Qos Zones; Qos Traffic Prioritization - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

QoS zones

You assign high or low priority (QoS level) using a QoS zone. A QoS zone is a special zone that indicates
the priority of the traffic flow between a given host/target pair. The members of a QoS zone are WWNs of
the host/target pairs. QoS zones can contain only WWN members. "Domain,Index" zoning is not
supported.
A QoS zone has a special name, to differentiate it from a regular zone. The format of the QoS zone name
is as follows:
QOSp_xxxxxx
where p is the priority level (High or Low) and xxxxxx is the user-defined portion of the name. For example,
the following are valid QoS zone names:
QOSH_HighPriorityTraffic
QOSL_LowPriorityZone
The switch automatically sets the priority for the "host,target" pairs specified in the zones based on the
priority level in the zone name.
For example, Figure 29
prioritization is as follows:
• Traffic between H1 and S1 is high priority.
• Traffic between H1 and S3 and between H2 and S3 is low priority.
• All other traffic is medium priority, which is the default.
H1
H2
Figure 29

QoS traffic prioritization

For this fabric, you could set up the following QoS zones:
QOSH_Zone1
QOSL_Zone3
292 Optimizing fabric behavior
shows a fabric with two hosts (H1, H2) and three targets (S1, S2, S3). The traffic
Domain 1
3
15
= Low priority
= Medium priority
= High priority
Domain 2
Members: H1, S1
Members: H1, H2, S3
Domain 3
1 9
14
13
8
16
Domain 4
S1
S2
12
7
S3