HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 221)

Fabric OS 5.0.0 procedures user guide 221
Configuration recommendations
The following is recommended when configuring an interoperable fabric:
• Avoid domain ID conflicts before fabric reconfiguration. Every switch in the fabric must have a unique
domain ID.
• When you are configuring multiple switches, you should wait for a fabric reconfiguration after adding
or removing each switch.
Configuration restrictions
In interoperable fabrics, the following restrictions apply:
• Do not use Extended Edge PID mode.
• There is an architecture maximum of 31 switches.
• Domain IDs must be in the 97 to 127 value range for successful connection to McData switches. The
firmware automatically assigns a valid domain ID, if necessary, when the
interopmode
command is
enabled on the switch.
• The
fabricshow
command only shows the WWN and domain ID for McData switches. No IP
address or switch name information is provided. HP StorageWorks switches show all parameters.
• If you are managing zoning from HP StorageWorks switches, then all HP StorageWorks switches must
have at least one direct connection to another HP StorageWorks switch. For example, you cannot have
a McData switch between two HP StorageWorks switches if you are managing zoning from the HP
StorageWorks switches.
• LC IBM GBICs are not supported if they are connected to a McData ISL.
• When an HP StorageWorks switch gets a new domain ID assigned through a fabric reconfiguration,
the new domain ID is written to nonvolatile memory and the old domain ID value is overwritten. When
a McData switch gets a new domain ID assigned through a fabric reconfiguration, it keeps the original
domain ID in nonvolatile memory.
In this scenario, when the domain ID of both a McData switch and an HP StorageWorks switch are
changed via fabric reconfiguration, on the next and subsequent fabric reconfigurations, the HP
StorageWorks switch attempts to use the new ID (from the nonvolatile memory) while McData attempts
to use its old ID (from the nonvolatile memory). This situation may cause a domain ID overlap to occur
during multiple fabric reconfigurations. Domain ID overlap is not supported for HP/McData
interoperability.
• Between HP StorageWorks switches, you can connect more than one ISL when in interoperability
mode.
Zoning restrictions
The following restrictions apply to zoning in interoperable fabrics:
• When interoperability mode is in effect, the space available for the zoning database is about half the
usual size. The maximum zoning database size in interoperability mode is 1:1.8 of the native mode
zoning database size
• Only zoning by port WWN is allowed; you must use the port WWN of the device, such as
10:00:00:00:c9:28:c7:c6.
• Zone members specified by node WWN are ignored.