ATTO Technology 1550D Benutzerhandbuch

 

ATTO Technology Inc. iPBridge Installation and Operation Manual

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 

 on page 5.

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 

5

Verify that each used Ethernet port on the 
iPBridge can be pinged from the desired host. 
Refer to 

If the host cannot ping the iPBridge port and the 
iPBridge port is properly configured, continue to 
the Local Area Network/Wide Area Network 
section, 

Verify that each port on the iPBridge can ping 
each desired host. Refer to 

the Appendix. If the iPBridge cannot ping the 
host, continue to 

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 
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.

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.

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.

Check 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 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.
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.

4

Verify that the hosts are running the 
recommended driver and firmware level for the 
iSCSI host adapter or NIC vendor.

5

Verify that the hosts and the iPBridge are using 
the same port number to communicate via 
iSCSI. The default port number for the iPBridge 
is 3260. 

6

Make sure the host adapter/NIC is configured 
to log into the iPBridge. Some iSCSI host 
adapters do not re-login upon reboot or 
unplug/replug event without marking a check 
box.