01-06-2009 01:40 PM - edited 03-06-2019 03:16 AM
I am trying to trust the cos value for trunk port fa 0/0/0 on a 2821 router. The trunk port is on a HWIC-4ESW 4 port switch module. I have configured the port to trust cos, but when I run the command "show mls qos interface" the port state shows "untrusted".
router#show mls qos interface
FastEthernet0/0/0
trust state: not trusted
trust mode: trust cos
COS override: dis
default COS: 0
pass-through: none
Here is the interface config:
interface FastEthernet0/0/0
switchport mode trunk
duplex full
speed 100
mls qos trust cos
arp timeout 270
hold-queue 300 in
hold-queue 300 out
!
Any ideas if the port is actually trusted and passing QOS markings?
Solved! Go to Solution.
01-06-2009 10:24 PM
"mls qos trust" command does not support. But the port should put the packet with COS 4-7 into high priority queue automatically.
Please refer to the following Q&A.
01-06-2009 02:53 PM
HWIC-4-ESW does not support mls qos trust options ( cos or dscp ). These CLIs are successfullt taken giving the impression that configurations are effective .. but they are not.
01-06-2009 03:10 PM
Ok, so I can only tag the traffic on the HWIC-4-ESW on a per-port basis? There is no way for the port to trust the COS markings that are already on the traffic passing through the port?
Here is what the product page says.
802.1P QoS (Traffic Prioritization) This feature provides support for QoS based on the IEEE class of service (CoS) and port-based prioritization, allowing the switch to change the CoS settings of tagged packets on a per-port basis.
01-06-2009 10:24 PM
"mls qos trust" command does not support. But the port should put the packet with COS 4-7 into high priority queue automatically.
Please refer to the following Q&A.
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