What are DHCP options?
DHCP Options are additional IP address settings that a DHCP server passes to DHCP clients. When a DHCP client requests an IP address from a DHCP server, the server sends the client at least an IP address and a subnet mask value. Additional information can be sent to clients if you configure various DHCP options.
What is Option 4 DHCP?
Interesting Options DHCP option 4: list of time server as stated in the RFC868 (Time Protocol) DHCP option 12: host name of the client, very useful for IoT and any device without user. DHCP option 15: specifies the domain name that client should use as suffix when resolving hostnames via the Domain Name System.
What is the difference between DHCP option 150 and option 66?
DHCP Option 150 is Cisco proprietary. The IEEE standard that matches with this requirement is Option 66. Like option 150, option 66 is used to specify the Name of the TFTP server. Option 66 is an open standard juniper supports it. RFC 2132 defines option 66. •DHCP option 66 only supports the IP address or the hostname of a single TFTP server.
What is DHCP 150 on Cisco router?
What is Cisco DHCP 150? Cisco IP Phones download their configuration from a TFTP server. When a Cisco IP Phone starts, if it does not have both the IP address and TFTP server IP address pre-configured, it sends a request with option 150 to the DHCP server to obtain this information.
How do Cisco IP phones download their configuration from the DHCP server?
Cisco IP Phones download their configuration from a TFTP server. When a Cisco IP Phone starts, if it does not have both the IP address and TFTP server IP address pre-configured, it sends a request with option 150 to the DHCP server to obtain this information. DHCP Option 150 is Cisco proprietary.
How do I configure DHCP manager for Cisco IP telephony?
From Server Manager choose to add a role and choose DHCP Server. Once you have the DHCP Server installed and authorized, launch DHCP Manager. Next you’ll need to go ahead and create a scope for your Cisco IP telephony devices.