User's Manual

Table Of Contents

Egress queue control

See also Output queue diagram.

Fig. 7.28: Menu Switch settings - Egress queue

Port name

Identification of the internal switch port. The switch ports are connected to an ex-

ternal port or to an internal device (radio modem, management CPU).

The external port (with RJ45 interface) labeled "ETH1+POE". Port 2.

The external port (with SFP interface) labeled "ETH2". Port 4.

The internal port to management CPU. It is physical port number 5.

The internal port to radio modem, i.e. link to the peer unit. Port 6.

Eth1

Eth2

CPU

Air

Scheduling

mode

Port's Scheduling mode.

The device supports strict priority, weighted round robin, or a mixture on a per

egress port selection basis.

In the strict priority scheme all top priority frames egress for a port until that priority’s

queue is empty, then the next lower priority queue’s frames egress, etc. This ap-

proach can cause the lower priorities to be starved out preventing them from

transmitting any frames but also ensures that all high priority frames egress the

switch as soon as possible.

In the weighted scheme an 8, 4, 2, 1 weighting is applied to the four priorities unless

an alternate weighting is programmed into the QoS Weights Table. This approach

prevents the lower priority frames from being starved out with only a slight delay

to the higher priority frames.

Configuration