https://community.extremenetworks.com/t5/extremeswitching-exos-switch/palo-alto-crashes-network/m-p/90902#M21300 <P>The firewall crashed…&nbsp;means that you dont have conectiviti to the management interface?</P> <P>have you tried to fix the auto negotiation off at x440 port? you can see the mac of the PA interface?</P> <P>which vlan learn the mac?</P> Fri, 13 Dec 2019 19:58:04 GMT FES 2019-12-13T19:58:04Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/palo-alto-crashes-network/m-p/90901#M21299 <P>I am using a PA220 and x440&nbsp;switches together on a simple network.&nbsp;for some reason out of the blue the firewall crashes when connected to the switch.&nbsp;I have tested the PA&nbsp;where I pulled it out of the network and connected it to a Cisco 2960 and all is good. as soon as I connect it back to the X440 The firewall crashes.&nbsp;looking back at the switches I find that although the lights are blinking none are actually communicating.&nbsp;I’ve gathered all the equipment to bring back to my home office for further troubleshooting but I’m wondering if anyone else has experienced this</P> Fri, 06 Dec 2019 13:50:32 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/palo-alto-crashes-network/m-p/90901#M21299 Dummel 2019-12-06T13:50:32Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/palo-alto-crashes-network/m-p/90902#M21300 <P>The firewall crashed…&nbsp;means that you dont have conectiviti to the management interface?</P> <P>have you tried to fix the auto negotiation off at x440 port? you can see the mac of the PA interface?</P> <P>which vlan learn the mac?</P> Fri, 13 Dec 2019 19:58:04 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/palo-alto-crashes-network/m-p/90902#M21300 FES 2019-12-13T19:58:04Z