Virtual Fabrics Considerations; Limiting Traffic From A Particular Device; Disabling Ingress Rate Limiting; Qos: Sid/Did Traffic Prioritization - HP StoreFabric SN6500B Administrator's Manual

Virtual Fabrics considerations

If Virtual Fabrics is enabled, the rate limit configuration on a port is on a per-logical switch basis.
That is, if a port is configured to have a certain rate limit value, and the port is then moved to a
different logical switch, it would have no rate limit applied to it in the new logical switch. If that
same port is moved back to the original logical switch, it would have the original rate limit take
effect again.

Limiting traffic from a particular device

1. Connect to the switch and log in using an account with admin permissions.
2. Enter the portCfgQos --setratelimit command.
Example of setting the rate limit on slot 3, port 9 to 4000 Mbps

Disabling Ingress Rate Limiting

1. Connect to the switch and log in using an account with admin permissions.
2. Enter the portCfgQos --resetratelimit command.
Example of disabling Ingress Rate Limiting on slot 3, port 9

QoS: SID/DID traffic prioritization

SID/DID traffic prioritization allows you to categorize the traffic flow between a host and target as
having a high, medium, or low priority. Fabric OS supports two types of prioritization:
•
•
CS_CTL-based prioritization and QoS zone-based prioritization are mutually exclusive. If you enable
CS_CTL-based prioritization on F/FL_Ports, then QoS zone-based prioritization cannot be used
between any devices connected to those F/FL_Ports.
CS_CTL-based prioritization takes precedence over QoS zone-based prioritization. If you enable
CS_CTL-based prioritization on F/FL_Ports that are defined in a QoS zone, CS_CTL-based
prioritization takes precedence over the QoS zones.
Fabric OS Administrator's Guide
53-1002745-02
portcfgqos --setratelimit slot/port ratelimit
portcfgqos --setratelimit 3/9 4000
portcfgqos --resetratelimit slot/port
portcfgqos --resetratelimit 3/9
Class Specific Control (CS_CTL)-based frame prioritization
Each frame between a host and a target is assigned a specific priority, depending on the value
of the CS_CTL field in the frame header.
QoS zone-based traffic prioritization
All traffic between a host and a target is assigned a specific priority, depending on the name
you define for the QoS zone.
QoS: SID/DID traffic prioritization
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