HP A7533A HP StorageWorks Fabric OS 6.1.1 administrator guide (5697-0235, Dece - Page 306

2. Issue the portcfgqos --setratelimit command. portcfgqos --setratelimit [slot/]port ratelimit where: • slot/port is the slot and port number of the F_Port or FL_Port on which you want to limit traffic. • ratelimit is the maximum speed, in megabits per second (Mbps), for traffic coming from the device. The valid values are: 200, 400, 600, 800, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 5000, 6000, 7000, and 8000. For example, to set the rate limit on slot 3, port 9 to 4000 Mbps, issue the following command: portcfgqos --setratelimit 3/9 4000 To disable ingress rate limiting: 1. Connect to the switch and log in as admin. 2. Issue the portcfgqos --resetratelimit command. portcfgqos --resetratelimit [slot/]port where: slot/port is the slot and port number of the F_Port or FL_Port for which you want to disable ingress rate limiting. For example, to disable ingress rate limiting on slot 3, port 9, issue 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. 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. 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 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 (WWNN or WWPN). 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: 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. 306 Optimizing fabric behavior