Class of service (cos), Egress queues, Ingress classification – Znyx Networks bh5700 User Manual

Page 105

Advertising
background image

cp /etc/rcZ.d/examples/gated.conf.rip1 /etc/rcZ.d

Or for RIP2:

cp /etc/rcZ.d/examples/S55gatedRip2 /etc/rcZ.d

cp /etc/rcZ.d/examples/gated.conf.rip2 /etc/rcZ.d

Or for OSPF:

cp /etc/rcZ.d/examples/S55gatedOspf /etc/rcZ.d

cp /etc/rcZ.d/examples/gated.conf.ospf /etc/rcZ.d

Open and make configuration changes to the listed

c o n f

file to coincide with the current

Layer 3 configuration (that is, adjust IP addresses and number of interfaces available).
See GateD documentation if you have questions regarding the

c o n f

file.

Run the OpenArchitect zsync command to save your changes. Be sure your changes are
correct.

zsync

Reboot the switch. After rebooting, your switch operates as a Layer 3 switch with GateD
routing.

Class of Service (COS)

This following section provides information on using the ZNYX Networks OpenArchitect switch
to provide Class of Service (COS) support. The switching fabric architecture defines the scope of
the COS parameters. Some apply to an individual port, some apply to a group of ports (known as
a block) and others apply to the whole switch. It is important for the user to understand the scope
of the parameters to ensure that the expected behavior occurs.

Egress Queues

The base switch provides 1 to 8 COS queues per egress port, and for packets destined to the CPU
from the switching fabric. By default, a freshly booted OpenArchitect switch has a single queue
per egress port (and the CPU).

Ingress Classification

Incoming packets are mapped to queues based on their priority tags. The built-in behavior of the
base switch uses the 802.1p tag within a packet as the queue selector. There is one COS to queue
selector map per port.

By using the Linux iptables utility and zfilterd with ztmd, the queue selection can be
based on any information in the first 64 bytes of the IP packet header. The default OpenArchitect
switch behavior has all COS values mapping to a single queue on each of the egress ports.

Ethernet Switch Blade User's Guide

release 3.2.2j

page 105

Advertising