Re: cos behavior

Well, if switch 2 is in line with R3, then what does configuration look
like on both connection to sw1 and to r3? is mls qos enabled and mls qos
trust set on interconnect switch ports of sw2?

On Wed, Jan 4, 2012 at 7:47 AM, Hasse <eriksson.hans_at_gmail.com> wrote:

> Question is why is there an Cos0 when having R1 with cos6 and Sw1 with
> cos2,
> it does not matter if the vlan is tagged or untagged as expected.
>
>
> I am doing some testing and config.
>
> Topology
>
> R1---------
> |
> |---------SW1--------SW2-----------R3
> |
> R2---------
>
> R1
> !
> interface FastEthernet0/0.100
> encapsulation dot1Q 100 native
> ip address 10.1.1.1 255.255.255.0
> service-policy output Ecos6
> end
>
> SW1 different but trunk to R1 only the Cos that changes
>
> R3 just a verification point
> !
> interface FastEthernet0/1.100
> encapsulation dot1Q 100
> ip address 10.1.1.3 255.255.255.0
> service-policy input cos0-7
> end
>
>
>
> This is the result
>
> One
> MLS QoS enabled on switch and q-tagged vlan
> R1 always cos6 out
> R3 just verification
> SW1 diffrent config.
>
> -Sw1 cos2
> result cos0 on R3 = why?
> -Sw1 cos2 and trust cos
> result cos6 on R3 = OK
> -Sw1 cos2 and override
> result cos2 on R3 = OK
>
> Two
> MLS QoS enabled on switch and Native Vlan
> R1 always cos6 out
> R3 just verification
> SW1 diffrent config.
>
> -Sw1 cos2
> result cos0 on R3 = why?
> -Sw1 cos2 and trust cos
> result cos2 on R3 = OK
> -Sw1 cos2 and override
> result cos6 on R3 = OK
>
>
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Received on Wed Jan 04 2012 - 07:54:45 ART