Patent ID: 7796613
Filing Date: 2010-09-14
Classification: H04L

Abstract:
1. A network device, comprising: a processor; a memory in communication with the processor; a network chip having a number of network ports for the device and having access to the processor and memory, wherein a port of the network ports is tagged for a VLAN membership of at least one particular VLAN, and configured to receive at least one packet; and computer executable instructions storable in the memory and executable by the processor to detect whether the packet received at the port is untagged with any VLAN, wherein upon detecting that the packet is untagged with any VLAN, the computer executable instructions determine whether the untagged packet is intended to be untagged on the at least one particular VLAN at the port; and wherein upon determining that the packet is not intended to be untagged on the at least one particular VLAN, the computer executable instructions send a misconfiguration alert signal to a network management program, and determine either the packet is misconfigured to be sent to the network chip without a VLAN tag or the port of the network chip is misconfigured to be tagged with the at least one particular VLAN.