![Basic QoS Configuration > Cisco IP Telephony Flash Cards: Weighted Random Early Detection (WRED) | Cisco Press Basic QoS Configuration > Cisco IP Telephony Flash Cards: Weighted Random Early Detection (WRED) | Cisco Press](https://www.ciscopress.com/content/images/chap06_1587201283/elementLinks/fig06.jpg)
Basic QoS Configuration > Cisco IP Telephony Flash Cards: Weighted Random Early Detection (WRED) | Cisco Press
![Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, 12.2(20)EW - Configuring QoS [Cisco Catalyst 4500 Series Switches] - Cisco Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, 12.2(20)EW - Configuring QoS [Cisco Catalyst 4500 Series Switches] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/000001-100000/90001-95000/94001-95000/94183.ps/_jcr_content/renditions/94183.jpg)
Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, 12.2(20)EW - Configuring QoS [Cisco Catalyst 4500 Series Switches] - Cisco
![Catalyst 2960 and 2960-S Software Configuration Guide, 12.2(53)SE1 - Configuring QoS [Cisco Catalyst 2960 Series Switches] - Cisco Catalyst 2960 and 2960-S Software Configuration Guide, 12.2(53)SE1 - Configuring QoS [Cisco Catalyst 2960 Series Switches] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/100001-200000/100001-110000/101001-102000/101234.ps/_jcr_content/renditions/101234.jpg)
Catalyst 2960 and 2960-S Software Configuration Guide, 12.2(53)SE1 - Configuring QoS [Cisco Catalyst 2960 Series Switches] - Cisco
![Bridging, Routing, Segmentation, and QoS Configuration Guide, Cisco IOS XE SD-WAN Releases 16.11, 16.12 - QoS on Subinterface [Cisco SD-WAN] - Cisco Bridging, Routing, Segmentation, and QoS Configuration Guide, Cisco IOS XE SD-WAN Releases 16.11, 16.12 - QoS on Subinterface [Cisco SD-WAN] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/300001-400000/360001-370000/369001-370000/369748.jpg)