Class Of Service; Layer 2 Queue Settings; Setting The Default Priority For Interfaces - Edge-Core ECS4810-12M Layer 2 Management Manual

Hide thumbs Also See for ECS4810-12M Layer 2:

Table of Contents

Class of Service (CoS) allows you to specify which data packets have

greater precedence when traffic is buffered in the switch due to congestion.

This switch supports CoS with eight priority queues for each port. Data

packets in a port's high-priority queue will be transmitted before those in

the lower-priority queues. You can set the default priority for each

interface, and configure the mapping of frame priority tags to the switch's

priority queues.

This chapter describes the following basic topics:

priority, queue mode, queue weight, and mapping of packets to queues

based on CoS tags.

Layer 3/4 Priority Settings

packets are processed (DSCP or CoS), and sets the per-hop behavior

and drop precedence for internal processing.

This section describes how to configure the default priority for untagged

frames, set the queue mode, set the weights assigned to each queue, and

map class of service tags to queues.

Use the Traffic > Priority > Default Priority page to specify the default port

priority for each interface on the switch. All untagged packets entering the

switch are tagged with the specified default port priority, and then sorted

into the appropriate priority queue at the output port.

"switchport priority default" on page 976

This switch provides eight priority queues for each port. It uses

Weighted Round Robin to prevent head-of-queue blockage, but can be

configured to process each queue in strict order, or use a combination

of strict and weighted queueing.

The default priority applies for an untagged frame received on a port

set to accept all frame types (i.e, receives both untagged and tagged

frames). This priority does not apply to IEEE 802.1Q VLAN tagged

– Configures each queue, including the default

– Selects the method by which inbound

Troubleshooting