SOMEN BHATTACHARYA wrote:
>
> --- Acee Lindem <aceeREDBACK.COM> wrote:
> > Erblichs wrote:
> > >
> > > Group,
> > >
> > > I guess you could say that I have a dumb
> > question.
> > >
> > > If a DR wanted to support say 400+ adjs
> > with a standard
> > > Ethernet 1.5 MTU, is it acceptable to send
> > out more
> > > than 1 hello describing all of its nbrs?
> > >
> > > Note: each nbr id would consume 4 bytes
> > and thus
> > > the length of the 1 pkt would be greater
> > than MTU size.
> > >
> > > I am assuming that 2 pkts per hello
> > interval would
> > > be transmitted.
> >
> > Erblichs,
> >
> > This won't work. Based the neighbor FSM, the
> > neighbors will all go to
> > One-Way state when they receive the hello packet not
> > including them in
> > the hello packet. Better to let the IP stacks
> > fragment and
> > reassemble.
>
> Does the OSPF Hello packet header include any
> Multi-Packet indicator (similar to More Flag) ?

Nope - and it really doesn't make sense to talk about
modifications to the protocol when IP fragmentation/reassembly
solves the problem.

>
> If so then Neighbor FSM can wait till the last
> Hello packet (in a multi-packet hello) arrives
> and then set Neighbor to 1-Way if the receving router
> itself is not included in any of the fragment hellos.
>
> This could be an alternate to the IP fragmentation
> to transport large OSPF hello packets.
>
> >
> >
> > >
> > > It is that I just don't remember any RFC
> > describing
> > > this condition.
> > >
> > > Pointers please...
> > >
> > > Thanks,
> > >
> > > Mitchell Erblich
> > > Sr. Software Engineer
> > > ` ======================
> >
> > --
> > Acee
>
> =====
> Somen Bhattacharya
> E-Mail : rob_pathyahoo.com
>
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--
Acee

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