User guide

• Connecting HP 2408 24-10 GbE w/8-8 Gbps FC Base FCoE Switch to an FCR-capable switch
with fcrbcast config enabled causes a storm of broadcast traffic resulting in termination of
iswitchd.
• When rebooting an HP StorageWorks DC SAN Backbone Director Switch or HP StorageWorks
DC04 SAN Director Switch with an HP DC SAN Director 10/24 FCOE Blade, Qlogic CNA
and LSAN zoning, the switch becomes very unresponsive for a period of time. This is due to
the CNA sending excessive MS queries to the switch.
• The HP 2408 24-10 GbE w/8-8 Gbps FC Base FCoE Switch and HP DC SAN Director 10/24
FCOE Blade can handle 169 small FCoE frames in bursts. If you are using the HP 2408 24-10
GbE w/8-8 Gbps FC Base FCoE Switch or HP DC SAN Director 10/24 FCOE Blade, and
you delete a large number of v-ports with HCM, some of the v-ports may not appear to be
deleted. To correct this, disable and re-enable FCoE with the following CLI commands:
◦ switch:admin>fcoe –disable slot/port
◦ switch:admin>fcoe --enable slot/port
• When an HP DC SAN Director 10/24 FCOE Blade is powered off during configuration
replay, the interface specific configuration does not get applied. Later when the HP DC SAN
Director 10/24 FCOE Blade is powered on, all physical interfaces come up with default
configurations. The user can execute the copy startup-config running-config
command to apply the new configuration after powering on the HP DC SAN Director 10/24
FCOE Blade.
• When IGMP Snooping is disabled on a VLAN, all configured IGMP groups are removed from
that VLAN. You must reconfigure the IGMP groups after enabling the IGMP snooping on that
VLAN.
IMPORTANT: When upgrading from Fabric OS 6.3.x or 6.4.x to 7.0.0a or later, the CEE start
up configuration dcf.conf file is incompatible with the FCoE provisioning changes implemented
in Fabric OS 7.0.0a 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.
FCR and Integrated Routing
• With routing and dual backbone fabrics, the backbone fabric ID must be changed to keep
the IDs unique.
• When using FC Routing in a backbone to edge configuration with an Mi10K in the edge
fabric, users may experience slow throughput for hosts attached to the Mi10K. Users may
encounter this following a bounced IFL connection between the backbone and edge fabric.
This slowdown can be resolved by disabling/enabling the Mi10K ports for the hosts that are
impacted.
• Mi10K Directors operating with firmware earlier than M-EOSn 9.9.5 may experience repeated
system faults when attached as an FCR edge switch to an HP 1606 SAN Extension Switch EX
Port. To avoid this, ensure that the Mi10K is operating with M-EOSn 9.9.5 or later when in
an edge fabric that is attached to an HP 1606 SAN Extension Switch FCR Backbone.
• VEX edge to VEX edge device sharing is not supported.
• To allow Hot Code Load on HP 8/40 Base 24-ports Enabled SAN Switch when using Integrated
Routing, the edge switch connected to the HP 8/40 Base 24-ports Enabled SAN Switch must
be running Fabric OS 6.1 or later code.
Important notes and recommendations 33