Can't connect to a HP StorageWork San Switch 4/32 by ethernet port

[Cron]

Hi everybody!

We have this problem with a SW SAN Switch 4/32, we ping the ip address and it doesn't respond, we tried changing the ip address and same thing.

We don't want to reset the switch because it's in production.

There are two leds netx to the lan port, SPD and LINK, SPD is solid green, LINK is off.

We changed cables and port on the lan switch but nothing different happened.

Is there any command that could let us reset just the ethernet port in the switch without rebooting the whole switch.

Thanks,

Javier

[Marcus Schack]

If the LINK light is off, have you checked the other end of the ethernet cable? Maybe the port on the network switch is off.

[Cron]

I changed cables and port switch on the lan switch.

[Marcus Schack]

Has this connection worked before? Any changes made to the port on the SAN switch or Ethernet switch? Have you tried using a cross over LAN cable and connect a laptop to it and do a serial connection?

[Cron]

Yes it worked before. It started to failed after a Firefox session to the switch hanged.

[Marcus Schack]

Do you have the serial connection cable that came with the switch? If you do then you should be able to connect to the serial port and find out what the IP is set to. Standard switch user guide will tell you how to make the serial connection.

[Cron]

Yes, we have that cable, and we can connect to the switch by a serial connection. In fact, we could test changing the IP address, and activating DHCP instead of a fixed IP, but the problem continues.

Thanks,

Javier

[Marcus Schack]

See page 53 of the SAN Switch Installation Guide and onward on how to make the serial connection, etc. Under Setup and Install - General heading.

http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?lang=en&cc=us&contentType=SupportManual&prodTypeId=12169&prodSeriesId=454522&docIndexId=3124

[Marcus Schack]

Switches should always be set to fixed IP, DHCP is not a very good idea as the IP can change and then you cannot get to it.

[Marcus Schack]

Once you are connected to the switch via serial port, check the ethernet port characteristics, IP, Subnet, speed, online/offline etc. You may have a dead port, so you may have to log a call with HP if you have a service contract.

[krusty · Accepted solution]

There is a way to reset the ethernet port if you have root capabilities. Login as "root" and use these two commands:

ifconfig eth0 down
ifconfig eth0 up

You need to do it from the serial port, but it may save you a switch reboot.
No guarantees, but I've had it work for me in the past.

Cheers,

Curt

[Cron]

We used the commands that Curt told us and they work fine.

Thanks so much everyone, you deserve your points!

Javier

[krusty]

Love it when a plan comes together!

Curt

[Vikey]

Hi Cron,

I'm facing the same problem. I cannot access the SAN switch via ethernet port. How and where did you use the commands given to you by Curl?

[Greybeard]

Hi Vikey, if you've not sorted it yet you use the serial port on the switch with Hyperterm, PuTTy or similar to connect to a console and issue the command from there.

[Tyler_Scafidi]

I've been through two serial cables (neither OEM, apparently), and I have just ordered a modular kit so that I can wire the serial myself. 

Does anyone have a wiring diagram for the serial cable needed here (RJ45 and serial)?