CCIE Pursuit Blog

December 16, 2008

Lab Tip: A Use For The Useless Tc Command

CCIE candidates who have spent any time playing with Frame Relay Traffic Shaping know that the ‘frame tc’ command is worthless and that you need to set the Tc by altering the Bc and/or CIR.  But I did discover a use for this command.

Say you get a task like this:

“Use the lowest interval (Tc) available”

If you have this value memorized, then you’re golden.  But if you don’t then you might spend some of your valuable lab time searching the documentation for this value….OR you could turn to the ‘frame tc’ command for help:

Rack1R3(config)#map-class frame TEST
Rack1R3(config-map-class)#frame tc ?
<10-10000>  Tc, milliseconds

Ah.  We can see that the lowest interval available is 10 milliseconds.  The maximum is the insanely high 10,000 milliseconds (10 seconds).

1 Comment »

  1. lol, still pretty worthless though wouldn’t you agree?

    Comment by Luis Garcia — December 18, 2008 @ 12:20 am | Reply

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