Hello,
I would like to report a problem I had after upgrading a stack of three N2048 switches from version 6.2.6.6 to version 6.3.0.16
After the upgrade, some PCs in some vlans could not reach their gateway anymore. I found that these devices didn't have their gateway's mac in their arp table. It would seem that their arp requests would get dropped in the port channel connecting the N2048 stack to the rest of the network. Adding a static arp entry on the affected PCs allowed them to reach their gateway.
I know that there has been a bug (fixed in 6.3.15) with packet drops on port channels using mode 7 (Enhanced). This gave me a clue and today I changed the hashing mode to 6 (Source/Destination IP and source/destination TCP/UDP port) and I removed the static arp entries I had created as a workaround the day before. I could then see the gateway as dynamic entries on the PCs, as it should.
It would seem that there is still a bug with Enhanced Hashing in 6.3.0.16. I'll be happy to send my config and / or more information if requested to help you investigate the problem.
Regards,
Martin
