09-28-2014 12:55 PM - edited 03-07-2019 08:54 PM
I just updated my 4 stack of 3750X switches from 12.x IOS to 15.0.2 IOS. Only 2 of them updated correctly the first time, I had to manually update to the other 2. After getting all of them upgrade I restarted the entire stack.
After that I cannot get PCs not on my default VLAN to talk to their DHCP servers or ping anywhere in the network. I get a "PING: transmit failed. General failure". I can however, ping into my default vlan from the switch and ping out to other locations from the switch.
I've tried the following:
Any help at this point is appreciated as my network is entirely down right now.
09-28-2014 02:52 PM
I can set my laptop statically to a VLAN address, and I can ping out, get to the internet, ping between VLANs, etc. But if I just set a port (or leave it in the default VLAN) it will give me the “PING: transmit failed. General failure.” DHCP requests still aren’t getting fulfilled and even pings won’t go through if there’s not a statically set address. Nothing changed on my server configs and I even restarted my DHCP servers after encountered this problem. My guess is this is a new feature that’s turned on by default in the new IOS that needs to be disabled. Any help is appreciated.
09-28-2014 03:02 PM
I thought I was onto something with this DHCP snooping thread: https://supportforums.cisco.com/discussion/11992441/ios-1502se5-dhcp-snooping-problem
But after checking my switch it is not operational.
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