ChatDiagram
NETWORK TOPOLOGY

Mobile Packet Core (EPC) with S1 and X2 Interfaces

A worked network topology example, rendered live. Open it in the AI editor and adapt it to your own case.

UPDATED 2026-08-13
TYPENetwork
USE-CASEService Provider Network
EXAMPLEMobile Packet Core (EPC) with S1 and X2 Interfaces
Make this diagram your own.

Open it in the AI editor with a prompt pre-filled — keep what works, change what doesn't.

CASE ANALYSIS

Scenario

This service provider network diagram models the 4G LTE Evolved Packet Core (EPC), including radio access eNodeBs connected to the core via S1-MME and S1-U links and interconnected by X2.

Key decisions

  • Mapped eNodeBs to ap kinds and user devices to mobile kinds inside a Radio Access Network zone.
  • Grouped core network functions (MME, SGW, PGW, HSS, PCRF) in an Evolved Packet Core zone with tier: core.
  • Added S1-MME, S1-U, and X2 link annotations to make interface roles explicit without cluttering device labels.

When to reuse this

Use this topology when documenting or explaining LTE/EPC service provider architectures, especially where S1 and X2 interface visibility matters.

← See more service provider network examples
Open this example in the editor →

Tweak it with chat, export PNG/SVG, or fork it for your own use case.