ru.unix.bsd

 
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 From : Gleb Smirnoff                        2:5020/400     07 Dec 2005  17:26:17
 To : Eugene Grosbein
 Subject : Re: ppp(8) as PPPoE client & mtu
 -------------------------------------------------------------------------------- 
 

 Eugene Grosbein <Eugene.Grosbein@f1.n5006.z2.fidonet.org> wrote:
 
 EG> Hастроил по Handbook подключение по PPPoE к провайдеру (сетевая fxp0).
 EG> tun0 поднимается, пакеты бегают, только вот на tun0 встает mtu 1500
 EG> даже при том что в конфиге я (в соответствии с man ppp) написал:
 
 EG> set mtu maximum 1500
 EG> set mru maximum 1500
 
          set mru [max[imum]] [value]
              The default MRU (Maximum Receive Unit) is 1500.  If it is
              increased, the other side *may* increase its MTU.  In theory
              there is no point in decreasing the MRU to below the default as
              the PPP protocol says implementations *must* be able to accept
              packets of at least 1500 octets.
 
              If the ``maximum'' keyword is used, ppp will refuse to negotiate
              a higher value.  The maximum MRU can be set to 2048 at most.
              Setting a maximum of less than 1500 violates the PPP rfc, but may
              sometimes be necessary.  For example, PPPoE imposes a maximum of
              1492 due to hardware limitations.
 
              If no argument is given, 1500 is assumed.  A value must be given
              when ``maximum'' is specified.
 
 -- 
 Totus tuus, Glebius.
 GLEBIUS-RIPN GLEB-RIPE
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