HP StorageWorks Multi-protocol Router XPath OS 7.4.1e Release Notes (AV-RW5LN-TE, August 2007)

Issue
Description
Due to the various link-encapsulation methods, header sizes, and so forth, it might
be difficult to d
etermine the exact available bandwidth for a particular link. HP
recommends set
ting the bandwidth p arameter to 96% of the advertised link
bandwidth (for example, -b 96 for a 100 Mbps link).
Additional tuning of the bandwidth parameter might be nec essary for optimal
throughput.
Jumbo Frame Su
pport. Previous releases of FCIP segmented FCIP-encapsulated
FC frames into two Ethernet frames if the encapsulated FC frame would exceed
standard Ethernet maximum frame size. To improve ISL throughput and bandwidth
efficiency f
or an FCIP ISL capable of supporting jumbo Ethernet frames, this
release inc
ludes a new portCfgFcip CLI command. The parameter is -j n.
The n is set t
o 1 to enable jumbo frame transmission and 2 to d isable jumbo
frame trans
mission. This option is disabled by default.
NOTE:
The system does not attempt to verify that the link can support jumbo frames
(there is no path MTU d iscovery) . If configured to enable jumbo frame
support on a network that does not support jumbo Ethernet frames end-to-end,
the link wi
ll fail if a 2KB FC frame is sent across the FCIP ISL.
Table 8 iSCSI Gateway service
Releasing the IP address for a GbE port Releasing the IP address of a Multiprotocol Router Gigabit Ethernet port
requires setting the IP address of the port to 0.0.0.0.Forexample:
portcfgGbE 15 -i 0.0.0.0
Upon releasing the IP address, the address can be used by other ports.
iSCSI Gateway Service support
The MP Router provides iSCSI support allowing iSCSI Initiators to access
Fibre Channel based storage subsystems. For the latest information on
supported configurations limitations, see the HP StorageWorks SAN
design reference guide: h
ttp://h18000.www1.hp.com/products/
storageworks/san/documentation.html
iSCSI Multi-path
iS CSI configurations using the MP Router are not supported with
multi-path software. Windows servers using an iSCSI initiator must not
have mul t i-path sof tware installed.
Microsoft iSCSI version This release of XP ath supports Microsoft iSCSI initiator 1.06.
Table 9 XPath OS Base Operating System and Fibre Channel S ervice
Issue
Descri
ption
The configdownload
command does not restore
the previously saved
configuration.
When using the configdownload comman d to restore a previously saved configuration,
translate (xlate) domains may not restore properly when the xlate domains were created
manually.
To resolve this:
1. Identify the xlate domains that were created previously. This information can be extracted
from the configuration file that was uploaded earlier using the configupload command.
NOTE:
It is a
good practice to keep a r ecord of any xlate domains that wer e created
manually, so they will be available when needed. This eliminates the need to search
through the confi guration fi le.
2. Use the fcrxlateconfig command to m anually recreate the xlate domains.
3. Reboot the M P Router for the new domains to take effect.
Example:
fcrxlateconfig102030
Multi-protocol Router XPath OS 7.4.1e
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