We are in the process of upgrading our phone system to a NEC SV9100 with IP phones. I plugged a phone in (PBX not online) to do some initial configuration on the phone with the following:
SG550X-48MP with newest firmware (2.4.5.71)
NEC DT800 series phone
Phone boots up and gets an IP address from DHCP server. The phone then attempts to connect to the SIP server which which is not online. After about a minute the phone attempts to reinitialize (reboots) and the switch crashes. The log has the following entry (followed by a bunch of ros(some hex codes) which I didn't include):
%AUTOSMARTPORT-F-DEV_CALC_FAILED: XDP device type calculation failed: interface gi1/0/25 - capability 3 ***** FATAL ERROR ***** Reporting Task: BRMN. Soft ware Version: 2.4.5.71 {bunch of ros(some hex code) errors}
Disabling AutoSmartPort both system wide and on the port had no effect. So I set up a port mirror on the switch to capture the traffic from the phone when it reboots and the last 3 packets sent from the phone before the switch crashes are LLDP packets. By disabling "LLDP Mode" on the phone the issue of the switch crashing is fixed. The problem is if someone plugs in a new phone with its default settings it will crash the switch.
I would like to report the bug to Cisco but it seems you have to have an active contract agreement.
