS_PATH_SET_LIST/name
+--rw nhself boolean
+--rw nexthop_self_force boolean
+--rw prefix_list_in -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
+--rw prefix_list_out -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
+--rw remove_private_as_enabled boolean
+--rw replace_private_as boolean
+--rw remove_private_as_all boolean
+--rw allow_as_in boolean
+--rw allow_as_count uint8
+--rw allow_as_origin boolean
+--rw cap_orf sonic_bgp_orf
+--rw route_server_client boolean
module: sonic-bgp-peergroup
+--rw sonic-bgp-peergroup
+--rw BGP_PEER_GROUP
| +--rw BGP_PEER_GROUP_LIST* [vrf_name peer_group_name]
| +--rw vrf_name -> /bgpg:sonic-bgp-global/BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
| +--rw peer_group_name string
| +--rw local_asn uint32
| +--rw name string
| +--rw asn uint32
| +--rw peer_type bgp_peer_type
| +--rw ebgp_multihop boolean
| +--rw ebgp_multihop_ttl uint8
| +--rw auth_password string
| +--rw keepalive uint16
| +--rw holdtime uint16
| +--rw conn_retry uint16
| +--rw min_adv_interval uint16
| +--rw local_addr union
| +--rw passive_mode boolean
| +--rw capability_ext_nexthop boolean
| +--rw disable_ebgp_connected_route_check boolean
| +--rw enforce_first_as boolean
| +--rw solo_peer boolean
| +--rw ttl_security_hops uint8
| +--rw bfd boolean
| +--rw bfd_check_ctrl_plane_failure boolean
| +--rw capability_dynamic boolean
| +--rw dont_negotiate_capability boolean
| +--rw enforce_multihop boolean
| +--rw override_capability boolean
| +--rw peer_port uint16
| +--rw shutdown_message string
| +--rw strict_capability_match boolean
| +--rw admin_status boolean
| +--rw local_as_no_prepend boolean
| +--rw local_as_replace_as boolean
+--rw BGP_PEER_GROUP_AF
| +--rw BGP_PEER_GROUP_AF_LIST* [vrf_name peer_group_name afi_safi]
| +--rw vrf_name -> /bgpg:sonic-bgp-global/BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
| +--rw peer_group_name -> ../../../BGP_PEER_GROUP/BGP_PEER_GROUP_LIST[vrf_name=current()/../vrf_name]/peer_group_name
| +--rw afi_safi string
| +--rw admin_status boolean
| +--rw send_default_route boolean
| +--rw default_rmap -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw max_prefix_limit uint32
| +--rw max_prefix_warning_only boolean
| +--rw max_prefix_warning_threshold uint8
| +--rw max_prefix_restart_interval uint16
| +--rw route_map_in* -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw route_map_out* -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw soft_reconfiguration_in boolean
| +--rw unsuppress_map_name -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
| +--rw rrclient boolean
| +--rw weight uint16
| +--rw as_override boolean
| +--rw send_community bgp_community_type
| +--rw tx_add_paths bgp_tx_add_paths_type
| +--rw unchanged_as_path boolean
| +--rw unchanged_med boolean
| +--rw unchanged_nexthop boolean
| +--rw filter_list_in -> /rpolsets:sonic-routing-policy-sets/AS_PATH_SET/AS_PATH_SET_LIST/name
| +--rw filter_list_out -> /rpolsets:sonic-routing-policy-sets/AS_PATH_SET/AS_PATH_SET_LIST/name
| +--rw nhself boolean
| +--rw nexthop_self_force boolean
| +--rw prefix_list_in -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
| +--rw prefix_list_out -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
| +--rw remove_private_as_enabled boolean
| +--rw replace_private_as boolean
| +--rw remove_private_as_all boolean
| +--rw allow_as_in boolean
| +--rw allow_as_count uint8
| +--rw allow_as_origin boolean
| +--rw cap_orf sonic_bgp_orf
| +--rw route_server_client boolean
+--rw BGP_GLOBALS_LISTEN_PREFIX
+--rw BGP_GLOBALS_LISTEN_PREFIX_LIST* [vrf_name ip_prefix]
