Dell POWEREDGE M1000E User Manual

Page 58

Fabric OS Command Reference

53-1001764-02

failbackenable [N_Port | -pg pgid]

Enables the failback policy for a specified N_Port or for all N_Ports in the
given port group. When failback policy is enabled, ports behave as follows:

•

If only primary F_Port to N_Port mapping is in place, all F_Ports are
automatically rerouted back to the N_Ports to which they were originally
mapped as those N_Ports come back online. Only the originally mapped
F_Ports fail back. In the case of multiple N_Port failures, only F_Ports
that were mapped to the recovered N_Port experience failback. The
remaining F_Ports are not redistributed among the online N_Ports during
the failback.

•

If preferred secondary F_Port to N_Port mapping is in place, and the
primary N_Port comes back online, then the F_Ports are rerouted
through the primary N_Port. If the secondary N_Port comes online, while
the primary N_Port is still offline, F_Ports are rerouted through the
secondary N_Port.

failbackdisable [N_Port | -pg pgid]

Disables the failback policy for the specified N_Port or for all N_Ports in the
given port group.

failbackshow [N_Port]

If an N_Port is specified (optional), the command displays the failback policy
for this N_Port. Otherwise, the failover policy for all the N_Ports is displayed.
The failback policy is displayed as disabled (0) or enabled (1).

prefset "F_Port [;F_Port2;...]" N_Port

Sets the preferred secondary N_Port for one or more F_Ports. Preferred
mapping is optional. Preferred F_Port to N_Port Mapping provides an
alternate N_Port for F_Ports to come online for predictable failover and
failback. An F_Port must have primary N_Port mapping before a secondary
N_Port can be configured. The list of F_Ports to be mapped must be enclosed
in double quotation marks. Port numbers must be separated by semicolons.

prefdel "F_Port [;F_Port2;...]" N_Port

Deletes the preferred Secondary N_Port for the specified F_Ports. The list of
F_Ports to be deleted from the secondary mapping must be enclosed in
double quotation marks. Port numbers must be separated by semicolons.

prefshow

Displays the preferred Secondary N_Port for all F_Ports.

adsset "F_Port [;F_Port2;...]" "WWN [;WWN2;...]"

Sets the list of devices that are allowed to login to a specified set of F_Ports.
Devices are specified by their world wide names. Lists must be enclosed in
double quotation marks. List members must be separated by semicolons.
The maximum number of entries in the allowed device list is twice the per
port maximum login count. Replace the WWN list with an asterisk (*) to
indicate all access on the specified F_Port list. Replace the F_Port list with an
asterisk (*) to add the specified WWNs to all the F_Ports' allow lists. A blank
WWN list (““) indicates no access. ADS policy must be enabled for this
command to succeed.