04-21-2022 11:12 PM
Apologies for sounding like a complete idiot, but I suspect I am one. Is anyone able to provide any insight on how qos-groups are defined on the N9K.
I am trying to follow how queuing works, and I can get as far as the following ( not all output shown)
SDC-CORE-RB-01# sh policy-map int eth1/1
Global statistics status : enabled
Ethernet1/1
Service-policy (queuing) output: default-8q-out-policy
SNMP Policy Index: 301991314
Class-map (queuing): c-out-8q-q7 (match-any)
priority level 1
queue dropped pkts : 0
queue depth in bytes : 0
SDC-CORE-RB-01# show class-map type queuing c-out-8q-q7
Type queuing class-maps
========================
class-map type queuing match-any c-out-8q-q7
Description: Classifier for Egress queue 7
match qos-group 7
My problem is I cannot find any reference to "qos-group 7" In an IOS-XE world the match command would relate to a ACL or dscp setting or similar.
If anyone could point me in the right direction it would be greatly appreciated
Thanks for time in advance
04-21-2022 11:59 PM
Hello,
not sure if this helps a lot (and you might have seen this document before), but it looks like qos group 7 is system-defined in 8q mode.
04-25-2022 03:46 PM
Thanks Georg, i will review today and get back.
04-22-2022 02:39 AM
Hi,
Following what has already been written, try to read the following pages in the attached article, you may find it interesting,
page 18 - 8 Class Queuing Model
page 56 - Life of a Packet in Cloud Scale ASIC
page 58 - Nexus 9000 QoS Configuration Model
page 59 - Ingress QOS / Egress Queuing Policies
page 60 - Putting it all together
page 115 - Classification & Marking: Nexus 9000
page 129 - CoS to Queue Mapping - Nexus 9000
page 130 - Egress Queuing Configuration: Nexus9000
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKDCN-3346.pdf
04-25-2022 03:45 PM
Thanks for the replay PMAN, I will review the document today.
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