how can i monitor the real-time speed of the service provider link ?
manager node>list resource select the intherface and click in submit.
after 5 mints you can see infomations about bandwidth.
In NPM, real time speed is limited to how often you poll the interface in question. By default it is done every 120 seconds. You can go as low as 10 seconds.
I use the STG grapher tool when I want to see real time statistics. I find setting it to about 3 seconds polling gives a good display of what's going on on the link.