[quagga-dev 5463] Re: [PATCH] ISIS support on big-endian architecture

Joakim Tjernlund Joakim.Tjernlund at transmode.se
Tue Jun 3 21:56:15 BST 2008



> -----Original Message-----
> From: quagga-dev-bounces at lists.quagga.net [mailto:quagga-dev-bounces at lists.quagga.net] On Behalf Of
> Joakim Tjernlund
> Sent: den 2 juni 2008 17:27
> To: paul at clubi.ie; quagga-dev at lists.quagga.net
> Cc: 'Jingjing Duan'
> Subject: [quagga-dev 5424] Re: [PATCH] ISIS support on big-endian architecture
> 
> 
> On Mon, 2008-06-02 at 16:13 +0100, paul at clubi.ie wrote:
> > On Sun, 1 Jun 2008, Joakim Tjernlund wrote:
> >
> > > Secondly, I don't think LSA s will be bigger than 1500(maybe I am
> > > missing something here)
> >
> > LSAs can be up to max-IP-datagramme-size - sizeof(struct IP) - sizeof
> > (ospf header) - sizeof (OSPF LSA update header). I.e. much bigger
> > than 1500.
> 
> I see, basically MTU - some bytes then.
> I saw the
>    #define OSPF_MAX_LSA_SIZE	   1500U
> in ospf_lsa.h so I presumed that this was an upper limit.
> 
>  Jocke

FYI, in 
  http://www.faqs.org/rfcs/rfc1008.html
the value of MODX is 5802 but
in quagga ISIS it looks like it is 5803. 
Perhaps this is OK, but better safe than sorry.

      Jocke 





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