IPv4 Network Parameters

The following table lists the ways a phone can obtain IPv4 and related parameters in an IPv4 network.

Parameter

DHCPv4 Option

DHCPv4

DHCPv4 INFORM

Configuration File (application only)

Device Settings

IPv4 address

No

Yes

No

No

Yes

Subnet mask

1

Yes

No

No

Yes

IPv4 Gateway

3

Yes

No

No

Yes

Boot server address

Yes

Yes

No

Yes

SIP server address

151

You can change this value by changing the device setting.

Yes

No

Yes

Yes

SNTP server address

Look at option 42, then option 4.

Yes

No

Yes

Yes

SNTP GMT offset

2

Yes

No

Yes

Yes

Syslog

Yes

No

No

Yes

DNS server IP address

6

Yes

No

Yes

Yes

DNS INFORM server IP address

6

-

-

-

-

DNS domain

15

Yes

No

Yes

Yes

VLAN ID

Warning: Link Layer Discovery Protocol (LLDP) overrides Cisco Discovery Protocol (CDP). CDP overrides Local FLASH which overrides DHCP VLAN Discovery.