> When some site is sending high-priority packets through a PPP link,
> all other packet types are completely blocked. Normally, the
> high-priority packets are used by interactive connections, but I just
> ran into another ftp site that sends out all the packets with the
> interactive flag set.

> This blocks all other connections AND the PPP link LCP packets.

IMO there are two bugs here, only one of which is ours.

First is the FTP site; it's a gross abuse of the relevant bit to use
that for bulk data connections.  (What bit is it, by the way?  One of
the TOS bits?)

The other is that high-priority data packets lock out LCP (and
presumably IPCP) packets.  This, I would say, should be fixed.

> [I]f someone decides to flood a PPP link with high-priority packets,
> the link will be totally unusable.

This is a risk in any case.  Perhaps high-priority packets shouldn't be
allowed to use up more than (say) 75% of the line, unless there's no
non-high-priority traffic?

But on the other hand, is this really something that belongs in ppp?

					der Mouse

			       mouse@rodents.montreal.qc.ca
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