PFC Queue Limits (Queue Depth/Size)
LAN Based Cards Queue Depths Applicable to the LAN based cards such as the ws-x6708, ws-6724, etc, these cards have hardware queues both ingress and egress, each port has limited Continue Reading →
Tag: PFC
PFC Commands
show platform hardware pfc mode – Check to see what mode with regards to installed PFC/DFC cards on Sup and line cards, where a difference in model numbers of PFC/DFC, Continue Reading →
PFC: Classification, policing and marking with MQC
The MQC (Modular QoS Command Line) for PFC enabled cards provides classifaction, policing and marking. All queueing is done on the interface, this includes queue depths, WRR bandwidth, WRED. Policing Continue Reading →
PFC Egress Flow
The following diagram shows the process of egress showing effecting commands vs. the area of concern. A 1p3qxt card has been used in the example below, the ‘xt’ in the queueing definition Continue Reading →
Using Trusted Ports
A port can be set to trust on ingress for CoS, IPP, or DSCP. ‘mls qos trust cos’ ‘mls qos trust ip-precedence’ ‘mls qos trust dscp’ using ‘mls qos trust’ will Continue Reading →
Commands applied per ASIC
The following commands effect all ports on an ASIC, when you configure one of these commands on a port, all ports connected to that ASIC will have the same command Continue Reading →
PFC Hardware QoS Queuing Interface Commands
These interface commands are for PFC QoS Queuing, such as enabling WRED, configuring CoS-to-Q mappings, queue sizes and bandwidth per queue. mls qos queue-mode mode-dscp (WS-X6708 cards only – other Continue Reading →