Cisco ASR 900 Series Configuration Guide

CHAPTER 1
Configuring CEM
This module describes how to configure Circuit Emulation (CEM).
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Overview of Circuit Emulation, page 1
•
Configuring CEM for SAToP, page 2
•
Verifying CEM Statistics for SAToP, page 6
•
Associated Commands, page 7
•
Additional References for Configuring CEM, page 9
Overview of Circuit Emulation
Circuit Emulation (CEM) is a technology that provides a protocol-independent transport over IP/MPLS
networks. It enables proprietary or legacy applications to be carried transparently to the destination, similar
to a leased line.
CEM provides a bridge between a Time-Division Multiplexing (TDM) network and Multiprotocol Label
Switching (MPLS) network. The chassis encapsulates the TDM data in the MPLS packets and sends the data
over a CEM pseudowire to the remote Provider Edge (PE) chassis. As a result, CEM functions as a physical
communication link across the packet network.
The chassis supports the pseudowire type that utilizes CEM transport: Structure-Agnostic TDM over Packet
(SAToP).
L2VPN over IP/MPLS is also supported on the interface modules.
Restrictions for CEM
The framed command is not supported.
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
ASR 900 Series)
1

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English