+--rw vrf_name -> /bgpg:sonic-bgp-global/BGP_GLOBALS/BGP_GLOBALS_LIST/vrf_name
+--rw ip_prefix inet:ip-prefix
+--rw peer_group -> ../../../BGP_PEER_GROUP/BGP_PEER_GROUP_LIST[vrf_name=current()/../vrf_name]/peer_group_name
module: sonic-breakout_cfg
+--rw sonic-breakout_cfg
+--rw BREAKOUT_CFG
+--rw BREAKOUT_CFG_LIST* [port]
+--rw port string
+--rw brkout_mode string
module: sonic-copp
+--rw sonic-copp
+--rw COPP_GROUP
| +--rw COPP_GROUP_LIST* [name]
| +--rw name string
| +--rw queue uint32
| +--rw trap_priority uint32
| +--rw trap_action stypes:copp_packet_action
| +--rw meter_type stypes:meter_type
| +--rw mode enumeration
| +--rw color enumeration
| +--rw cir uint64
| +--rw cbs uint64
| +--rw pir uint64
| +--rw pbs uint64
| +--rw green_action stypes:copp_packet_action
| +--rw yellow_action stypes:copp_packet_action
| +--rw red_action stypes:copp_packet_action
+--rw COPP_TRAP
+--rw COPP_TRAP_LIST* [name]
+--rw name string
+--rw trap_ids string
+--rw trap_group -> /sonic-copp/COPP_GROUP/COPP_GROUP_LIST/name
rpcs:
+---x get-match-protocols
+--ro output
+--ro Match_protocols* [Protocol]
+--ro Protocol string
module: sonic-crm
+--rw sonic-crm
+--rw CRM
+--rw Config
+--rw acl_counter_threshold_type stypes:crm_threshold_type
+--rw acl_counter_high_threshold threshold
+--rw acl_counter_low_threshold threshold
+--rw acl_group_threshold_type stypes:crm_threshold_type
+--rw acl_group_high_threshold threshold
+--rw acl_group_low_threshold threshold
+--rw acl_entry_threshold_type stypes:crm_threshold_type
+--rw acl_entry_high_threshold threshold
+--rw acl_entry_low_threshold threshold
+--rw acl_table_threshold_type stypes:crm_threshold_type
+--rw acl_table_high_threshold threshold
+--rw acl_table_low_threshold threshold
+--rw fdb_entry_threshold_type stypes:crm_threshold_type
+--rw fdb_entry_high_threshold threshold
+--rw fdb_entry_low_threshold threshold
+--rw ipv4_neighbor_threshold_type stypes:crm_threshold_type
+--rw ipv4_neighbor_high_threshold threshold
+--rw ipv4_neighbor_low_threshold threshold
+--rw ipv4_nexthop_threshold_type stypes:crm_threshold_type
+--rw ipv4_nexthop_high_threshold threshold
+--rw ipv4_nexthop_low_threshold threshold
+--rw ipv4_route_threshold_type stypes:crm_threshold_type
+--rw ipv4_route_high_threshold threshold
+--rw ipv4_route_low_threshold threshold
+--rw ipv6_neighbor_threshold_type stypes:crm_threshold_type
+--rw ipv6_neighbor_high_threshold threshold
+--rw ipv6_neighbor_low_threshold threshold
+--rw ipv6_nexthop_threshold_type stypes:crm_threshold_type
+--rw ipv6_nexthop_high_threshold threshold
+--rw ipv6_nexthop_low_threshold threshold
+--rw ipv6_route_threshold_type stypes:crm_threshold_type
+--rw ipv6_route_high_threshold threshold
+--rw ipv6_route_low_threshold threshold
+--rw nexthop_group_threshold_type stypes:crm_threshold_type
+--rw nexthop_group_high_threshold threshold
+--rw nexthop_group_low_threshold threshold
+--rw nexthop_group_member_threshold_type stypes:crm_threshold_type
+--rw nexthop_group_member_high_threshold threshold
+--rw nexthop_group_member_low_threshold threshold
+--rw polling_interval threshold
+--rw dnat_entry_threshold_type stypes:crm_threshold_type
+--rw dnat_entry_high_threshold threshold
+--rw dnat_entry_low_threshold threshold
+--rw snat_entry_threshold_type stypes:crm_threshold_type
+--rw snat_entry_high_threshold threshold
+--rw snat_entry_low_threshold threshold
+--rw ipmc_entry_threshold_type stypes:crm_threshold_type
+--rw ipmc_entry_high_threshold threshold
+--rw ipmc_entry_low_threshold threshold
