Polycom SIP 2.2.2 manual Ethernet menu, Cdp

			Setting up Your System
Note
		The Server User and Server Password parameters should be changed from the
		default values. Note that for insecure protocols the user chosen should have very
		few privileges on the server.
		Ethernet Menu
		The following Ethernet configuration parameters can be modified on the
		Ethernet menu:
Name	Possible Values		Description
CDP	Enabled, Disabled		If enabled, the phone will use CDP. It also reports PoE
			power usage to the switch. The default value is Enabled.
VLAN ID	Null, 0 through 4094		Phone’s 802.1Q VLAN identifier. The default value is Null.
			Note: Null = no VLAN tagging
VLAN Filtering	Enabled, Disabled		Filter received Ethernet packets so that the TCP/IP stack
			does not process bad data or too much data.
			Enable/disable the VLAN filtering state.
			The default value is Enabled.
Storm Filtering	Enabled, Disabled		Filter received Ethernet packets so that the TCP/IP stack
			does not process bad data or too much data.
			Enable/disable the DoS storm prevention state.
			The default value is Enabled.
LAN Port Mode	0 = Auto		The network speed over the Ethernet.
	1 = 10HD		The default value is Auto.
	2 = 10FD
	3 = 100HD
	4 = 100FD
PC Port Mode	Auto, 10HD, 10FD, 100HD,		The network speed over the Ethernet.
	100FD		The default value is Auto.
Note		The LAN Port Mode and PC Port Mode parameters are only available on
		SoundPoint IP 330, 430, 550, 601, and 650 phones. HD means half duplex and FD
		means full duplex.

It is recommended that you leave the LAN and PC parameters set to Auto.

Syslog Menu

Syslog is a standard for forwarding log messages in an IP network. The term "syslog" is often used for both the actual syslog protocol, as well as the application or library sending syslog messages.

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