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Configuring Pseudowire
This chapter provides information about configuring pseudowire features on the Cisco ME 3600X
24CX Series Switch. It contains the following sections:
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Pseudowire Overview
The following sections provide an overview of pseudowire support on the Cisco ME 3600X
24CX Series Switch.
Circuit Emulation Overview
Circuit Emulation (CEM) is a technology that provides a protocol-independent transport over IP
networks. It enables proprietary or legacy applications to be carried transparently to the destination,
similar to a leased line.
The Cisco ME 3600X 24CX Series Switch supports two pseudowire types that utilize CEM transport:
Structure-Agnostic TDM over Packet and Circuit Emulation Service over Packet-Switched Network.
The following sections provide an overview of these pseudowire types.
Structure-Agnostic TDM over Packet
SAToP encapsulates TDM bit-streams (T1, E1) as PWs over PSNs. It disregards any structure that may
be imposed on streams, in particular the structure imposed by the standard TDM framing.
The protocol used for emulation of these services does not depend on the method in which attachment
circuits are delivered to the PEs. For example, a T1 attachment circuit is treated the same way for all
delivery methods, including: PE on copper, mapped into a virtual tributary of a SONET/SDH circuit, or
carried over a network using unstructured Circuit Emulation Service (CES). Termination of specific
carrier layers used between the PE and circuit emulation (CE) is performed by an appropriate network
service provider (NSP).
OL-27620-01
Pseudowire Overview, page 5-1
Configuring Structure-Agnostic TDM over Packet (SAToP), page 5-5
Configuring Circuit Emulation Service over Packet-Switched Network (CESoPSN), page 5-6
Configuring Pseudowire Redundancy, page 5-7
Verifying the Interface Configuration, page 5-8
C H A P T E R
Cisco ME-3600X-24CX Series Switch Chassis Configuration Guide
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