Specifications

Certified FCIP Vendor Products
83Continuous Access and Data Replication Manager SAN Extensions Reference Guide
— There are duplicate (matching) zone names within the active zonesets of
each fabric, but the zones contain different zone members.
■ Upon fabric segregation, the following actions must be taken to reinitiate the
zone merge:
— The zone member mismatch causing the failure must be corrected by
either removing the mismatched zones from the active zonesets or by
matching the zone members within the duplicate zones in each separate
fabric.
— One of the following four actions must be taken to join the segregated
fabrics into a single fabric:
• Disconnect and then reconnect the WAN link (virtual ISL).
• Disable the WAN Network Module, and then re-enable.
• Reset the FCIP Network Module.
• Reboot the EdgeSwitch.
Note: Bullets 1, 2, and 4 will interrupt traffic running across the WAN link. Bullet 3 will
cause an interrupt to local SAN traffic routed through the FCIP Network Module ports.
■ The EdgeSwitch helps FCIP applications avoid fragmentation by offering a
configurable MTU size and support for Ethernet Jumbo Frames. However, in
order to transport 2K Fibre Channel frame sizes over Gigabit Ethernet using
FCIP, Ethernet Jumbo Frames must be supported end-to-end across the IP
network. If the IP network is configured to the standard Ethernet MTU size of
1518 bytes, then the maximum Fibre Channel frame size needs to be
configured to be less than 1500 bytes. For these environments, a 1-K Fibre
Channel frame size is recommended.
■ Fibre Channel interoperability:
— Credit support—The EdgeSwitch currently supports a maximum of 16
credits through the fabric for flow control on the local SAN side of the
FCIP application. Any HBA that supports greater than 16 credits should
be configured to use a maximum of 16 credits.
— B-series switches—Some proprietary fabric services are not supported.
To interoperate with B-series switches, take the following steps:
• Set the domain IDs used for the FCIP Network Module should be set
within a range of 97 to 127 (0x61 to 0x7F in hex).