[aprssig] Something odd with the internet servers?

Bill Vodall wa7nwp at jnos.org
Fri Jan 14 10:46:04 EST 2005


It may not be per-the-spec, but we certainly run packets of 1K
or bigger on a regular basis.  It works very well on a 9k6 repeater.

Bill - WA7NWP


> Yes, I am sure.  From the 2.0 specification: "The I field can be up to
> 256 octets long, and shall contain an integral number of octets."  The
> 2.2 specification added a NI field for negotiating I-Field length, but
> that is only valid for connected packets (which APRS is not).
> 
> Reference http://www.tapr.org/tapr/html/Fax25.html
> 
> 73,
> 
> Pete Loveall AE5PL
> mailto:pete at ae5pl.net 
> 

> > 
> > Sure about that?  I probably need to go look at the spec 
> > again, but I could swear we used to run 1024 byte packets on 
> > TCP/IP.  I don't think 256 is an inherent limit of AX.25 protocol.
> > 
> > A quick look at the AX.25 HOWTO document shows that even 
> > Linux allows 1 to 512 as the length.





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