There is no way to determine from the router the amount of bandwidth your provider has actually provisioned to you.
The bandwidth statement is a configurable amount which does not reflect the actual bandwith, and this is what you see in the output of the "sh int serial".
Ethernet interfaces determine the bandwith from auto-negotiation (unless set to a fixed speed), but even this amount does not need to be the actual bandwidth provisioned. Your Ethernet provider could provision only 20MB while your interface shows still 100MB bandwidth.
The only way to determine the actual bandwidth is to fill the link with traffic and monitor the amount of interface utilization. For this exercise select traffic types which are not affected by latency or packet loss (e.g. UDP). By approximation, you can use various speedtests available on the Internet (e.g. www.dslreports.com).
The clock rate is a configurable setting. More generally, controller information will give you at best information on the bitrate at which you can send traffic. The available end-to-end bandwidth however can still be limited by provider equipment down the line, or the simple fact that your traffic enters a shared network with contention (this is also the case for point-to-point links). Information on the bandwithh you really can use end-to-end needs network utilization measurements, using tools as suggested in one of the earlier posts.
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[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
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IntroductionOSPF, being a link-state protocol, allows for every router
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