topic Port on Summit X440-48t don't work o.k. in ExtremeSwitching (EXOS/Switch Engine)

Port on Summit X440-48t don't work o.k.

Kar_Del_Moral — Fri, 01 Apr 2016 00:35:00 GMT

It's more like weird issue, it first happen like a month ago, the user couldn't get IP address, was the only user on the switch, we change the patch cords, change the vlan to make short it was not a shortage of ip's on that segment (via DHCP), and then it work, but today happen again, even connecting directly to the switch with my laptop, at the end, I connect the user in a different port on the same switch (also tried without Auto option, no success) what do you suggest me to check?

Thanks

p.s. so far is the only user/port with this issue

RE: Port on Summit X440-48t don't work o.k.

davidj_cogliane — Fri, 01 Apr 2016 00:37:00 GMT

is there an FDB entry on the port?

RE: Port on Summit X440-48t don't work o.k.

Kar_Del_Moral — Fri, 01 Apr 2016 00:37:00 GMT

No, because, when I try to check to which port was connected (without following the cable on the rack) I couldn't find it with the show fdb command

RE: Port on Summit X440-48t don't work o.k.

davidj_cogliane — Fri, 01 Apr 2016 00:37:00 GMT

So you know the mac of the PC?
You searched the FDB for the mac and could not find it?

If the above are true I would call tac as I have seen that issue before.

RE: Port on Summit X440-48t don't work o.k.

Kar_Del_Moral — Fri, 01 Apr 2016 00:37:00 GMT

Yes, I knew the mac, and couldn't find it... So I'll reported to TAC then, just as port in switch not working properly

RE: Port on Summit X440-48t don't work o.k.

davidj_cogliane — Fri, 01 Apr 2016 00:37:00 GMT

Yes, we have seen were a port or group of ports on a switch would enter a weird state that kept them from learning mac addresses. As a result they could not forward traffic to the devices connected to them.

Best of luck,

RE: Port on Summit X440-48t don't work o.k.

Kar_Del_Moral — Fri, 01 Apr 2016 00:37:00 GMT

Thanks, that what I like about this community! always so helpful !

RE: Port on Summit X440-48t don't work o.k.

Drew_C — Fri, 01 Apr 2016 00:38:00 GMT

I'd start with wireshark on their PC. Disconnect the network cable, start the wireshark capture, and connect the cable again. This way you can see everything that happens with DHCP/BOOTP.
You could also set a static IP and gateway on the PC to see what's happening.

RE: Port on Summit X440-48t don't work o.k.

Kar_Del_Moral — Fri, 01 Apr 2016 00:38:00 GMT

I'll do that, I check with two different computers using the same port,and different vlan's, and since the user needed to work I use a different port, I'll do the capture.

thanks