What is option 242?
Option 242 is used to give the phone the required parameters that it should use to connect to the PBX.
How do I add Avaya option to DHCP?
How to add Avaya 242 option into DHCP Server
- Launch DHCP.
- Expand DHCP and right click IPV4.
- Click ‘Set Predefined Options’
- Click Add.
- Type in details. Name: 242 Avaya.
- Click ok.
- In the string value, type your AVAYA string, for for example: MCIPADD=192.168.2.8,MCPORT=1719,HTTPSERVER=192.168.2.8.
- Click OK.
How do I add a DHCP option?
2 Answers
- On the server running DHCP, open the DHCP MMC.
- Expand DHCP and select DHCP server name.
- Right click IPv4 or IPv6, select “Set Predefined Options”
- In Predefined Options and Values window, click Add.
- Then in Option Type window please insert the information as below:
How are DHCP options applied?
You assign user class options to a client based on an identifier, and the client sends this identifier to the DHCP server to identify itself. You configure user class options to manage DHCP options that you want to assign to clients that require a common configuration.
What is option 43 used for?
Option 43 function DHCP servers and clients use Option 43 to exchange vendor-specific configuration information. The DHCP client can obtain the following information through Option 43: ACS parameters, including the ACS URL, username, and password.
What are the DHCP options?
Common Options DHCP option 1: subnet mask to be applied on the interface asking for an IP address. DHCP option 3: default router or last resort gateway for this interface. DHCP option 6: which DNS (Domain Name Server) to include in the IP configuration for name resolution. DHCP option 51: lease time for this IP address.
What is Option 4 DHCP?
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.
How many DHCP options are there?
ISC (Internet Systems Consortium) DHCP has five predefined option spaces: dhcp, agent, server, nwip, and fqdn.
What is option 82?
You can use DHCP option 82, also known as the DHCP relay agent information option, to help protect the switch against attacks such as spoofing (forging) of IP addresses and MAC addresses, and DHCP IP address starvation.
What is option 66 used for?
Option 66 is a DHCP option, configured in your DHCP server (usually the router), that, upon obtaining an IP address, devices set with Option 66 enabled will also receive the address of a provisioning server, where they will immediately attempt to autoprovision.
What is Option 150 DHCP Cisco?
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.
What is option 43?
Option 43 function Service provider identifier, which is acquired by the CPE from the DHCP server and sent to the ACS for selecting vender-specific configurations and parameters. For more information about CPE and ACS, see Network Management and Monitoring Configuration Guide.