RAD Data comm MPW-1 Specifications download pdf (Page 23)

Installation and Operation Manual Chapter 1 Introduction

MPW-1 MP-4100 Ver. 2.0 Functional Description 1-11

timeslot assignment is made as part of the pseudowire configuration

procedure, and it determines the cross-connect operations performed by the

pseudowire cross-connect matrix (see below).

MPW-1 has a total of eight internal DS1 ports, each capable of handling 32

64 kbps timeslots. The user can independently configure each internal DS1 port

in accordance with the desired operation mode:

• Framed mode, which enables individual handling of each port timeslot, or

unframed (all the 32 timeslots of the port handled as a whole, and

cross-connected to the same destination port)

• Signaling transfer: enabled or disabled. The MPW-1 module itself does not

process signaling information: all the necessary processing is performed

under the control of the CL module, either at the source TDM port or within

the CL module itself. Therefore, all the Megaplex-4100 signaling processing

features, including use of signaling profiles, are also effective for traffic

transferred over pseudowires by means of MPW-1 modules (see the

Megaplex-4100 Installation and Operation Manual

for details).

Pseudowire Cross-Connect Matrix

The pseudowire cross-connect matrix is a timeslot cross-connect matrix similar to

the TDM cross-connect matrix, which routes traffic from the internal DS1 ports to

the pseudowire packet processors.

The cross-connect operations are configured as part of the attachment circuit

parameters for each pseudowire.

Packet Processing Subsystem

The packet processors in the MPW-1 packet processing subsystem perform the

functions necessary to convert TDM traffic directed to the MPW-1 internal DS1

ports to packetized traffic for transmission over pseudowires.

The maximum number of pseudowires that can be processed for each DS1 port,

provided the port uses the DS0 cross-connect mode, is 16 (only one pseudowire

is supported when the port uses the DS1 cross-connect mode).

A pseudowire can process traffic from only one internal DS1 port.

Each pseudowire has a header whose structure depends on the selected PSN

type, and includes

labels

that specify the uniquely specify the pseudowire source

and destination, in accordance with the following rules:

• When the PSN type is UDP/IP, the user-specified labels are in the range of 1

to 8063. The pseudowire labels determine the UDP port numbers, as

explained in the

Determining UDP Port Numbers Used by Pseudowires

section

• When the PSN type is MPLS/ETH, the user-specified labels are used as MPLS

labels (these labels are always located at the bottom of the MPLS label

stack). The allowed range for pseudowire labels is then 16 to 1048575.

Different source and destination labels can be used. In this case, it is necessary

to ensure that the source (inbound) label selected at one pseudowire endpoint is

Note

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 107 108

Comments to this Manuals

No comments

RAD Data comm MPW-1 Specifications Page 23

Comments to this Manuals

Related products and manuals for Gateways/controllers RAD Data comm MPW-1