HP A7533A - Brocade 4Gb SAN Switch Base, Administrator'S Manual

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Fabric OS 6.2 administrator guide 361
Disabling ingress rate limiting
1. Connect to the switch and log in as admin.
2. Enter the
portCfgQos
--
resetratelimit
command.
portcfgqos --resetratelimit slot / port
where:
For example, to disable ingress rate limiting on slot 3, port 9, enter the following command:
portcfgqos --resetratelimit 3/9
QoS: SID/DID traffic prioritization
SID/DID traffic prioritization is a licensed feature that allows you to categorize the traffic flow between a
given host and target as having a high or low priority. For example, you could assign online transaction
processing (OLTP) to high priority and backup traffic to low priority.
All flows without QoS prioritization are considered medium priority.
High, medium, and low priority flows are allocated to different virtual channels (VCs). High priority flows
receive more VCs than medium priority flows, which receive more VCs than low priority flows. The virtual
channels are allocated as shown in Table 76 .
NOTE: If there is a single low priority flow to a destination ID (DID) and several medium priority flows to
that same DID, it is possible that the medium priority flows would have less bandwidth because they have
to share the medium priority VCs, whereas the low priority flow would have a separate VC.
IMPORTANT: SID/DID traffic prioritization is a licensed feature. An Adaptive Networking license must be
installed on every switch that is in the path between a given configured device pair.
QoS zones
You assign high or low priority (QoS level) using a QoS zone, 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 (WWNN or WWPN). Domain,Index
zoning is not supported.
A QoS zone has a special naming convertion, to differentiate it from a regular zone. The format of the
QoS zone name is as follows:
QOS p _ xxxxxx
where p is the priority level ( H igh or L ow) and xxxxxx is the user-defined portion of the name. For
example, the following are valid QoS zone names:
QOSH_HighPriorityTraffic
QOSL_LowPriorityZone
slot/port
The slot and port number of the F_Port or FL_Port for which you want to disable
ingress rate limiting.
Table 76 Virtual channels assigned to QoS priority
Priority Number of
VCs
VCs
assigned
High priority 5 10–14
Medium priority 4 2–5
Low priority 2 8, 9