In McDATA Fabric mode, the McDATA 4Gb SAN Switch will display the domain IDs the same as other M-series directors and edge switches no matter which management utility is used. The valid domain ID range is 1—31 for McDATA Fabric mode.

Prior to changing from McDATA Fabric mode to Standard mode, it is recommended that the switch be isolated from the fabric (take switch offline) before making the configuration changes and all domain IDs in the fabric should be noted to avoid conflicts. Once isolated, using CLI or McDATA Web Server, change interop mode to Standard, and change the domain ID to a unique ID within the valid range of 97—127 for standard mode. It is then recommended that the Domain ID be locked to prevent conflict within the fabric. When all changes have been made and the switch has been brought back online, it should then be added into the fabric.

NOTE: Locking the domain ID prevents the principal switch from assigning a domain ID when the switch is added to the fabric. In a fabric where the principal switch is an M-series director or edge switch, this is not an issue. In a fabric where the McDATA 4Gb SAN Switch may be the principal switch, changing from McDATA Fabric mode to Standard mode without configuring the valid ID range and locking it, may result in the switch domain ID being converted to a number not within the valid range.

Table 12 lists the corresponding domain ID values for each interop mode: Standard mode and McDATA Fabric mode.

Table 12 Corresponding domain ID values by interop mode

McDATA

Standard

McDATA

Standard

McDATA

Standard

Fabric mode

mode

Fabric mode

mode

Fabric mode

mode

 

 

 

 

 

 

1

97

12

108

23

119

 

 

 

 

 

 

2

98

13

109

24

120

 

 

 

 

 

 

3

99

14

110

25

121

 

 

 

 

 

 

4

100

15

111

26

122

 

 

 

 

 

 

5

101

16

112

27

123

 

 

 

 

 

 

6

102

17

113

28

124

 

 

 

 

 

 

7

103

18

114

29

125

 

 

 

 

 

 

8

104

19

115

30

126

 

 

 

 

 

 

9

105

20

116

31

127

 

 

 

 

 

 

10

106

21

117

 

 

 

 

 

 

 

 

11

107

22

118

 

 

 

 

 

 

 

 

Fabric Device Management Interface

Fabric Device Management Interface (FDMI) provides a means to gather and display device information from the fabric, and allows FDMI capable devices to register certain information with the fabric, if FDMI is enabled. McDATA Web Server will report any and all FDMI information reported by the entry switch, if FDMI is enabled on the entry switch. To view FDMI data, FDMI must be enabled on the entry switch and on all other switches in the fabric which are to report FDMI data.

FDMI is comprised of the fabric-to-device interface and the application-to-fabric interface. The fabric-to-device interface enables a device’s management information to be registered. The application-to-fabric interface provides the framework by which an application obtains device information from the fabric. Use the FDMI HBA Entry Limit field on the Switch Properties dialog to configure the maximum number of HBAs that can be registered with a switch. If the number of HBAs exceeds the maximum number, the FDMI information for those HBAs can not be registered.

78 Managing switches