On Thu, 9 Jul 1998, Tony S. Hariman wrote:
Does anybody have experience having a T1 circuit with PPP encapsulation getting only 1290 Kbps maximum throughput looking at "sh int" result from cisco router or MRTG ?
Oh, around 1536 :-)
This is the explanation our upstream provider gave us:
You have a 1.536Mbps port. However, there is the overhead from PPP and the translation overhead which takes place in all circuits. Judging by your settings that limit ends up somewhere between 1.3 and 1.4. This overhead would be the non-data portion of cells or frames for example. For example, you might have 1.3 Mbps of data which gets framing or cell information appended onto it before sending taking up additional bandwidth. It is to be expected in all circuits.
Hehe, find a new ISP. There is some overhead with PPP, but it is not close to that amount. Most likely your ISP does not have the bandwidth to deliver all of your bandwidth.
Thank you for your help.
No problem.
<> Nathan Stratton Telecom & ISP Consulting www.robotics.net nathan@robotics.net
Tony S. Hariman http://www.tsh.or.id Tel: +62(21)574-2488 tonyha@compuserve.com