From: David Duncon (david_ccie@hotmail.com)
Date: Mon Aug 09 2004 - 23:11:01 GMT-3
Hi Group,
Got a Q on DTS on 7500 VIP based platform.
When we deploy a DTS policy on a DLCI/PVC or an Interface, we got 2 options
to choose with in class-map (which will eventually go under Pmap).We can
either tied down the throughout to *the CIR* or *Be* with command *shape
average* or *shape peak* respectively. In other words we can throttle down
the target bits per second through a given PVC or an interface either to a
CIR value or Access rate in the vent of the congestion.
Consider this: I have done this example with an assumption that my Telco do
allow me to burst up to Access most of the times.)
policy-map DTS-DATA-1600
class class-default >>>>>>>>>>>>>>> For example sake , I just picked up
default class here
shape peak 1600000
shape adaptive 256000
..................................................
policy-map DTS-DATA-1600
class class-default
shape average 1600000
shape adaptive 256000
In the above example the given PVC where this policy map will be applied has
got 1600k as an Access and that is my peak rate with a CIR of 256k.
Now my Q is:
- In which way shaping algorithm kicks in in the vent of congestion on both
cases ?
- As you noted I am using the same number of bps on both peak and average
clauses application. So does the mere setting the condition as "average" &
"peak" will trick the shaping engine ?
Thanks in advance
David.
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