RE: Regarding J0 byte in LMP test message

[Jonathan Lang <jplang@calient.net>]

Bhavesh,

In Section 14.9, it gives 6 different options for encoding the Test message
when the encoding type is SONET/SDH, one of which is the 16-byte J0.

The Test messages are IP encoded so that it is common across various
transport mechanisms (not to mention the fact that ALL other LMP messages
are IP encoded). The 16-byte J0 is an exception because of the byte
limitation.

Thanks,
Jonathan

-----Original Message-----
From: Bhavesh Patel [mailto:bpatel@fwion.com]
Sent: Thursday, May 16, 2002 2:14 PM
To: Jonathan Lang; 'ccamp@ops.ietf.org'
Subject: RE: Regarding J0 byte in LMP test message


Jonathan,

I have read section 14.9, my question is precisely why choose J0 byte
messages and why the restriction on test message to be IP encoded?
Thanks.

bhavesh

-----Original Message-----
From: Jonathan Lang [mailto:jplang@calient.net]
Sent: Thursday, May 16, 2002 1:39 PM
To: 'Bhavesh Patel'; 'ccamp@ops.ietf.org'
Subject: RE: Regarding J0 byte in LMP test message


Bhavesh,
  The answers to your questions can be found in Section 14.9 of the LMP
draft. Please look at the Verify Transport Mechanism.

Thanks,
Jonathan

> -----Original Message-----
> From: Bhavesh Patel [mailto:bpatel@fwion.com]
> Sent: Thursday, May 16, 2002 5:53 AM
> To: 'ccamp@ops.ietf.org'
> Cc: Bhavesh Patel
> Subject: Regarding J0 byte in LMP test message
> 
> 
> 
> Hi,
> 
> I have a question regarding LMP link verification.
> 
> 1)Why did the authors of LMP protocol choose J0 byte for sending test
> message when encodingType=sonet? Is it because the OXC/PXC falls in the
> section portion of sonet network?
> 2) Why the need to make J0 byte IP encoded message? why it cannot be an
> ascii string with CR/LF termination similar to J1 byte?
> 2) In a metro network application where one deploys PXCs connected point
to
> point, what does it fall under section/line/path (assume PXC is doing some
> O-E-O for lmp test message needs for sending over data bearing links)?
> Why not use J1 byte for lmp test message? 
> 
> Your replies are appreciated.
> 
> Bhavesh Patel
> Embedded Software 
> bpatel@fwion.com <mailto:bpatel@fwion.com>
> 732-946-7400, ext 2087
> 
>