Checking The Ipbridge Internal Configuration; Checking Ipbridge Ethernet Ports; Checking The Lan/Wan; Checking The Iscsi Host Adapter Or Nic - ATTO Technology iPBridge 2600 Installation And Operation Manual

Checking the iPBridge internal
configuration
Verify that the SCSI devices are mapped properly.
Check in the ATTO ExpressNAV interface or use the
routedisplay iSCSI command to show mappings. If
devices do not appear, power down the iPBridge and
power back on. Refer to
page 13, Mapping devices: iSCSI
Mapping commands on page 57.
When changing any setting on the iPBridge, the
configuration must be saved by using either the
saveConfiguration CLI command or through the
ATTO ExpressNAV Restart page.

Checking iPBridge Ethernet ports

1 Check Ethernet cable integrity. Check the
cables for solid connections. Cat5 cable can
cause connection issues with Gigabit Ethernet.
Cat6 cable is the best cabling for the iPBridge.
2 Verify the IP address, subnet mask, and
gateway are properly set on each data port on
the iPBridge for your network environment.
Refer to Getting an IP address
3 Verify that the Ethernet speed is set to auto:
invoke the get EthernetSpeed all command,
check the Ethernet page of the ATTO
ExpressNAV interface, or check the LED link
lights to determine if the Ethernet speed is
correct.
4 Determine if the iPBridge is set to get its IP
information from a DHCP server. If so, verify
that the DHCP server has available IP
addresses. Refer to
page 10.
5 Verify that each used Ethernet port on the
iPBridge can be pinged from the desired host.
Refer to Ping on page 52.
If the host cannot ping the iPBridge ports and
the iPBridge ports are properly configured,
continue to the Local Area Network/Wide Area
Network section,

Checking the LAN/WAN

page 21.
Verify that each port on the iPBridge can ping
each desired host. Refer to
the iPBridge cannot ping the host, continue to
Checking the LAN/WAN
6 If using DHCP, verify that the DHCP server is
assigning the correct IP information to the host.
7 Some older switches/hosts cannot auto
negotiate between the iPBridge and the
21
ATTO Technology Inc. iPBridge Installation and Operation Manual
Mapping devices: NDMP
on page 15 and
on page 10.
Getting an IP address
Ping on page 52. If
on page 21.
switch/host at the desired speed. You may
have to force the host/switch or the iPBridge to
the desired speed.
8 Verify that the host is logging into the iPBridge
correctly by viewing the Connections page
and determining if there a "session open"
status.
on
9 Verify that you are using the correct log in
procedure for your initiator. For example: When
connecting using the Adaptec initiator, the log
on screen requests the iPBridge iqn (iSCSI
qualified name). If left blank, Adaptec cannot
log in. Enter "iSCSI" into this field for auto iqn
discovery.
When changing any setting on the iPBridge the
configuration must be saved by using either the
saveConfiguration CLI command or through the
ATTO ExpressNAV interface.
Checking the LAN/WAN
1 Verify that the switch/switches are segmented
properly so that hosts and the iPBridge have
access to each other.
2 If there are routers involved in the setup, make
sure the IP addresses and/or MAC addresses
of the iPBridge are allowed through the router.
3 Verify that the switch can see the iPBridge on
the port(s) in question. Refer to your switch
vendor's guide for more information.

Checking the iSCSI Host Adapter or NIC

iSCSI host adapters appear as a type of Storage
Controller to the host OS, not as a standard NIC. These
on adapters usually have hardware acceleration to offload
the TCP processing from the host. Configuration of
these adapters is usually done through the vendor's
own utility and not through the OS itself.
NICs come in two types: accelerated and un-
accelerated. Accelerated NICs use some hardware to
offload some of the TCP processing from the host. Un-
accelerated NICs make the OS do all TCP processing.
on
To check the iSCSI host adapter or NIC
1 Check cable integrity. Check the cables for
solid connections. Make sure they are plugged
in properly. Inspect cable ends for broken clips
and improper wiring.
2 Verify that the iSCSI host adapter or NIC is
configured with the correct IP information.
3 If using DHCP, verify that the DHCP server is
assigning the correct IP information to the host.