Strange ping response from server

[talksr]

I can't quite get my head around this issue.

 

I have a server with four nics. Two for our admin network and two for curriculum.

 

It has been offline since Monday but is on and booted to the OS with no problems.

 

Of the four nics, both of the curriculum ones are responding with sporadic ping responses, see attached.

 

I am currently struggling to gain access to the managed switch (HP non-Vlans).

 

Does anyone know what could be the matter? Was going to powercycle the switch, have bounced server several times, unplugged network cables, disabled nics etc etc etc, so seems more switch based, but all other devices on switch are running without trouble.

 

I am confused by this.

 

[Steve21]

If you disable one of them (dodgy ones) does it sort it out? or still occur on the one? Notice you said disabled them, but wasn't sure if that's both then re-enabled both

 

Steve

[tmcd35]

What type of server is this? Is it a Domain Controller?

Is there any reason for 4 nics? Are they on two totally segregated network domain? If so what's the network address and subnet mask for each domain? Does the nic and switches support LCAP channel bonding (802.11ad - I think)?

What's the DNS and Default Gateway settings for each NIC?

[mikkydoos]

What are you pinging ? To the server of from the server ?

[HPlum78]

Gateway/ Route issue would be my guess, what are the settings of the NICs? and a route print screen shot from the server. H

[tmcd35]

My guess would be there are 4 NIC's connected to the same subnet and one of the other NIC's is receiving the ACK packets for the ping. That's why I asked if the NIC and Switch would support channel bonding.

[talksr]

Hi sorry it took me a while to respond. I found out what the fault was but didn't get time to update as it was well past my home time.

 

The fault was with the managed switch. Still trying to get to the bottom of the problem but once I rebooted it, the management light was flashing. Couldn't actually see this via the telnet session, but when I revisited the cab, I noticed straight away. Some of the ports were flashing like normal, but the ones the server curriculum ports were connected to were flashing in sequence with the management light.

 

Unplugged switch from the wall and left it off for a minute or so, when it came back on, all was well and no problems since.

 

As I said, I need to do a little more investigation and find out what the issue was. The switch in question was an HP 2510g-48

[Patrick]

I've had switches crash before causing odd issues. I've rebooted them and all was well. Can't remember what model they were though.