Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1790

Usage Information To honor all incoming 802.1p markings on incoming switched traffic on the interface, enter this command. By default, this facility is not enabled (that is, the 802.1p markings on incoming traffic are not honored). You can apply this command on both physical interfaces and port channels. When you set the service-class dynamic for a port channel, the physical interfaces assigned to the port channel are automatically configured; you cannot assign the service-class dynamic command to individual interfaces in a port channel. • All dot1p traffic is mapped to Queue 0 unless you enable the service-class dynamic dot1p command on an interface or globally. • Layer 2 or Layer 3 service policies supersede dot1p service classes. Use this command in Configuration Terminal Batch mode to honor the incoming 802.1p markings in a dual-homing setup. service-class wred backplane After you create a WRED profile with ECN functionality, specify per-queue granularity for backplane ports and include the WRED profile in a service class. Using this command, you can enable or disable queue-specific settings and specify minimum and maximum buffer thresholds in the WRED profile applied to each packet color-code. Also, you can specify the maximum drop rate percentage for yellow and green profiles. The perqueue profile configured is applied to all the backplane ports. C9000 Series Syntax Parameters [no] service-class wred {green | weight | yellow} {[queue0 number/ string] || [queue1 number/string] || [queue2 number/string] || [queue3 number/string] || [queue4 number/string] || [queue5 number/string] || [queue6 number/string] || [queue7 number/ string]} backplane service-class wred green weight yellow queue 0 to queue 7 number Define the mapping between the service class and policy-based QoS or routing. Specify WRED curve parameters for a queue Specify green (low) drop precedence to a queue. Specify a weight factor to a queue. Specify yellow (medium) drop precedence to a queue. Specify the queue number to which the WRED parameters apply. Enter a weight for the queue as a number in the range of 1 to 15. This parameter applies only if you specify the green or yellow drop precedence. Quality of Service (QoS) 1790