New and Changed Information
This table summarizes the new and changed features for the Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide and where they are documented.
|
Feature |
Description |
Changed in Release |
Where Documented |
|---|---|---|---|
|
DSCP Wildcard Mask |
Support for creating an ACL that matches or filters traffic based on a DSCP bit mask. |
7.0(3)I7(9) |
|
|
Link Layer Flow Control (LLFC) Watchdog |
Support for reacting to LLFC packets on a PFC-enabled interface by shutting the no-drop queue until a timer resets it. |
7.0(3)I7(8) |
Configuring a Link Level Flow Control Watchdog and Priority Flow Control Watchdog |
|
Enabling syslog messages to account link level pause frames. |
Support to enable syslog messages to account all the incoming global and link level pause frames. |
7.0(3)I7(8) |
Guidelines and Restrictions for Link Level Flow Control |
|
Configuring QoS Pause Buffer and Dynamic Queue Limits |
New commands to modify QoS pause buffers and dynamic queue limits across all the interfaces on Cisco Nexus 3164 switches |
7.0(3)I7(8) |
Configuring QoS Pause Buffer and Dynamic Queue Limits |
|
Enabling syslog messages to account packet drops |
Support to enable syslog messages to account packet drops on multicast queues for no-drop class. |
7.0(3)I7(8) |
Guidelines and Limitations for Priority Flow Control |
|
Write message to syslog when queue is stuck |
Support to write message to syslog when queue is stuck. |
7.0(3)I7(4) |
|
|
Drop PFC traffic and all PAUSE frames |
Support to drop PFC traffic and drop all PAUSE frames. |
7.0(3)I7(4) |
|
|
Configure PFC watchdog timers and multiplier per interface |
Support to configure PFC watchdog timers and multiplier per interface. |
7.0(3)I7(4) |
Configuring a Link Level Flow Control Watchdog and Priority Flow Control Watchdog |
|
Drop multicast/broadcast traffic on no-drop configured class |
Support to drop multicast/broadcast traffic on no-drop configured class. |
7.0(3)I7(4) |
|
|
Create log entry when PFC is received on lossy group. |
Support to create log entry when PFC is received on lossy (non-configured) group. |
7.0(3)I7(4) |
|
|
Enable log-only option for PFC |
Support for Enable log-only option for PFC. |
7.0(3)I7(4) |
Configuring a Link Level Flow Control Watchdog and Priority Flow Control Watchdog |
|
Dynamic Buffer Sharing |
Support for dynamic buffer sharing across slices. (Supported only on Cisco Nexus 93360YC-FX2, 9336C-FX2 and 93240YC-FX2) |
7.0(3)I7(4) |
Manage Dynamic Buffer Sharing |
|
Asymmetric PFC |
Support to enable NetQoS pause configuration per qos class with the pause pfc-cos cos-list receive command. |
7.0(3)I7(4) |
|
|
Micro-burst Monitoring and Detection |
Added support on Cisco Nexus 9300-FX, Cisco Nexus 9300-FX2, and Cisco Nexus N9K-C9364C switches. |
7.0(3)I7(3) |
|
|
VLAN QoS |
Added support for VLAN QoS for Cisco Nexus 9508 switch. |
7.0(3)F3(3) |
|
|
Shared Policer |
Added support for shared policer for Cisco Nexus 9508 switch. |
7.0(3)F3(3) |
|
|
Ingress queuing |
Added support for the Cisco Nexus 9636C-R and 9636Q-R line cards and the 9508-FM-R fabric module. |
7.0(3)F1(1) |
Guidelines and Limitations for Queuing and Scheduling Configuring Pause Buffer Thresholds and Queue Limit Using Ingress Queuing Policy |
|
Egress policing |
Added support for egress policing per-VLAN. |
7.0(3)I6(1) |
|
| WRED |
Added the ability to configure drop thresholds for non-ecn flows. |
