Service Manual

Fabric OS 7.4.0a Release Notes v2.0 Page 40 of 53
FL_Port (Loop) Support
• FL_Port is not supported on FC16-32, FC16-48, FC16-64, FC8-32E, FC8-48E, Brocade 6510, Brocade
6505, Brocade 6520, or Brocade 7840.
• The FC8-48 and FC8-64 blade support attachment of loop devices.
• Virtual Fabrics must be enabled on the chassis and loop devices may only be attached to ports on a 48-
port or 64-port blade assigned to a non-Default Logical Switch operating with the default 10-bit addressing
mode (they may not be in the default Logical Switch).
• A maximum of 144 ports may be used for connectivity to loop devices in a single Logical Switch within a
chassis in 10-bit dynamic area mode on DCX-4S.
• A maximum of 112 ports may be used for connectivity to loop devices in a single Logical Switch within a
chassis in 10-bit dynamic area mode on DCX.
• Loop devices continue to be supported when attached to ports on the FC8-16, FC8-32 with no new
restrictions.
Flow Vision
• Users must not specify well known FC addresses, domain controller addresses or CUP Port ID (in FMS
mode) for either the source or the destination device field while defining flows.
• Flow Vision does not support port swap. Users must not create flows on ports that are already swapped
and users must not swap the ports on which the flows are currently defined.
• After a HA reboot, a flow generator flow can be created if the source or the destination port is F-Port. But
traffic will not be initiated. Toggling the port will enforce the restriction again to simulated ports.
• Flow Monitor does not support flows with defined LUN parameters on ingress ports on 8G platforms.
• Flow Generator traffic over VE port is supported only if no other traffic is running on any of the VE ports on
that blade or switch platform. If Flow Generator traffic is run over a VE port and production traffic is run
over another VE port, then the production traffic may be effected..
• The all F-Port learning flow sys_mon_all_fport does not support fabric mode. In a chassis with virtual fabric
enabled, this flow can only be activated for a logical switch at a time.
ICLs on DCX/DCX-4S
• If a DCX with an 8-link ICL license is connected to a DCX with a 16-link license, the DCX with the 16-link
license will report enc_out errors. The errors are harmless, but will continue to increment. These errors
will not be reported if a DCX with a 16-link license is connected to a DCX-4S with only 8-link ICL ports.
• If ICL ports are disabled on only one side of an ICL link, the enabled side may see enc_out errors.
Port Initialization
Users may observe that a port is in “Port Throttled” state when an F_Port is being initialized. This is mostly an
informational message that is shown in switchshow output indicating systematic initialization of F_Ports.
However, a port may remain in “Port Throttled” state for an extended period of time and may never come
online if it fails to negotiate speed successfully with the neighboring port. Users are advised to check the speed
setting of the neighboring switch port to determine the cause of the speed negotiation failure.
Example Output:
74 9 10 36ed40 id N8 In_Sync FC Disabled (Port Throttled)
Port Mirroring
• Port Mirroring is not supported on the Brocade 7800.