Brocade Communications Systems Network Advisor 12.3.0, User Manual

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1178 Brocade Network Advisor SAN User Manual
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Flow Generator
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FIGURE 509 Flow Generator flow structure
Flow Generator limitations
The following limitations apply specifically to Flow Generator:
•
If used on a live production system, Flow Generator traffic will compete with any existing traffic.
Consequently, E_Ports and FCIP links can become congested when using Flow Generator,
leading to throughput degradation. FCIP links are more prone to congestion than E_Ports.
•
Flow Generator is only supported on 16 Gbps-capable FC devices.
•
8 Gbps-capable FC ports cannot transmit simulated traffic; however, they can receive
simulated traffic. Therefore, source devices and ingress ports must be 16 Gbps-capable FC
ports, but destination devices and egress ports can be either 8 Gbps- or 16 Gbps-capable FC
ports.
•
The source device, ingress port, and egress port must all be local. The destination device can
be local or remote; however, if you define the destination device and egress port, both must
refer to the same destination and must be local. The source device and ingress port must refer
to the same source.
•
Flow Generator only supports four active flows per ingress port.
•
Flow Generator is not supported in Access Gateway mode, on a base switch, or across a Fibre
Channel Router (FCR) backbone fabric.
•
Frame redirection is not supported on SIM-Ports.
•
Zoning is not enforced. sources and destinations can be in different zones.
•
Flow Generator gathers source and destination pairs from the zoning database for learning
flows only at the time the flow is activated. Subsequent changes to this database will not be
registered until a flow is reactivated.
•
Flow creation is not allowed if Advanced Performance Monitor (APM) or Port Mirroring is
enabled. Similarly, APM and Port Mirroring-related operations are not allowed if any flow (active
or defined) is present on the switch.