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Dell PowerEdge M420 8/4 Gbps FC SAN Module Administrator's Guide - Page 37

Enabling and disabling Failback on an external port (N_Port), ag --failbackshow 13

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Failback 3 Example 3 Blade Servers Blade_1 Blade_2 Blade_3 FC SAN Module F_1 N_1 F_2 N_2 F_3 Blade_4 F_4 N_3 Blade_5 F_5 N_4 Blade_6 F_6 Edge Switch (Switch_A) F_A1 NPIV enabled F_A2 NPIV enabled Edge Switch (Switch_B) F_B1 NPIV enabled F_B2 NPIV enabled Fabric Blade_7 F_7 Blade_8 F_8 FIGURE 6 Failback behavior Legend Physical connection Mapped online Failover route online Original mapped route (offline) Enabling and disabling Failback on an external port (N_Port) Use the following steps to enable or disable Failback on external ports. 1. Connect to the FC SAN Module and log in using an account assigned to the admin role. 2. Enter the ag --failbackshow n_portnumber command to display the failover setting. switch:admin> ag --failbackshow 13 Failback on N_Port 13 is not supported 3. Use the following commands to enable or disable Failback: • Enter the ag --failbackenable n_portnumber command to enable failback. switch:admin> ag --failbackenable 13 Failback policy is enabled for port 13 • Enter the ag --failbackdisable n_portnumber command to disable failback. switch:admin> ag --failbackdisable 13 Failback policy is disabled for port 13 Dell 8/4Gbps FC SAN Module Administrator's Guide 23 53-1001345-01

Section	Page
8/4Gbps FC SAN Module	1
How this document is organized	9
Document conventions	9
Text formatting	9
Command syntax conventions	10
Notes, cautions, and warnings	10
Notice to the reader	11
Key terms	11
Additional information	12
Industry resources	12
Getting technical help	12
In this chapter	15
NPIV overview	15
FC SAN Module port types	16
FC SAN Module limitations	16
In this chapter	17
Port state description	17
Port mapping	18
Default port mapping	19
Remapping ports	19
Removing internal ports (F_Ports) from external ports (N_Ports)	20
In this chapter	21
Policies overview	21
Displaying current policies	21
FC SAN Module policy enforcement matrix	22
Advanced Device Security policy	22
How the ADS policy works	22
Enabling and disabling the Advanced Device Security policy	22
Setting the list of devices allowed to log in	23
Setting the list of devices not allowed to log in	23
Removing devices from the list of allowed devices	23
Adding new devices to the list of allowed devices	24
Displaying the list of allowed devices on the FC SAN Module	24
ADS policy considerations	25
Automatic Port Configuration policy	25
How the APC policy works	25
Enabling and disabling the APC policy	25
Enabling APC policy	25
Disabling APC policy	25
Automatic Port Configuration policy considerations	26
Port Grouping policy	26
How port groups work	26
Adding an external port (N_Port) to a port group	27
Deleting an external port (N_Port) from a port group	28
Removing a port group	28
Renaming a port group	28
Disabling the Port Grouping policy	29
Port Grouping policy modes	29
Creating a port group and enabling login balancing mode	29
Rebalancing internal ports (F_Ports)	30
Enabling Managed Fabric Name Monitoring mode	31
Disabling Managed Fabric Name Monitoring mode	31
Displaying the current fabric name monitoring timeout value	31
Setting the current fabric name monitoring timeout value	31
Port Grouping policy considerations	32
Failover	32
Failover configurations	33
Enabling and disabling Failover on an external port (N_Port)	34
Enabling and disabling Failover for a port group	35
Adding a preferred secondary external port (N_Port)	35
Deleting internal ports from a preferred secondary external port	35
Failback	36
Failback configurations in the FC SAN Module	36
Enabling and disabling Failback on an external port (N_Port)	37
Enabling and disabling Failback for a port group	38
In this chapter	39
Connectivity of multiple devices overview	39
Fabric and Edge switch configuration	39
Verifying the switch mode	40
Enabling NPIV on M-EOS switches	41
Connectivity to Cisco Fabrics	41
Enabling NPIV on a Cisco switch	41
Understanding role-based access control	45
Understanding Virtual Fabric restrictions	46
Understanding Admin Domain restrictions	47
Using the command line interface	47
Commands	48
configUpload	48
configDownload	51
firmwareDownload	56
firmwareDownloadStatus	61
firmwareShow	63
licenseShow	64
licenseAdd	65
portCfgShow	66
portCfgSpeed	70
portShow	71
supportSave	75
supportShow	77
version	79