Whenever I plug in a mikrotik router to my LAN, my cisco phones freak out. They go into a reboot cycle. Anyone have any ideas?
Sounds like you have possibly caused a loop. What are you trying to do?
No loop, just a single ethernet cable plugged into the same switch as the cisco phones. Single IP address assigned. This is a factory defaulted rb751. I can’t see why the cisco phones freak out.
maybe the cisco phones react strangely to MNDP.
So just try to disable neighbor discovery on the affected
interfaces (don’t forget the bridges!) of your mikrotik device.
Or, maybe mikrotik’s DHCP server is on?
no DHCP server on.
I pulled port 5 out of the switch. no ip address, I block everything on the input chain and output chain on the interface in firewall.
Here is the config
on the default vlan (vlan1) I have PCs
on vlan2 I have the cisco phones.
There is a DHCP server on the cisco router for the PCs
another DHCP server on the CCME on vlan2
when I plug in the mikrotik, the phones will DHCP a vlan1 IP address. Now, I have EVERYTHING L3 blocked on the interface on the mikrotik, so DHCP should be 100% blocked. This is a major hassle!