HP 316095-B21 FW 08.01.00 McDATA EFCM Basic User Manual (620-000240-000, Novem - Page 65
Preferred Domain ID, Switch Speed, Gb/sec, ISL FSPF Cost Configuration, By Port Speed
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Configuring Switch Information 3 congestion and disrupt devices. With zone FlexPars enabled, RSCNs are limited to devices that are impacted by a zoning change. 9. At the Preferred Domain ID field, type a value of 1 through 31. The domain ID uniquely identifies each product in a fabric. NOTE: If the product is attached to a fabric element, the product and element must have unique domain IDs. If the values are not unique, the E_Port connection to the element cannot carry traffic and the product cannot communicate with the fabric. 10. At the Switch Speed field, select 1 Gb/sec or 2 Gb/sec. This specifies the speed used on the switch. This field is valid only for 64-Port Directors that are able to run at both speeds. 11. At the ISL FSPF Cost Configuration field, select By Port Speed or Ignore Port Speed to configure ISL FSPF cost functionality. This parameter configures the FSPF cost of ISLs on the switch. Cost is a metric assigned to ISLs by the product's Path Selection functionality. Cost is used to determine the shortest path (or the path which would take the least amount of time for traffic to travel) to a destination. A path with a lower cost is considered to be faster than a path with a higher cost. You can specify the following options for this parameter: • By Port Speed-When selected, the value of the FSPF cost for each port depends on the speed of the port. In this case, the cost is inversely proportional to the bit rate of the ISL. The higher the bit rate, the lower the cost. When this option is specified, the speed of the ISL is a factor in determining the shortest path. • Ignore Port Speed-When selected, every ISL on the switch has the same FSPF cost. If Ignore Port Speed is specified, the number of hops is the primary factor in determining the shortest path; the speed of the ISL is not considered. Select Ignore Port Speed for this parameter, if you want parallel ISLs of different speeds to be considered equally as paths for traffic. TIP: It is recommended that all the switches in the fabric be configured to have the same value for the ISL FSPF Cost Configuration parameter. Configuring the Product 3-13