From: sameer khan (khanzadap@hotmail.com)
Date: Wed Oct 08 2008 - 09:59:58 ART
hey pavel;
thanks for reply, i will be greatfull if any pointer to a book or doc if you
can provide.
i would appreciate if any of the expert can kindly comment on serial vs
ethernet interfaces please
Thanks> Date: Wed, 8 Oct 2008 14:45:53 +0200> From: slidersv@gmail.com> To:
khanzadap@hotmail.com> Subject: Re: Serial vs Ethernet interface> CC:
ccielab@groupstudy.com> > Serial interfaces support some features that require
negotiations, like LFI> or Header Compression, which is not available on
Ethernet, and therefore> voice will take much more bandwidth due to overhead,
which would matter if> you'd have 1000 simultaneous calls for example and
100Mb line.> Otherwise it's searization you should pay a bit closer attention
to.> Remember - interface cannot send data at any other speed than it's
speed.> Meaning if you have 1Gbps interface, it will either send at 1Gbps or 0
at> any exact point in time. It's only averaging data in some interval (5min>
default 30s minimum on interface level) that we see some percentage being>
used. So 1GbE we can set only at 1000/100 or in some cases even 10M, on top>
of that we than build shaping/policing. Serail's speed settings could be> more
granular, and we would shape/police on top of that.> With the correct settings
data will not know any difference, but in making> those settings you need to
make correct choices, so you don't wait for 0,25> seconds for your shaping
bucket to be refilled (but remember - there is no> such thing as waiting in
Policing - the tokens are relatively calculated> from time difference between
arrived packets, not some interval from> absolute system time like it is in
shaping).> > There is more to this, but this is just for starters.> > On Wed,
Oct 8, 2008 at 12:32 PM, sameer khan <khanzadap@hotmail.com> wrote:> > > Hi;>
>> > I am confused about difference in both, in terms of qos offered by
offered> > by> > both interfaces? , will there be any service degradation will
be faced if> > used> > with ethernet on isp level services.> >> >> > Thanks>
>> > P.s.> > I know this is kinda lame question but what to see experts point
of views> > as> > compare to mine :D> >> >> >
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