+--rw mpls_inseg_threshold_type stypes:crm_threshold_type
+--rw mpls_inseg_high_threshold threshold
+--rw mpls_inseg_low_threshold threshold
+--rw mpls_nexthop_threshold_type stypes:crm_threshold_type
+--rw mpls_nexthop_high_threshold threshold
+--rw mpls_nexthop_low_threshold threshold
module: sonic-device_metadata
+--rw sonic-device_metadata
+--rw DEVICE_METADATA
+--rw localhost
+--rw hwsku stypes:hwsku
+--rw default_bgp_status enumeration
+--rw docker_routing_config_mode string
+--rw hostname string
+--rw platform string
+--rw mac yang:mac-address
+--rw default_pfcwd_status enumeration
+--rw bgp_asn inet:as-number
+--rw deployment_id uint32
+--rw type string
+--rw buffer_model string
+--rw frr_mgmt_framework_config boolean
module: sonic-device_neighbor
+--rw sonic-device_neighbor
+--rw DEVICE_NEIGHBOR
+--rw DEVICE_NEIGHBOR_LIST* [peer_name]
+--rw peer_name string
+--rw name string
+--rw mgmt_addr inet:ip-address
+--rw local_port -> /port:sonic-port/PORT/PORT_LIST/name
+--rw port string
+--rw type string
module: sonic-flex_counter
+--rw sonic-flex_counter
+--rw FLEX_COUNTER_TABLE
+--rw BUFFER_POOL_WATERMARK
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw DEBUG_COUNTER
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PFCWD
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PG_DROP
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PG_WATERMARK
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PORT
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PORT_RATES
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw PORT_BUFFER_DROP
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw QUEUE
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw QUEUE_WATERMARK
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw RIF
| +--rw FLEX_COUNTER_STATUS flex_status
| +--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
+--rw RIF_RATES
+--rw FLEX_COUNTER_STATUS flex_status
+--rw FLEX_COUNTER_DELAY_STATUS flex_delay_status
module: sonic-interface
+--rw sonic-interface
+--rw INTERFACE
+--rw INTERFACE_LIST* [name]
| +--rw name -> /port:sonic-port/PORT/PORT_LIST/name
| +--rw vrf_name -> /vrf:sonic-vrf/VRF/VRF_LIST/name
| +--rw nat_zone uint8
| +--rw mpls enumeration
+--rw INTERFACE_IPPREFIX_LIST* [name ip-prefix]
+--rw name -> /port:sonic-port/PORT/PORT_LIST/name
+--rw ip-prefix union
+--rw scope enumeration
+--rw family stypes:ip-family
module: sonic-loopback-interface
+--rw sonic-loopback-interface
+--rw LOOPBACK_INTERFACE
+--rw LOOPBACK_INTERFACE_LIST* [name]
| +--rw name string
| +--rw vrf_name -> /vrf:sonic-vrf/VRF/VRF_LIST/name
| +--rw nat_zone uint8
+--rw LOOPBACK_INTERFACE_IPPREFIX_LIST* [name ip-prefix]
+--rw name string
+--rw ip-prefix union
+--rw scope enumeration
+--rw family stypes:ip-family
module: sonic-mgmt_interface
+--rw sonic-mgmt_interface
+--rw MGMT_INTERFACE
+--rw MGMT_INTERFACE_LIST* [name ip_prefix]
+--rw name -> /mgmtprt:sonic-mgmt_port/MGMT_PORT/MGMT_PORT_LIST/name
+--rw ip_prefix stypes:sonic-ip-prefix
+--rw gwaddr inet:ip-address
+--rw forced_mgmt_routes* union
module: sonic-mgmt_port
+--rw sonic-mgmt_port
+--rw MGMT_PORT
+--rw MGMT_PORT_LIST* [name]
+--rw name string
+--rw speed uint16
+--rw autoneg string
+--rw alias string
+--rw description string
+--rw mtu uint16
+--rw admin_status stypes:admin_status
module: sonic-mgmt_vrf
+--rw sonic-mgmt_vrf
+--rw MGMT_VRF_CONFIG
+--rw vrf_global
+--rw mgmtVrfEnabled boolean
module: sonic-nat
+--rw sonic-nat
+--rw STATIC_NAPT
| +--rw STATIC_NAPT_LIST* [global_ip ip_protocol global_l4_port]
| +--rw global_ip inet:ipv4-address
