Brocade Network Advisor SAN User Manual v12.1.0 - Manual (Page 1087)

1040 Brocade Network Advisor SAN User Manual
53-1002948-01
Flow Vision features
30
SIM ports
To ensure that test flows are not unintentionally transmitted to real devices, Flow Vision requires
that you enable the source device and destination device ports in simulated (SIM port) mode
before activating the test flows, and the application checks for this setting before activating the test
flows. Setting the port to “SIM Port” sets an internal loopback on the port and creates a filter which
discards all incoming Flow Generator frames.
On a switch that has live traffic passing through E_Ports or long distance ports, Flow Generator
allows you to enable and disable SIM ports that are on the same ASIC as those active ports. Flow
Generator can also activate and deactivate the artificial traffic, allowing you to verify the impact of
the testing flow on existing traffic.
Prior to creating and activating flows, use the steps under “Enabling and disabling SIM ports” on
page 1041 to set the source device and destination device ports as SIM ports.
Attributes of a SIM-port are as follows:
• Simulates an F_Port on the switch. A SIM port simulates a fabric device using the port WWN or
virtual WWN. It is added into the name server database and can be part of a zoning database
(needed for learning mode).
• Flow Generator generates traffic matching the flow definition on the SIM port. Traffic is
generated between the local or remote ports at the speed configured on the source SIM port.
• Supported on ASICs that support either 8- or 16-Gbps-capable Fibre Channel ports.
• Cannot be on the base switch or an Access Gateway switch.
• A SIM port can only be configured on a vacant F_Port (U_Port). The port has to either be in a
“port disabled” status or not connected at the time it is identified as a SIM port.
• A SIM port cannot be configured as any of the following port types; these restrictions also apply
at the time a SIM port is enabled.
- A port running Encryption or Compression
- D_Port
- EX_Port
- F_Port Trunked
- Fastwrite port
- FCoE port
- ICL port
- L_Port
- Mirror Port (M_Port)
- VE_Port
- VEX_Port
- GigE port
• The following features of a SIM port are persistent across a reboot:
- Each SIM port is assigned a PID.
- Each SIM port is assigned the Switch PWWN as its PWWN.
- Each SIM port registers itself into Name Server database.