From: Pavel Bykov (slidersv@gmail.com)
Date: Wed Oct 08 2008 - 09:45:53 ART
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
>
>
> _________________________________________________________________
> Make a mini you and download it into Windows Live Messenger
> http://clk.atdmt.com/UKM/go/111354029/direct/01/
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>
-- Pavel Bykov ------------------------------------------------- Stop the braindumps! http://www.stopbraindumps.com/Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Sat Nov 01 2008 - 15:35:20 ARST