| +--rw ip_protocol stypes:ip-protocol-type
| +--rw global_l4_port inet:port-number
| +--rw local_ip inet:ipv4-address
| +--rw local_port inet:port-number
| +--rw nat_type nat-type
| +--rw twice_nat_id uint16
+--rw STATIC_NAT
| +--rw STATIC_NAT_LIST* [global_ip]
| +--rw global_ip inet:ipv4-address
| +--rw local_ip inet:ipv4-address
| +--rw nat_type nat-type
| +--rw twice_nat_id uint16
+--rw NAT_GLOBAL
| +--rw Values
| +--rw admin_mode stypes:admin_mode
| +--rw nat_timeout uint32
| +--rw nat_tcp_timeout uint32
| +--rw nat_udp_timeout uint16
+--rw NAT_POOL
| +--rw NAT_POOL_LIST* [name]
| +--rw name string
| +--rw nat_ip ip-address-range
| +--rw nat_port string
+--rw NAT_BINDINGS
+--rw NAT_BINDINGS_LIST* [name]
+--rw name string
+--rw nat_pool -> ../../../NAT_POOL/NAT_POOL_LIST/name
+--rw nat_type nat-type
+--rw twice_nat_id uint16
module: sonic-ntp
+--rw sonic-ntp
+--rw NTP
| +--rw global
| +--rw src_intf* union
| +--rw vrf string
+--rw NTP_SERVER
+--rw NTP_SERVER_LIST* [server_address]
+--rw server_address inet:host
module: sonic-portchannel
+--rw sonic-portchannel
+--rw PORTCHANNEL
| +--rw PORTCHANNEL_LIST* [name]
| +--rw name string
| +--rw members* union
| +--rw min_links uint8
| +--rw description string
| +--rw mtu uint16
| +--rw admin_status stypes:admin_status
| +--rw lacp_key union
| +--rw tpid stypes:tpid_type
+--rw PORTCHANNEL_MEMBER
| +--rw PORTCHANNEL_MEMBER_LIST* [name port]
| +--rw name -> /sonic-portchannel/PORTCHANNEL/PORTCHANNEL_LIST/name
| +--rw port -> /port:sonic-port/PORT/PORT_LIST/name
+--rw PORTCHANNEL_INTERFACE
+--rw PORTCHANNEL_INTERFACE_LIST* [name]
| +--rw name -> /sonic-portchannel/PORTCHANNEL/PORTCHANNEL_LIST/name
| +--rw vrf_name -> /vrf:sonic-vrf/VRF/VRF_LIST/name
| +--rw nat_zone uint8
| +--rw mpls enumeration
+--rw PORTCHANNEL_INTERFACE_IPPREFIX_LIST* [name ip_prefix]
+--rw name -> /sonic-portchannel/PORTCHANNEL/PORTCHANNEL_LIST/name
+--rw ip_prefix stypes:sonic-ip-prefix
module: sonic-port
+--rw sonic-port
+--rw PORT
+--rw PORT_LIST* [name]
+--rw name string
+--rw alias string
+--rw lanes string
+--rw description string
+--rw speed uint32
+--rw autoneg string
+--rw adv_speeds* union
+--rw interface_type stypes:interface_type
+--rw adv_interface_types* union
+--rw mtu uint16
+--rw index uint16
+--rw admin_status stypes:admin_status
+--rw fec string
+--rw pfc_asym string
+--rw tpid stypes:tpid_type
module: sonic-route-common
+--rw sonic-route-common
+--rw ROUTE_REDISTRIBUTE
+--rw ROUTE_REDISTRIBUTE_LIST* [vrf_name src_protocol dst_protocol addr_family]
+--rw vrf_name union
+--rw src_protocol string
+--rw dst_protocol string
+--rw addr_family string
+--rw route_map* -> /rmap:sonic-route-map/ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw metric uint32
module: sonic-route-map
+--rw sonic-route-map
+--rw ROUTE_MAP_SET
| +--rw ROUTE_MAP_SET_LIST* [name]
| +--rw name string
+--rw ROUTE_MAP
+--rw ROUTE_MAP_LIST* [name stmt_name]
+--rw name string
+--rw stmt_name uint16
+--rw route_operation rpolsets:routing-policy-action-type
+--rw match_interface route-map-intf
+--rw match_prefix_set -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
+--rw match_ipv6_prefix_set -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
+--rw match_protocol string
+--rw match_next_hop_set -> /rpolsets:sonic-routing-policy-sets/PREFIX_SET/PREFIX_SET_LIST/name
+--rw match_src_vrf union
+--rw match_neighbor* union
+--rw match_tag* uint32
+--rw match_med uint32
+--rw match_origin string
+--rw match_local_pref uint32
+--rw match_community -> /rpolsets:sonic-routing-policy-sets/COMMUNITY_SET/COMMUNITY_SET_LIST/name
