Concept Guide

20 Dell 8/4Gbps FC SAN Module Administrator’s Guide
53-1001345-01
Failover
3
FIGURE 5 Example 1 and 2 Failover behavior
Enabling and disabling Failover on an external port (N_Port)
Use the following steps to enable or disable failover policy on an external port.
1. Connect to the FC SAN Module and log in using an account assigned to the admin role.
2. Enter the ag
--failovershow n_portnumber command to display the failover setting.
switch:admin> ag --failovershow 13
Failover on N_Port 13 is not supported
3. Enter the ag --failoverenable n_portnumber command to enable failover.
switch:admin> ag --failoverenable 13
Failover policy is enabled for port 13
4. Enter the ag --failoverdisable n_portnumber command to disable failover.
switch:admin> ag --failoverdisable 13
Failover policy is disabled for port 13
F_A2
Blade Servers
FC SAN Module
Edge Switch
Fabric
(Switch_A)
enabled
NPIV
F_4
F_3
F_2
F_1
F_A1
enabled
NPIV
N_3
F_B1
enabled
NPIV
Blade_1
Blade_2
Blade_3
Blade_4
F_5
Blade_5
F_6
Blade_6
F_7
Blade_7
F_8
Blade_8
Edge Switch
(Switch_B)
N_4
F_B2
enabled
NPIV
N_2
Legend
Physical connection
Mapped online
Failover route online
Original mapped route
(offline)
Example 1
F_A2
Blade Servers
FC SAN Module
Edge Switch
Fabric
(Switch_A)
enabled
NPIV
F_4
F_3
F_2
F_1
N_1
F_A1
enabled
NPIV
N_3
F_B1
enabled
NPIV
Blade_1
Blade_2
Blade_3
Blade_4
F_5
Blade_5
F_6
Blade_6
F_7
Blade_7
F_8
Blade_8
Edge Switch
(Switch_B)
N_4
F_B2
enabled
NPIV
Example 2
N_2
N_1