8
Access Gateway Administrator’s Guide
53-1000605-01
Access Gateway policies
1
3. If the N_Port Failover policy is enabled, and a Preferred Secondary N_Port is specified for the
F_Port and that N_Port is online, the F-Port fails over to respective Preferred Secondary
N_Port, and then re-enables.
NOTE
The Preferred Secondary N_Port is defined per F_Port. For example, if two F_Ports are mapped
to a primary N_Port1, you can define a secondary N_Port for one of those F_Ports and not
define a secondary N_Port for the other F_Port. This is done from a perspective of a server
admin. You must determine whether you want to define a preferred secondary map for each of
the servers or just a subset of the servers.
However, if the Preferred Secondary N_Port is not online, those F_Ports are disabled.
If the Preferred Secondary N_Port is NOT set for any of the F_Ports, these F_Ports will fail-over
to other available N_Ports belonging to the same N_Port Group, and then re-enables.
4. The host establishes a new connection with the fabric.
The Path Failover policy is enabled (or enforced) during power up.
Example: Path Failover Policy
This example shows the failover behavior in a scenario where two fabric ports go offline, one after
the other.
Note that in this example we assume that no Preferred Secondary N_Port are set for
any of the F_Ports.
•
First the edge switch F_A1 port goes offline, as shown in
Figure 5
on page 9 Example 1 (left),
causing the corresponding Access Gateway N_1 port to be disabled.
The ports mapped to N_1 fail over; F_1 fails over to N_2 and F_2 fails over to N_3.
•
Next the F_A2 port goes offline, as shown in
Figure 5
on page 9 Example 2 (right), causing the
corresponding Access Gateway N_2 port to be disabled.
The ports mapped to N_2 (F_1, F_3, and F_4) fail over to N_3 and N_4. Note that the F_Ports
are evenly distributed to the remaining online N_Ports and that the F_2 did not participate in
the failover event.
Содержание Brocade BladeSystem 4/24
Страница 1: ...53 1000605 01 19 Oct 2007 Access Gateway Administrator s Guide Supporting Fabric OS v6 0 0 ...
Страница 24: ...14 Access Gateway Administrator s Guide 53 1000605 01 Access Gateway policies 1 ...
Страница 30: ...20 Access Gateway Administrator s Guide 53 1000605 01 Enabling Access Gateway mode 2 ...
Страница 34: ...24 Access Gateway Administrator s Guide 53 1000605 01 Notes on joining the switch to a fabric 3 ...
Страница 48: ...38 Access Gateway Administrator s Guide 53 1000605 01 Default Port Mapping A ...
Страница 62: ...52 Access Gateway Administrator s Guide 53 1000605 01 ...
