Deployment Guide

Fabric OS v7.3.0a Release Notes v2.0 Page 44 of 55
 FOS v7.3.0 does not support credit recovery on BI ports on Brocade 7840.
 Running offline diagnostic tests results in FCIP tunnels down. Reboot the switch after offline
diagnostic tests to recover the tunnels.
FCoE/DCB/CEE (FCOE10-24)
 When upgrading a DCX/DCX-4S with one or more FCOE10-24 blades from FOS v6.x to FOS v7.0.0 or
later, the user should carefully review Chapter 5 of the FOS v7.0.0 Converged Enhanced Ethernet
Administrator’s Guide.
 Ethernet L2 traffic with xSTP Hello timer set to less than or equal to 3 seconds may experience
momentary traffic disruption during HA failover.
 Hot plugging a CP with firmware level less than FOS v6.3.0 into a DCX or DCX-4S with an active
FCOE10-24 blade will result in the new standby CP not coming up.
 When operating in Converged Mode, tagged traffic on the native VLAN of the switch interface is
processed normally. The host should be configured not to send VLAN tagged traffic on the switch’s
native VLAN.
 When operating in Converged Mode, tagged frames coming with a VLAN tag equal to the configured
native VLAN are dropped.
 The Converged Network Adapter (CNA) may lose connectivity to the FCOE10-24 if the CNA interface is
toggled repeatedly over time. This issue is related to the CNA and rebooting the CNA restores
connectivity.
 The FCOE10-24 support only one CEE map on all interfaces connected to CNAs. Additionally, CEE map
is not recommended for use with non-FCoE traffic. QoS commands are recommended for interfaces
carrying non-FCoE traffic.
 Before upgrading to FOS v6.4.1_fcoe/v6.4.1_fcoe1/v7.0.0 or later, if the CEE map “default” value
already exists, the same “default” value is preserved after upgrading to FOS
v6.4.1_fcoe/v6.4.1_fcoe1/v7.0.0 or later. However, if the CEE map “default” is not configured before
upgrading to FOS v6.4.1_fcoe/v6.4.1_fcoe1/v7.0.0 or later, then after upgrading to FOS
v6.4.1_fcoe/v6.4.1_fcoe1/v7.0.0 or later, the following CEE map “default” will be created
automatically:
cee-map default
priority-group-table 1 weight 40 pfc
priority-group-table 2 weight 60
priority-table 2 2 2 1 2 2 2 2
 When upgrading from FOS v6.3.x or v6.4.x to FOS v6.4.1_fcoe/v6.4.1_fcoe1/v7.0.0 or later, the CEE
start up configuration dcf.conf file will be incompatible with the FCoE provisioning changes
implemented in v6.4.1_fcoe and later releases. Users can save the dcf.conf file as a backup and
apply it once the firmware upgrade is completed to get the DCX/DCX-4S to the same startup
configuration as in the older release.
 It is recommended that Spanning Tree Protocol and its variants be disabled on CEE interfaces that are
connected to an FCoE device.
 The Fabric Provided MAC Address (FPMA) and the Fibre Channel Identifier (FCID) assigned to a
VN_Port cannot be associated with any single front-end CEE port on which the FLOGI was received.
 LLDP neighbor information may be released before the timer expires when DCBX is enabled on a CEE
interface. This occurs only when the CEE interface state changes from active to any other state.
When the DCBX is not enabled, the neighbor information is not released until the timer expires,
irrespective of the interface state.