vendredi 14 août 2009

Frame-Relay Legacy Traffic Shaping

Some recalls :

Guaranteed rate = minimum guaranteed rate by the Telco. Configured with minCIR (bps) by default is 1/2 CIR
CIR = rate provided by Telco during no congestion. Configured with CIR (bps) By default it's 2x CIR
Access rate = maximum rate of the link. Configured with Bc (bits). Bc = (Access Rate - CIR)*Tc By default Tc is 125ms or 1/8 of seconds.

Example
32kbps is guarantedd
64kbps of Cir
192kbps of Access Rate

map-class frame-relay cisco
frame-relay cir 64000
frame-relay mincir 32000
frame-relay adaptive-shaping becn
frame-relay bc 8000
frame-relay be 16000
interface Serial0/0 
interface Serial/0/
frame-relay traffic-shaping
frame-relay class cisco

Verification commands :

show traffic-shaping

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