From: Serge (serge.ciscostudy@gmail.com)
Date: Wed Dec 12 2007 - 07:51:48 ART
I believe, your solution 2 is wrong (it does what you were asked to do, but
it also limits traffic from *all* users to 3Mbps).
The solution from guide limits traffic from *each* user (port) to 3Mbps
rate, without any relation to summary rate (as in your solution).
For example, if some port receives traffic at 2Mbps and other also at 2Mbps,
your solution will limit summary rate from 4Mbps to 3Mbps.
But proposed solution - won't.
HTH
Sergii
On Dec 10, 2007 9:13 PM, Athaide, Dwayne <DAthaide@eprod.com> wrote:
> Below are two scenario I ran into in my practice workbook. Please let
> me know if my solution is correct and any reason its not thanks
>
>
>
> Question states
>
> VLAN B should allow no more than 2mb total throughput. Would my
> solution still be correct? Where did they get the 250000 in Solution 1
> and 375000 in Solution 2?
>
>
>
> My solution
>
> mls qos aggregate-policer AGG 2000000 1000000 exceed-action drop
>
> !
>
> policy-map POLICE-AGG
>
> class class-default
>
> police aggregate AGG
>
>
>
> interface FastEthernet0/1
>
> switchport access vlan 12
>
> service-policy input POLICE-AGG
>
> !
>
> interface FastEthernet0/2
>
> switchport access vlan 12
>
> service-policy input POLICE-AGG
>
>
>
> Solution guide
>
> mls qos aggregate-policer VLANB 2000000 250000 exceed-action drop
>
> !
>
> class-map match-all B
>
> match vlan 12
>
> match class-map class-default
>
> !
>
> !
>
> policy-map MyQoS
>
> class B
>
> police aggregate VLANB
>
>
>
> interface FastEthernet0/1
>
> switchport access vlan 12
>
> service-policy input MYQOS!
>
> interface FastEthernet0/2
>
> switchport access vlan 12
>
> service-policy input MYQOS
>
>
>
>
>
> Question 2 : Vlan D should make sure that any speaker will not flood the
> LAN with more than 3MB of traffic at a time
>
>
>
> My solution
>
> mls qos aggregate-policer VLAND 3000000 1000000 exceed-action drop
>
> policy-map AGG
>
> class class-default
>
> police aggregate VLAND
>
>
>
> Service policy applied inbound on ports in the VLAN
>
>
>
> Solution guide
>
>
>
> policy-map VLAND
>
> class class-default
>
> police 3000000 375000 exceed-action drop
>
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