Need to simulate fractional T-1 for test lab.

[Randall White]

Hi All,

How can I set up a pair of routers to simulate a fractional T-1? I have a pair of 2500s with a back to back serial cable, and I want to vary the actual link speed from full T-1 down to 128k to test some servers that will be on each end.

Is there any easy way to do this?

Thanks, Randy

[c.mccoy]

Randy,

You can vary the clock rate on the physical DCE side of your back-to-back cable. Is that enough for you? I forget the speeds a 2500 will do, but you can verify this by typing "clock rate ?" to see the different speeds your 2500 will do.//CM

[ddecan]

On the DCE side, (below is a 2500)

tweety(config-if)#clock rate ?

Speed (bits per second)

<300-4000000> Choose clockrate from list above

so to run 128K, it would be clock rate 128000

Then the DTE side would automatically clock off of the DCE side.