Dell PowerEdge M420 8/4 Gbps FC SAN Module Administrator's Guide - Page 35

Enabling and disabling Failover for a port group, Adding a preferred secondary external port (N_Port)

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Failover 3 Enabling and disabling Failover for a port group Failover policy can be enabled on a port group. To enable or disable use the following steps to enable or disable failover on all the external ports (N_Ports) belonging to the same port group. 1. Connect to the FC SAN Module and log in using an account assigned to the admin role. 2. Enter the ag --failoverenable -pg pgid command to enable failover. switch:admin> ag --failoverenable -pg 3 Failover policy is enabled for port group 3 3. Enter the ag --failoverdisable -pg pgid command to disable failover. switch:admin> ag --failoverdisable -pg 3 Failover policy is disabled for port group 3 Adding a preferred secondary external port (N_Port) Internal ports (F_Ports) automatically fail over to any available external port. Alternatively, you can specify a preferred secondary external port for mapping in case the primary external port has failed. The internal ports must have a primary external port mapping before a secondary external port can be configured. 1. Connect to the FC SAN Module and log in using an account assigned to the admin role. 2. Enter the ag --prefset command with the "F_Port1;F_Port2; ..." N_Port operands to add the preferred secondary internal ports to the specified external port. The internal ports must be enclosed in quotation marks and the port numbers must be separated by a semicolon, for example: switch:admin> ag --prefset "3;9" 4 Preferred N_Port is set successfully for the F_Port[s] NOTE Preferred mapping is not allowed when login balancing mode is enabled for a port group, so there is no preferred secondary external port. All external ports are the same when login balancing is enabled. Deleting internal ports from a preferred secondary external port 1. Connect to the FC SAN Module and log in using an account assigned to the admin role. 2. Enter the ag --prefdel command with the "F_Port1;F_Port2;..." External port (N_Port) operands to delete internal ports (F_Ports) from an external port. The list of internal ports must be enclosed in quotation marks. Port numbers must be separated by a semicolon. In the following example, internal ports 3 and 9 are deleted from preferred secondary external port 4. switch:admin> ag --prefdel "3;9" 4 Preferred N_Port is deleted successfully for the F_Port[s] Dell 8/4Gbps FC SAN Module Administrator's Guide 21 53-1001345-01

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Dell 8/4Gbps FC SAN Module Administrator’s Guide
21
53-1001345-01
Failover
3
Enabling and disabling Failover for a port group
Failover policy can be enabled on a port group. To enable or disable use the following steps to
enable or disable failover on all the external ports (N_Ports) belonging to the same port group.
1.
Connect to the FC SAN Module and log in using an account assigned to the admin role.
2.
Enter the
ag
--
failoverenable -pg
pgid
command to enable failover.
switch:admin>
ag --failoverenable -pg 3
Failover policy is enabled for port group 3
3.
Enter the
ag
--
failoverdisable -pg
pgid
command to disable failover.
switch:admin>
ag --failoverdisable -pg 3
Failover policy is disabled for port group 3
Adding a preferred secondary external port (N_Port)
Internal ports (F_Ports) automatically fail over to any available external port. Alternatively, you can
specify a preferred secondary external port for mapping in case the primary external port has
failed. The internal ports must have a primary external port mapping before a secondary external
port can be configured.
1.
Connect to the FC SAN Module and log in using an account assigned to the admin role.
2.
Enter the
ag
--
prefset
command with the “
F_Port1;F_Port2; ...” N_Port
operands to add the
preferred secondary internal ports to the specified external port.
The internal ports must be enclosed in quotation marks and the port numbers must be
separated by a semicolon, for example:
switch:admin>
ag --prefset "3;9" 4
Preferred N_Port is set successfully for the F_Port[s]
NOTE
Preferred mapping is not allowed when login balancing mode is enabled for a port group, so there
is no preferred secondary external port. All external ports are the same when login balancing is
enabled.
Deleting internal ports from a preferred secondary external port
1.
Connect to the FC SAN Module and log in using an account assigned to the admin role.
2.
Enter the
ag
--
prefdel
command with the "F_Port1;F_Port2;..." External port (N_Port)
operands to delete internal ports (F_Ports) from an external port.
The list of internal ports must be enclosed in quotation marks. Port numbers must be
separated by a semicolon. In the following example, internal ports 3 and 9 are deleted from
preferred secondary external port 4.
switch:admin>
ag --prefdel
"3;9" 4
Preferred N_Port is deleted successfully for the F_Port[s]