From: gladston@br.ibm.com
Date: Thu Apr 28 2005 - 21:30:31 GMT-3
Trying to find a FRTS example with two pvc's under the same subinterface.
Could not find it on Vegesna, Wendell or Google. Is there any doc you are aware of with such example?
For example:
r1 has two pvc's to r2 and r3. pvc 102 and 103
Access rate on r1 is 128kbps.
Carrier provides CIR 32kbps on pvc 102 and 103
r1 should transmit 64kbps and throtle back to 32kbps when BECN are received. Do this for both pvcs
r1 should burst to AR on pvc 102
use default tc
Do you think this answer the requirement?
r1
int s0/0
encap fram
frame-relay traffic-shaping
!
int s0/0.123 mult
frame-relay interface-dlci 102
class Frame-qos-to-r2
frame-relay interface-dlci 102
class Frame-qos-to-r3
!
map-class frame-relay Frame-qos-to-r2
frame-relay cir 64000
frame-relay mincir 32000
frame-relay adaptive-shaping becn
frame-relay bc 8000 (I think this is not necessary, right?)
frame-relay be 8000
!
map-class frame-relay Frame-qos-to-r3
frame-relay cir 64000
frame-relay mincir 32000
frame-relay adaptive-shaping becn
frame-relay bc 8000 (I think this is not necessary, right?)
frame-relay be 0
Be calculation:
ar 128000 - 8 intervals --> 16000
cir 64000 - 8 intervals --> 8000
difference is be --> 8000
Now, would you burst to AR on real application in such case, considering there is two pvcs?
I am wondering this:
If not bursting to AR, the capacity of Frame Relay is not used (burst above contracted rate)
On the opposite hand, if bursting to AR on a PVC, the other PVC will experience congestion when it needs bandwidth
What do you think?
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