
366 SAN Multiprotocol Routing: An Introduction and Implementation
B Port Interoperability Mode: Although E_Ports typically interconnect Fibre
Channel switches, some SAN extender devices, such as Cisco's PA-FC-1G
Fibre Channel port adapter and the SN 5428-2 storage router, implement a
bridge port model to connect geographically dispersed fabrics. This model
uses B port as described in the T11 Standard FC-BB-2.
– B ports bridge Fibre Channel traffic from one E_Port to a remote E_Port
without participating in fabric-related activities such as principal switch
election, domain ID assignment, and Fibre Channel routing (FSPF). For
example, Class ...