I believe, and am very prepared to be proven wrong, that when sending the
update it *should* assume the mask of the sending interface since it is in
the same classful network. If it were in a different classful network, it
would assume a classful mask of 255.255.0.0.
However, it seems to be acting as though it is assuming a classful mask in
this case. Which means that you could get the "suppressing null update" due
to split horizon.
---JRE---
"Mohamed Heeba" <[EMAIL PROTECTED]> wrote in message
91B200CBBEC3D111992A00805F31E6CB880767@MINAMAIL">news:91B200CBBEC3D111992A00805F31E6CB880767@MINAMAIL...
> hi
> it is ver 1 rip , i know it will not carry mask info , my questing is if
the
> mask is inconsistent , will it send updates or not ??
>
> thx
>
> > -----Original Message-----
> > From: Jim Erickson [SMTP:[EMAIL PROTECTED]]
> > Sent: Monday, December 04, 2000 12:01 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Rip problem , suppressing null update!
> >
> > Which RIP version are you using? IIRC, version 1 doesn't support VLSM
> > since
> > it doesn't carry subnet mask info in its routing updates.
> >
> > ---JRE---
> >
> > "Mohamed Heeba" <[EMAIL PROTECTED]> wrote in message
> > 91B200CBBEC3D111992A00805F31E6CB880765@MINAMAIL">news:91B200CBBEC3D111992A00805F31E6CB880765@MINAMAIL...
> > > guys !
> > > i have two routers connected through their serial , im configuring rip
> > on
> > > them
> > >
> > > R1 e0 ip add is 172.16.1.1/27
> > > ser 0 ip add is 172.16.1.33/28
> > >
> > > R2 e0 ip add is 172.16.1.49/29
> > > ser 0 ip add is 172.16.1.34/28
> > >
> > > there is no rip updates between the two routers ..im getting only
> > > "suppressing null updates "
> > >
> > > also when i change the mask of ser0 on R1 to /27 , the updates pass
> > normally
> > > and take the mask of the
> > > /28 on the other end
> > >
> > > my question is
> > > Does this mean that if the mask is inconsistent on RIP router , it
will
> > not
> > > send updates ?????
> > > this means when R1 mask is consistent (/27) for both interfaces , the
R1
> > > will send updates but it will not receive anything because R2 masks
are
> > not
> > > consistent ??
> > >
> > >
> > > somebody to confirm please !!!!!
> > >
> > > _________________________________
> > > FAQ, list archives, and subscription info:
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> > >
> >
> >
> > _________________________________
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>
> _________________________________
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