Disabling The Failover Policy; Failback Policy - Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

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Failback policy

Disabling the Failover policy

1. Connect to the switch and log in as admin.
2. Enter the ag command with the
3. Enter the ag

Failback policy

The Failback policy automatically reroutes the F_Ports back to the primary mapped N_Ports as
those N_Ports come back online, if the Failback policy is enabled for the N_Port.
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 the APC policy is enabled, by default,
the failback policy is disabled.
NOTE
The Failback policy is an N_Port parameter. By default, the Failback policy is enabled.
The following sequence describes how a failback event occurs:
•
•
•
Example: Failback Policy
In Example 3, described in
because the corresponding F_A1 port is offline. However, N_2 comes back online. See
page 15 for the original fail over scenario.
The ports F_1 and F_2 are mapped to N_1 and continue routing to N_3. Ports F_3 and F_4, which
were originally mapped to N_2, are disabled and rerouted to N_2, and then enabled.
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failover setting.
switch:admin> ag --failovershow 13
Failover on N_Port 13 is supported
failoverdisable <n_portnumber> operand to disable failover.
--
switch:admin> ag --failoverdisable 13
Failover policy is disabled for port 13
When an N_Port comes back online, with the Failback policy enabled, the F_Ports that were
originally mapped to it are disabled.
The F_Port is rerouted to the primary mapped N_Port, and then re-enabled.
The host establishes a new connection with the fabric.
Figure 5
failovershow <n_portnumber> operand to display the
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on page 17, the Access Gateway N_1 remains disabled
Figure 4
Access Gateway Administrator's Guide
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on