[j-nsp] CoS value of return traffic

[Ben Dale]

Hi there,

We are experiencing an issue caused by exactly this behaviour (Control traffic from the RE being automatically marked as CoS 6), and I think the current answer regarding changing the value is no.  We are currently getting around it by looping traffic back into the MX80 (using physical ports) in order to strip 802.1p off transit traffic, which is an expensive hack to say the least.

When I get some more time in the lab I'll try using lt interfaces to do the same.

Cheers,

Ben

On 18/10/2011, at 9:40 PM, wojtas at wizja.net.pl wrote:

> Hello,
> Is there a possibility to set the CoS (802.1p) value of return traffic from RE ?
> I know that You can do it for, at least , DSCP using:
> set class-of-service host-outbound traffic <dscp-code-point|forwarding-class)
> Each time I send UDP echo probes to MX80 with different CoS values , the router responds with the same pattern 100(binary). The best workaround in this case would be to set CoS values according to the particular DSCP (which is preserved in this case).
> Thanks in advance for Your help!
> 
> 
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