RE: Regarding J0 byte in LMP test message

[Nik Langrind <nik@equipecom.com>]

Hi,

What I said was silly... if there was a CR/LF in the binary data of the
64-byte checksum, then adding a CR/LF is not going to help.

Nik

> -----Original Message-----
> From: Nik Langrind [mailto:nik@equipecom.com]
> Sent: Thursday, May 16, 2002 2:04 PM
> To: 'Jonathan Lang'; 'Bhavesh Patel'; 'ccamp@ops.ietf.org'
> Subject: RE: Regarding J0 byte in LMP test message
> 
> 
> Hi,
> 
> One aspect of Bhavesh's question that sparked my interest: 
> CR/LF. I don't
> know whether the IP packet should be followed with a CR/LF or 
> not. It seems
> to me that one ought to follow up the packet with a CR/LF, so 
> that if the
> other end's SONET framer syncs to it, the IP packet will end 
> up sitting in
> the received section trace buffer with the IP Vers/Header 
> Length field in
> the first byte of the buffer.
> 
> On the other hand, one's receive code can't necessarily rely 
> on this, right?
> So when I am testing, anytime I get a stable section trace 
> messages, I ought
> to rotate through every byte, looking for IPV4, and calculating the IP
> header checksum to ensure that I've found the right starting point.
> 
> What are others doing?
> 
> Thanks,
> Nik
> 
> > -----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
> > > 
> > > 
> > 
>