Re: Changing MTU?
Re: Changing MTU?
- Subject: Re: Changing MTU?
- From: Eric Gundrum <email@hidden>
- Date: Wed, 29 May 2002 11:06:43 -0700
Apple's PPP configurations have an 'lcp ' resource. One of the fields is
identified as mruSize. I believe it is a 2 byte value beginning 56 bytes
into the resource. (If you can't figure out which one, send me a private
note.) I do not recall if this truly is MRU or MTU. The subsequent 2 bytes
also might be helpful; I think they are supposed to be the upper limit of
the negotiable MTU. (The lower limit is the next two bytes.) I am not sure
that these values are actually used by Apple's PPP.
Years ago we experimented with several of the values in this resource; we
were unable to get useful results. However, my archives suggest that
changing the mruSize value was useful in communicating with a particular
flavor of the Redback BRAS.
As Duane mentioned, EnterNet now negotiates the MTU (and other items) from
within the stream. Since we already were in the stream, this was relatively
easy. It also was extremely helpful in dealing with the many broken PPPoE
servers out there. (I don't think any company reliably follows the
protocols.)
Regards...eric
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| | >Changing MTU? (From: "Chris Edgington" <email@hidden>) |