From: Donny MATEO (donny.mateo@sg.ca-indosuez.com)
Date: Wed Oct 08 2003 - 04:33:53 GMT-3
I'll probably pick the second one for the sake of making sure that VLANA
traffic should be limited to 5mbps and not more at any time.
Shape will enforce queuing mechanism, thus it's possible for VLAN A to
send more than 5mbps for a short period of time as the excess traffic
would get buffered in the queue and ultimately delivered. One can argue
that the actual physical bandwidth usage will stay below 5mbp, which is
true. So this could be a valid solutions provided the intention of the
question writer is just to make sure the bandwidth interface should be
limited to 5mbp. However I read the requirement below a bit different, it
specifically say to limit VLAN A traffic to 5 mbps (as oppose to limit
physical bandwidth used by VLAN A to 5mbp which would make option 1 and 2
valid), and that means police.
But then again it really depens on how you read the question, you might
read it differently then I did.
Donny
#11189
Hunt Lee <hunt_lee@bigpond.net.au>
Sent by: nobody@groupstudy.com
10/08/2003 10:05 AM
Please respond to Hunt Lee
To: ccielab@groupstudy.com
cc: (bcc: Donny MATEO/ADPC/ASIA/BANQUE_INDOSUEZ/FR)
Subject: Which one should I pick ?
If I have a question:
Configure CBWFQ on R1's Ethernet interface such that it allocates min
bandwidth of 3mbps for VLANA. VLANA traffic should limit to 5mbps and
cannot utilize more physical bandwidth during non-congestion period.
Should I use:
policy-map cbwfq
class VLAND
bandwidth 3000
shape peak 5000000
OR
policy-map cbwfq
class VLAND
bandwidth 3000
police 5000000 937500 1875000 conform-action transmit exceed-action drop
violate-action drop
And if you could give me reasoning on why you pick that one, it would be
greatly appreciated.
Thank you so much in advance,
H.
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