Cisco Cisco ASR 5700
Mobility Management Entity Overview
Network Deployment and Interfaces ▀
MME Administration Guide, StarOS Release 18 ▄
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Figure 3. E-UTRAN/EPC Network Scenario
Supported Logical Network Interfaces (Reference Points)
The MME supports the following logical network interfaces/reference points:
S1-MME Interface
This interface is the reference point for the control plane protocol between eNodeB and MME. S1-MME uses the S1
Application Protocol (S1-AP) over the Stream Control Transmission Protocol (SCTP) as the transport layer protocol for
guaranteed delivery of signaling messages between MME and eNodeB (S1).
Application Protocol (S1-AP) over the Stream Control Transmission Protocol (SCTP) as the transport layer protocol for
guaranteed delivery of signaling messages between MME and eNodeB (S1).
This is the interface used by the MME to communicate with eNodeBs on the same LTE Public Land Mobile Network
(PLMN). This interface serves as path for establishing and maintaining subscriber UE contexts.
(PLMN). This interface serves as path for establishing and maintaining subscriber UE contexts.
The S1-MME interface supports IPv4, IPv6, IPSec, and multi-homing.
One or more S1-MME interfaces can be configured per system context.