+--rw match_ext_community -> /rpolsets:sonic-routing-policy-sets/EXTENDED_COMMUNITY_SET/EXTENDED_COMMUNITY_SET_LIST/name
+--rw match_as_path -> /rpolsets:sonic-routing-policy-sets/AS_PATH_SET/AS_PATH_SET_LIST/name
+--rw call_route_map -> ../../../ROUTE_MAP_SET/ROUTE_MAP_SET_LIST/name
+--rw set_origin string
+--rw set_local_pref uint32
+--rw set_med uint32
+--rw set_metric_action metric-action-type
+--rw set_metric uint32
+--rw set_next_hop string
+--rw set_ipv6_next_hop_global string
+--rw set_ipv6_next_hop_prefer_global boolean
+--rw set_repeat_asn uint8
+--rw set_asn uint32
+--rw set_asn_list string
+--rw set_community_inline* string
+--rw set_community_ref -> /rpolsets:sonic-routing-policy-sets/COMMUNITY_SET/COMMUNITY_SET_LIST/name
+--rw set_ext_community_inline* string
+--rw set_ext_community_ref -> /rpolsets:sonic-routing-policy-sets/EXTENDED_COMMUNITY_SET/EXTENDED_COMMUNITY_SET_LIST/name
+--rw set_tag uint32
module: sonic-routing-policy-sets
+--rw sonic-routing-policy-sets
+--rw PREFIX_SET
| +--rw PREFIX_SET_LIST* [name]
| +--rw name string
| +--rw mode enumeration
+--rw PREFIX
| +--rw PREFIX_LIST* [name sequence_number ip_prefix masklength_range]
| +--rw name -> ../../../PREFIX_SET/PREFIX_SET_LIST/name
| +--rw sequence_number uint32
| +--rw ip_prefix inet:ip-prefix
| +--rw masklength_range string
| +--rw action routing-policy-action-type
+--rw COMMUNITY_SET
| +--rw COMMUNITY_SET_LIST* [name]
| +--rw name string
| +--rw set_type enumeration
| +--rw match_action enumeration
| +--rw action routing-policy-action-type
| +--rw community_member* string
+--rw EXTENDED_COMMUNITY_SET
| +--rw EXTENDED_COMMUNITY_SET_LIST* [name]
| +--rw name string
| +--rw set_type enumeration
| +--rw match_action enumeration
| +--rw action routing-policy-action-type
| +--rw community_member* string
+--rw AS_PATH_SET
+--rw AS_PATH_SET_LIST* [name]
+--rw name string
+--rw action routing-policy-action-type
+--rw as_path_set_member* string
module: sonic-system-aaa
+--rw sonic-system-aaa
+--rw AAA
+--rw AAA_LIST* [type]
+--rw type enumeration
+--rw login string
+--rw failthrough boolean
+--rw debug boolean
module: sonic-system-tacacs
+--rw sonic-system-tacacs
+--rw TACPLUS_SERVER
| +--rw TACPLUS_SERVER_LIST* [ipaddress]
| +--rw ipaddress inet:host
| +--rw priority uint8
| +--rw tcp_port inet:port-number
| +--rw timeout uint16
| +--rw auth_type auth_type_enumeration
| +--rw passkey string
| +--rw vrf string
+--rw TACPLUS
+--rw global
+--rw auth_type auth_type_enumeration
+--rw timeout uint16
+--rw passkey string
+--rw src_intf union
module: sonic-versions
+--rw sonic-versions
+--rw VERSIONS
+--rw DATABASE
+--rw VERSION string
module: sonic-vlan
+--rw sonic-vlan
+--rw VLAN_INTERFACE
| +--rw VLAN_INTERFACE_LIST* [name]
| | +--rw name -> /sonic-vlan/VLAN/VLAN_LIST/name
| | +--rw vrf_name -> /vrf:sonic-vrf/VRF/VRF_LIST/name
| | +--rw nat_zone uint8
| | +--rw mpls enumeration
| +--rw VLAN_INTERFACE_IPPREFIX_LIST* [name ip-prefix]
| +--rw name -> /sonic-vlan/VLAN/VLAN_LIST/name
| +--rw ip-prefix union
| +--rw scope enumeration
| +--rw family stypes:ip-family
+--rw VLAN
| +--rw VLAN_LIST* [name]
| +--rw name string
| +--rw vlanid uint16
| +--rw description string
| +--rw dhcp_servers* inet:ip-address
| +--rw mtu uint16
| +--rw admin_status stypes:admin_status
+--rw VLAN_MEMBER
+--rw VLAN_MEMBER_LIST* [name port]
+--rw name -> /sonic-vlan/VLAN/VLAN_LIST/name
+--rw port union
+--rw tagging_mode stypes:vlan_tagging_mode
module: sonic-vrf
+--rw sonic-vrf
+--rw VRF
+--rw VRF_LIST* [name]
+--rw name string
+--rw fallback boolean
