Path overhead - sonet sdh , Computer Networking

Path  Overhead

It is part  of SPE  and contain followings  information: Performance monitor of synchronous transport , signal , path , track ,parity ,checks,  and path  status.

702_Path  Overhead.png

                                                                                     Figure  Path Overhead

a.Path  trace byte : The JI bytes in consecutive frames form a 64 kbps channel used for  tracking the path . the JI byte send a continuous 64 bits string to verify  the connection. The choice  of the  string  is left to the application  programs.

b.Path parity byte : Byte B3 is for  bit interleaved parity  like byte B1 and B2. But calculated for the path header.

c.Path signal  label byte > Byte  C2 is the  path  identification byte. It is used to  identify different protocols  used at higher levels .

d.Path status byte > Byte  G1 is sent by the receiver to communicate  its status to the  sender.

e.Path  user channel byte : The byte 2 bytes in consecutive frames like the F1 bytes form a 64 kbps channel is reserved for user needs,, but  at the path  level.

f.Virtual tributary indicate byte H4 is the multi frame indicator. It  indicates payloads that cannot  fit in single frame. Virtual tributaries are discussed in the  next section.

 

Posted Date: 3/19/2013 1:25:31 AM | Location : United States







Related Discussions:- Path overhead - sonet sdh , Assignment Help, Ask Question on Path overhead - sonet sdh , Get Answer, Expert's Help, Path overhead - sonet sdh Discussions

Write discussion on Path overhead - sonet sdh
Your posts are moderated
Related Questions
Q. Describe Mail Access Protocols? Mail Access Protocols - Used by receiver to retrieve mail when desired - Post Office Protocol, version 3 (POP3) is a simple limited

What is Client/Server? Clients and Servers are part logical entities that work together over a network to accomplish a task. Lots of systems with very dissimilar architectures

What is Bookmark A list of pages a user likes to frequently visit. Netscape® Navigator and Explorer® have a "bookmark" menu item which allows users to add favourite sites vi

Determine the command that forces the router to load into ROM mode upon a reload?  Ans) boot system rom ia the command that forces the router to load into ROM mode upon a reload

CAUSES OF FAILURES Every failure has a well-defined cause.  Any system or device has an inherent strength or capacity to resist failures. This depends on design, material, man

Multicast Routing Protocols Multicast group addresses are assigned by IANA [Internet Assigned Numbers Authority for well known services and protocols. Information is exchang

Fat tree: It is a customized version of tree network. In this network bandwidth of edge (or connecting wire between nodes) increases in the direction of root. It's a more realisti

Question 1: The following is a dump of a TCP header in hexadecimal format: 00CD0018 00000EF1 00000D5D 502200D1 01BF0010 Please answer the following two parts of questions

MIME The Multipurpose Internet Mail Extensions While  the message  headers described in are satisfactory for sending  ordinary  ASCII text they are  not sufficiently Reich for

Question : (a) Explain the ‘RAD' methodology with a suitable diagram. (b) One of the activities to be performed during Rapid Application Development is Rapid Business Analys