pseudowire

Pseudowire ( sometimes spelled as pseudo wire or abbreviated as PW) is a mechanism for emulating various networking or telecommunications services across packet-switched networks using Ethernet, IP, or MPLS... (Continued)

Pseudowire ( sometimes spelled as "pseudo wire" or abbreviated as PW) is a mechanism for emulating various networking or telecommunications services across packet-switched networks that use Ethernet, IP, or MPLS. Services emulated can include T1 leased line, frame relay, Ethernet, ATM, TDM, or SONET/SDH. As defined in RFC 3985 ("Pseudo Wire Emulation Edge-to-Edge [PWE3] Architecture") a pseudowire delivers the bare minimum of functionality necessary to emulate a wire with some required degree of fidelity for some specific service definition.

Required functions for PWs include the following:

  • Encapsulating service-specific bit streams, cells, or protocol data units (PDUs) that appear at some ingress port, then ferrying them across some IP path or through an MPLS tunnel.
  • Occasionally managing order and timing of incoming PW traffic so as to properly emulate a service with the necessary fidelity (TDM and ATM are good examples where timing issues are very important).

Seen from the perspective of customer edge equipment (CE), a PW appears to be an unshared link or a circuit for some designated service. PWs provide a relatively straightforward mechanism to implement arbitrary services across packet-switched networks, and to achieve interoperability among arbitrary sets of equipment from multiple vendors.

This was first published in February 2008

Continue Reading About pseudowire

Glossary

'pseudowire' is part of the:

View All Definitions

Dig deeper on Ethernet

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchSDN

SearchEnterpriseWAN

SearchUnifiedCommunications

SearchMobileComputing

SearchDataCenter

SearchITChannel

Close