Quality of Service Configuration Guide, Cisco IOS XE 17.15.x (Catalyst 9300 Switches) - Configuring QoS

Publisher

Cisco

URL

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/17-15/configuration_guide/qos/b_1715_qos_9300_cg/configuring_qos.html

Published

unknown

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

Cisco website terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• On Catalyst 9300 switches running IOS XE 17.15, the default trust mode for a port is DSCP-based, falling back to CoS when the incoming packet is a pure Layer 2 packet. in context
• On Catalyst 9300 with the trust device command, if the connected peer does not match the trusted device type, both CoS and DSCP are set to 0 and any input policy does not take effect. in context

Cite this source record

APA

WarmTransfer. (2026, October 2). Quality of Service Configuration Guide, Cisco IOS XE 17.15.x (Catalyst 9300 Switches) - Configuring QoS. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-c9300-1715-qos-config-guide

BibTeX

@misc{warmtransfer-cisco-c9300-1715-qos-config-guide,
  title  = {Quality of Service Configuration Guide, Cisco IOS XE 17.15.x (Catalyst 9300 Switches) - Configuring QoS},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-c9300-1715-qos-config-guide},
  note   = {Cisco, accessed 2026-10-02}
}