Znyx Networks bh5700 manual Zcos

zcos

NAME

zcos - class of service queue control

SYNOPSIS

zcos	[-h <hostname>] [-d <level>]
[ -u <default		priority> ]
[ -m q0,q1,q2,q3,q4,q5,q6,q7 ]
[-n	<queue length list in packets for each queue>
-b	<Reserved	space in bytes for each queue>
-s	<limit on	dynamic pool usage, in bytes>, <reset %>]

[-k PRI RR WRR DRR] [ -w <queue weight list> ] [ -g <max>,<burst> ]

[-r <guaranteed bandwidth in Kbps for each queue> [ -t <burst size list in Kbytes> ]

[-l <maximum bandwidth in Kbps for each queue> [ -t <burst size list in Kbytes> ]

[-q all qmap qinfo scheduler ] [<port list>]

DESCRIPTION

zcos provides a means to set many of the hardware features of the switch related to class of service and differentiated services processing, including scheduling and bandwidth management. The current settings can also be examined.

The OpenArchitect switch supports up to eight class of service queues for packets to be sent out each of the Ethernet ports or forwarded to the CPU. Normally, packets are placed in these queues based on their 802.1p priority for tagged packets or the default priority for the port on which they arrive. The queue destination for each priority is determined by a map. A separate map is used for each ingress port. For additional means of setting the cos queue for a packet, see the sections on filtering and traffic control.

Packets are selected from the cos queues at a port based on a scheduler, which may be configured in a variety of modes. The scheduler can provide minimum bandwidth guarantees and limit the bandwidth used for packets from each cos queue. The total egress bandwidth for a port can also be limited.

Ethernet Switch Blade User's Guide release 3.2.2j page 282