The line rate is 32 KBytes per second. If you add compression, you might improve on that, depending on the nature of your data. Practically, you are unlikely to achieve greater than 90% of the maximum line rate.
However, don't forget that there are a lot of other factors invoolved that could slow you down, such as server performance, TCP window size vs. end-to-end delay, etc. etc. The overall performance is not entirely determined by the line rate.
Generally we assume that the available bandwidth is 75% of the line rate, the remaining 25% being the allowance for overheads, routing protocols etc.
If you are having a specific problem with the line, then post a show int from both ends of the line, and we shall see if we can work out what is going on.
Check the package offered by your ISP. If they are offering 256kbps dedicated, its always advisable to check with them whether its symmetric or asymmetric. Some ISPs offer more download speed as compared to the upload due to the fact that the download traffic is generally more than the upload traffic (it depends on the user setup too).
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...