7.0(3)I6(1) |
|
|
Priority Flow Control Watchdog Interval |
Added support for PFC watchdog interval to detect whether packets in a no-drop queue are being drained within a specific time period on Cisco Nexus 93180YC-FX, 93108TC-FX, and 93180LC-FX, ToR switches with Cisco Nexus 9736C-EX, 97160YC-EX, 9732C-EX, and 9732C-EXM line cards. |
7.0(3)I6(1) |
Configuring a Link Level Flow Control Watchdog and Priority Flow Control Watchdog |
|
Micro-Burst Monitoring and Detection |
Added support for micro-burst monitoring on Application Spine Engines (ASE2, ASE3) and Leaf Spine Engines (LSE). |
7.0(3)I5(1) |
|
|
AFD (Approximate Fair Dropping) |
Added support for AFD, an Active Queue Management (AQM) algorithm to avoid traffic congestion. |
7.0(3)I5(1) |
|
|
DCBXP |
Added support for the Cisco Nexus 9200 and 9300-EX Series switches. |
7.0(3)I5(1) |
|
|
DPP (Dynamic Packet Prioritization) |
Added support for DPP. DPP prioritizes a configured number of packets of every flow in a particular class of traffic to be sent out of another class of traffic that DPP is mapped to. |
7.0(3)I5(1) |
|
|
Configuring WRED on Egress Queues |
Added support for the feature on the Cisco Nexus 9508 switches and Cisco Nexus 3164Q switches. |
7.0(3)I4(5) |
|
|
Configuring a Priority Flow Control Watchdog Interval |
Added support for the feature on the Cisco Nexus 9508 switches and Cisco Nexus 3164Q switches. |
7.0(3)I4(5) |
Guidelines and Limitations for Priority Flow Control Configuring a Link Level Flow Control Watchdog and Priority Flow Control Watchdog |
|
Maximum queue occupancy support for Leaf Spine Engines (LSE) |
Added maximum queue occupancy support for Leaf Spine Engine (LSE) enabled switches. |
7.0(3)I4(4) |
Guidelines and Limitations for Queuing and Scheduling |
|
Updated alpha values for dynamic queue size |
Added updated alpha values for dynamic queue size. |
7.0(3)I4(4) |
|
|
hardware qos q-noise percent <value> command |
Added this command to tune the random noise parameter on Cisco Nexus 9200 and 9300-EX Series switches. |
7.0(3)I4(4) |
|
|
Congestion avoidance |
Added a command to allow non-ECN-capable traffic to bypass WRED thresholds. |
7.0(3)I4(2) |
|
|
DCBX support |
Changed the behavior of the no lldp tlv-select dcbxp command such that PFC mode will be disabled for interfaces on both sides of back-to-back switches. |
7.0(3)I4(2) |
|
|
Priority flow control |
Added commands to globally disable PFC on all interfaces and to configure a watchdog interval to detect whether packets in a no-drop queue are being drained within a specified time period. |
7.0(3)I4(2) |
|
|
Custom TCAM template support |
Added support to create and apply custom TCAM templates. |
7.0(3)I3(1) |
|
|
Micro-Burst Detection support |
Added support for micro-burst detection |
7.0(3)I3(1) |
|
|
DCBX support |
Added support for DCBX protocol. |
7.0(3)I3(1) |
|
|
FEX QoS configuration support |
Added support for FEX QoS configuration. |
7.0(3)I2(1) |
FEX QoS Configuration Example |
|
Label sharing support for QoS policies under VLANs |
Enables label sharing when the same QoS policy is applied on multiple VLANs. |
7.0(3)I1(2) |
|
|
100G device support |
Added support for 100G devices. |
7.0(3)I1(2) |
|
|
Enabling egress QoS |
Added support for egress QoS TCAM carving. |
7.0(3)I1(2) |
|
|
Egress policing support |
Added support to apply the policing instructions in a QoS policy map to egress packets. |
7.0(3)I1(1) |
Feedback