The LLDP implementation in Cisco IOS allows remote attackers to cause a denial of service (device reload) via a malformed packet, aka Bug ID CSCum96282.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-3286
http://www.securitytracker.com/id/1030257
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3273