Can IP SLA determine maximum available bandwidth?

I've searched for this information but all I come up with are articles describing how IP SLA can be used for determining any jitter and latency. By using a network monitoring tool is it possible to determine what the maximum bandwidth of a link is? If so, what data does the tool utilize to determine the link's bandwidth?
I have a gigabit Metro Ethernet link and according to the diagrams from the ISP, it looks like we're only using 100Mbit of it. The routers on each end are 3925E with the HSEC license. I appreciate any help in determining the speed of my link.

I've searched for this information but all I come up with are articles describing how IP SLA can be used for determining any jitter and latency. By using a network monitoring tool is it possible to determine what the maximum bandwidth of a link is? If so, what data does the tool utilize to determine the link's bandwidth?
I have a gigabit Metro Ethernet link and according to the diagrams from the ISP, it looks like we're only using 100Mbit of it. The routers on each end are 3925E with the HSEC license. I appreciate any help in determining the speed of my link.

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