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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Understanding E&M Interfaces

Understanding E&M Interfaces

This section describes the process of transparently transmitting E&M data through an MPLS tunnel.

As shown in Figure 10-1, the E&M data transceiver connects to the E&M terminal in wired or wireless mode and connects to the remote data processing center through the IP/MPLS network.

RouterA connects to the data processing center through an E&M interface, and RouterB connects to the E&M data transceiver through an E&M interface. RouterA and RouterB have set up an MPLS tunnel between them.

Figure 10-1  Transparent transmission of E&M data through the MPLS tunnel

When the data processing center needs to transmit data to the E&M terminal, the E&M data is transparently transmitted through the MPLS tunnel as follows:

  1. The E&M interface of RouterA receives E&M data from the data processing center.
  2. RouterA encapsulates E&M data into a PWE3 packet.
  3. RouterA transparently transmits the PWE3 packet to RouterB through the MPLS tunnel.
  4. RouterB parses E&M data from the PWE3 packet and transmits the E&M data through the E&M interface to the E&M data transceiver.
  5. The E&M data transceiver transmits the E&M data to the E&M terminal in wired or wireless mode.

The process of transmitting data from the E&M terminal to the data processing center is the reverse of the preceding process.

Updated: 2019-03-06

Document ID: EDOC1100069331

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