I am facing difficulty understanding the calculation of both Bc and Be in traffic policing but let's ignore Be for a moment. The below formula is used to determine the number of tokens that are filled in the Bc bucket:
Bc = Current_Packet_arrival_time - Previous_Packet_arrival_time x Polced_rate / 8
Because this formula is used to know the number of bytes (or tokens) in the bucket, this also means that the formula is used to calculate the Bc.
Now, i am confused with another formula that also calculate the Bc if i don't configure it. This is actually done by the router or FR switch.
Bc = (CIR x 0.25 sec) / 8bits/byte
So, which formula shall i use to calculate the Bc in Policing?
In shaping, the Bc calculation is straight forward by using : Bc = Tc x CIR or Shaped Rate
And let's say, if i use the first formula, how can i apply it?
For instance, If the bucket is filled with Bc tokens on packets arrival, then how can i detemine the current packet arrival and the previous packet arrival values? .... the book doesn't give much details about it.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.