How is QoS handled on the NVT Phybridge FLEX24-10G (NV-FLX-024-10G) switch?

Quality of Service provides a means for network traffic to be manipulated based on priority levels defined by the Class of Service.
Class of Service priority levels are embedded within 802.1Q tags. Priority levels allow various types of traffic to be prioritized based on their importance.

WRED Group Configuration
WRED Groups are configured from Global Configuration mode. The FLEX24-10G contains three WRED groups. Each WRED Group can have its Drop Precedence Level configured for each CoS value. For example, WRED Group 1 can be modified such that traffic with a CoS and DPL value of 3 and 2 respectively, can have its drop probability configured.

Egress Port Tag Remarking
Egress Port Tag Remarking allows for the remarking of the PCP, and the DEI field within egress traffic. The FLEX24-10G supports two Tag Remarking modes: Remarked and Mapped.

Queue Policing
Up to eight queues can be configured on each of the FLEX24-10G’s interfaces. Each queue contains a limiter for each interface on the switch.

Ingress Queueing and Egress Queueing can be configured on the switch.

Configuring Port Shapers and Schedulers
Egress Port Shapers limit the amount of egress traffic that a queue can transmit on an interface.

Port DSCP Configuration
Port DSCP Configuration allows for the remarking of the DSCP field for ingress traffic.
The DSCP can be modified by two different means, Classification and Translation. Both translation and classification can be enabled on an interface at the same time.
Classification will overwrite the current DSCP value and apply a new value based on the frame's CoS and DSCP values.

Quality of Service Control Lists
The FLEX24-10G contains a single Quality of Service Control List (QCL). This single QCL can contain up to 256 Quality of Service Control Entries (QCE’s).
QCLs and QCEs are very similar in function and configuration to ACLs and ACEs. It is best to become comfortable using the switch’s context-sensitive help when configuring QCEs.

Storm Policing
Storm Policers are used to configure bandwidth restrictions either globally or on a per-interface basis. These policers are applied to a frame type (Unicast, Multicast, and Broadcast frames). Storm Policers are designed to prevent broadcast storms and only apply to frames whose VLAN ID and Destination MAC address are not present in the switch’s MAC Address Table. When a switch receives a frame whose destination MAC address is not in the Mac Address Table, the frame is flooded out with all interfaces except the one it was received on.

NOTE: All the above protocols are supported on the NVT Phybridge FLEX24-10G switch. Refer to the Admin Guide for all the advanced configurations available in the switch.

You’ll find additional resources like the Datasheet, Admin Guide, A&E spec sheet, etc on the product page here.  

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