Re: Basic QoS config

Hi

Without labbing this up, it looks to me like method 1 does two things,
restricts snmp traffic to 256k and restricts total bandwidth to 512k.
Method 2 restricts snmp traffic to 256k, but doesn't control total traffic
(i.e any other types of traffic).

Therefore i will say, because your question was about restricting snmp
traffic ONLY, both methods meet the requirement as there are no
requirements about total traffic not exceeding 512k.

On Sun, Mar 10, 2013 at 11:43 AM, Sarad <tosara_at_gmail.com> wrote:

> Hi Guys,
>
> I came up with the bellow doubt in my mind while labing some QoS stuff,
> appreciate if you can share your opinion on this
> R1 & R2 connected with a 512 Kbps link, We need to gurantee snmp will get
> 256Kbps in a congested scenario. Between two methods bellow what do you
> think most appropriate method? Issue I see with method 2 is bandwidth
> command on the interface will not limit the traffic as a result traffic can
> go up to the physical interface rate. So I believe option 1 is more
> accurate. Please let me know what your openion on this.
>
>
>
> *Methos 1*
>
> access-list extended SMTP_TO_SERVER
> permit tcp any host any eq smtp
>
>
> class-map match-all SMTP_TO_SERVER
> match access-group name SMTP_TO_SERVER
>
> *policy-map CBWFQ
> class class-default
> shape-average 512000
> class SMTP_TO_SERVER
> bandwidth 256
> *
> interface Serial0/0/0
> bandwidth 512
> service-policy output CBWFQ
>
>
>
> interface Serial0/0/0
> bandwidth 512
> service-policy output CBWFQ
>
>
>
> ---------------------------------------------------------------------------------------
> *Method 2*
>
> interface Serial0/0/0
> bandwidth 512
> service-policy output CBWFQ
> ip access-list extended SMTP_TO_SERVER
> permit tcp any host any eq smtp
>
>
> class-map match-all SMTP_TO_SERVER
> match access-group name SMTP_TO_SERVER
>
> *policy-map CBWFQ
> class SMTP_TO_SERVER
> bandwidth 256*
>
> interface Serial0/0/0
> bandwidth 512
> service-policy output CBWFQ
>
> Thanks
> Sara
>
>
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Received on Wed Mar 13 2013 - 15:07:31 ART