Dell POWEREDGE M1000E - Manual (Page 594)

594 Fabric OS Administrator’s Guide
53-1002745-02
LSAN zone configuration
24
Setting the maximum LSAN count
You can set the maximum number of LSAN zones, or LSAN count, that can be configured on the
edge fabrics. By default, the maximum LSAN count is set to 3000. You can increase the maximum
LSAN count to 5000 without disabling the switch.
The maximum number of LSAN devices supported is 10,000 (this includes both physical and proxy
devices). If you have 3000 LSAN zones but have not exceeded the 10,000 device limit, you can
increase the LSAN count to 5000.
All FC routers in the same backbone fabric should have the same maximum LSAN count defined, to
prevent the FC routers from running into indefinite state. Asymmetric LSAN configurations due to
different maximum LSAN counts could lead to different devices being imported on different FC
routers.
1. Enter the fcrlsancount command with no parameters to display the current LSAN limit.
switch:admin> fcrlsancount
LSAN Zone Limit 3000
2. Enter the fcrlsancount command and specify the new LSAN zone limit.
switch:admin> fcrlsancount 5000
LSAN Zone Limit 5000
For information on how to display the maximum allowed and currently used LSAN zones and
devices, refer to
“Resource monitoring” on page 604.
NOTE
Because the maximum number of LSANs is configured for each switch, if there is a different
maximum LSAN count on the switches throughout the metaSAN, then the device import/export will
not be identical on the FC routers. You should enter the same maximum LSAN count for all the FC
routers in the same backbone that support this feature. Verify the configured maximum limit against
the LSANs configured using the fcrResourceShow command.
HA and downgrade considerations for LSAN zones
Be aware of how LSAN zones impact high availability and firmware downgrades:
• The LSAN zone matrix is synchronized to the standby CP.
• On a dual CP switch, both CPs must have Fabric OS v5.3.0 or later to enable the feature.
• If the feature is enabled on the active CP, introducing a CP with an earlier version of Fabric OS
as a standby will cause HA synchronization to fail.
• If the feature is enabled, before downgrading to an earlier Fabric OS version, you will be asked
to go back to the default mode.
• This feature does not have any impact on current HA functionality. LSANs will be synchronized
as usual after the limit is increased and new LSANs are created.
LSAN zone policies using LSAN tagging
You can create tags for LSAN zones to give them a special meaning.
LSAN zones are zones with names that start with the “lsan_” prefix. You can specify a tag to
append to this prefix that causes the LSAN zone to be treated differently.