01-09-2018 11:06 AM - edited 03-08-2019 01:21 PM
Hello,
Does anyone know how to trust the QOS markings on a Nexus C93108TC-EX trunk port? I am running these commands on my IOS switches, but can't figure out how to do the same on my Nexus Core switch. Any help would be much appreciated.
auto qos trust
mls qos trust dscp
Solved! Go to Solution.
01-10-2018 05:55 AM
Hi there,
Nexus 9000s trust all QoS Markings by default, thus, there are no additional configurations you need to add to forward the traffic marked.
This is documented in the N9K QoS Configuration Guide: "The default behavior of the device is to preserve the DSCP value or to trust DSCP. To make the port untrusted, change the DSCP value. Unless you configure a QoS policy and attach that policy to specified interfaces, the DSCP value is preserved." As well as "By default, all Ethernet interfaces are trusted interfaces. A packet tagged with an 802.1p class of service (CoS) value is classified into a system class using the value in the packet."
Hope that helps.
- Andrea
01-10-2018 05:55 AM
Hi there,
Nexus 9000s trust all QoS Markings by default, thus, there are no additional configurations you need to add to forward the traffic marked.
This is documented in the N9K QoS Configuration Guide: "The default behavior of the device is to preserve the DSCP value or to trust DSCP. To make the port untrusted, change the DSCP value. Unless you configure a QoS policy and attach that policy to specified interfaces, the DSCP value is preserved." As well as "By default, all Ethernet interfaces are trusted interfaces. A packet tagged with an 802.1p class of service (CoS) value is classified into a system class using the value in the packet."
Hope that helps.
- Andrea
01-10-2018 07:38 AM
Thanks Ms. Andrea. Yes, that is helpful.
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