Документация VAS Experts en:dpi:epdg:monitoring

The alarm system

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:50:35+00:00

The alarm system Alarm categories Criticism Alarma

Architecture of the monitoring system

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:17:02+00:00

Architecture of the monitoring system flowchart TB subgraph DataPlane["Data Plane"] IPSEC["IPSec ESP
IKEv2 SA / Child SA
Kernel xfrm"] GTPU["GTP-U Tunneller
S2b Data
ePDG ↔ PGW"] end subgraph ControlPlane["Control Plane"] IKE["IKEv2 SWu
EAP-AKA' auth"] DIAM["Diameter Client
SWx/SWm/S6b"] GTPC["GTPv2-C S2b
to PGW/SMF"] CTRL["ePDG Controller
Attach/Detach FSM"] end

Components and indicators

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:19:31+00:00

Components and indicators Monitoring coverage flowchart LR EXP["fast-epdg
/metrics :9817"] EXP --> CFG["Config
2 metrics"] EXP --> NET["Network
1 metric"] EXP --> PROTO["Protocols L5-L7
15 metrics"] EXP --> SVC["Service KPI
4 metrics"] EXP --> SESS["Session State
4 metrics"] EXP --> APP["Application
3 metrics"] EXP --> SYS["System
4 metrics"]

The deployment model

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T09:03:23+00:00

The deployment model flowchart TB subgraph Host1["ePDG Server"] EPDG["fast-epdg
(VoWiFi gateway)"] PLUGIN["/metrics endpoint
:9817"] EPDG -.-> PLUGIN end subgraph Host2["Monitoring server"] PROM["Prometheus"] GRAF["Grafana"] AM["Alertmanager"] SNMPTRAP["SNMP Trap Sender
(webhook gateway)"] PROM --> GRAF PROM --> AM AM --> SNMPTRAP end

Integration into a single EPC Monitoring stack

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:54:54+00:00

Integration into a single EPC Monitoring stack ePDG monitoring is fully integrated into overall packet core monitoring: flowchart TB subgraph Common["Unified Monitoring Stack"] PROM["Prometheus"] GRAF["Grafana"] AM["Alertmanager"] end

Integration interfaces

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:29:42+00:00

Integration interfaces flowchart LR CORE["VAS Experts
ePDG Monitoring"] CORE --> P["Prometheus
CNCF / OpenMetrics"] CORE --> S["SNMP v2c
EPDG-MIB"] CORE --> G["Grafana
JSON Provisioning"] CORE --> W["Webhooks
ChatOps"] CORE --> AM["Alertmanager
Routing"]

List of metrics

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:24:21+00:00

List of metrics All metrics are exported through a single /metrics endpoint in Prometheus text format. The name follows the rules of Prometheus: epdg__[_unit], the Counter type has the suffix _total, Histogram is the suffix _seconds/_bytes

Coverage of metrics by OSI levels

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T09:00:31+00:00

Coverage of metrics by OSI levels graph LR L1["L1 Physical
NIC counters via system"] L2["L2 Data Link
MAC, VLAN"] L3["L3 Network
IP, IPSec ESP, GTP-U"] L4["L4 Transport
TCP/UDP/SCTP"] L5["L5 Session
GTPv2-C, IKEv2"] L6["L6 Presentation
IKEv2/IPSec encryption, EAP-AKA'"] L7["L7 Application
Diameter, service bearer ops"] Operations["Operations
KPI, SLA, Capacity"] CX["CX Level
Subscriber Experience"]

Metric exporter configuration

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T09:04:59+00:00

Metric exporter configuration The monitoring section in fast-epdg.conf: monitoring { enabled = yes listen_port = 9817 listen_address = 0.0.0.0 update_interval = 10 metrics { ikev2 = yes gtp = yes diameter = yes service = yes session = yes app = yes system = yes } }

Standards and compatibility

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T09:01:46+00:00

Standards and compatibility Standard Area Application 3GPP TS 29.273 SWx/S6b/SWm Methodology for accounting for Diameter messages and resulting codes 3GPP TS 24.302 SWu (IKEv2) Definition of IKEv2 message types and error codes 3GPP TS 33.402

Visualization and operational dashboards

Anonymous (anonymous@undisclosed.example.com) — 2026-05-07T08:52:48+00:00

Visualization and operational dashboards Composition of dashboards Dashboard Panel Purpose ePDG Overview 10 Service availability, connection success rate, number of active sessions, SWu/SWm/S2b status, interface bandwidth IKEv2 Details 10