Option 43 hex cisco

1. What is Option 43 in DHCP Cisco?
2. What is option125?
3. What is option 82?
4. What is option 43 used for?
5. What is flex mode in Cisco WLC?
6. How do I create a custom DHCP scope option?
7. What is Option 150 DHCP Cisco?
8. What is lease time in router?
9. What is enable DHCP relay?
10. What is DHCP lease time?
11. What is option 66 used for?
12. What is Giaddress?
13. What is option 81 DHCP?

What is Option 43 in DHCP Cisco?

Details. We use DHCP Option 43 to help the AP in obtaining controller ip address from the DHCP server while DHCP request to get an ip address is sent to the DHCP server by the LAP.In addition to offering it an ip address , DHCP server may return one or more controller ip address also to the LAP.

What is option125?

Option 125 is a vendor-specific DHCP Server feature that is required if you are using AIM's multi-subnet mode. ... The option gives the endpoints the IP Address of the Primary and any other Backup or Satellite AIM Servers that reside on the network. It is also used to setup Satellite AIM's.

What is option 82?

DHCP Option 82 is organized as a single DHCP option that contains information known by the relay agent. This feature provides additional security when DHCP is used to allocate network addresses, and enables the Cisco controller to act as a DHCP relay agent to prevent DHCP client requests from untrusted sources.

What is option 43 used for?

Lync Server 2010 introduced the usage of DHCP Option 43 which is used to provide clients and devices on a network the ability to locate the Lync Server's Certificate Provisioning service, and thus automatically download a certificate required to support secure HTTPS and TLS communications for the remainder of the ...

What is flex mode in Cisco WLC?

Flex Connect also known as HREAP by the old timers, allows data traffic to be switched locally and not go back to the controller. It basically causes the AP to behave like an autonomous AP, but be managed by the WLC. In this mode, the AP can still function even if it looses connection with the controller.

How do I create a custom DHCP scope option?

On the DHCP server, open the DHCP server administration tool by clicking Start > Administration Tools > DHCP. Find your server and right-click on the scope to be configured under the server name. Click on the Scope Options entry and select Configure Options.

What is Option 150 DHCP Cisco?

DHCP option 150 provides the IP addresses of a list of TFTP servers. DHCP option 66 gives the IP address or the hostname of a single TFTP server.

What is lease time in router?

An IP address is assigned to a computer from the router's DHCP server not for permanent use but for a specific period. This is called the lease time of an IP address. When the lease time expires, the IP address is again considered free, and the client must request a new one (it can, however, be the same one).

What is enable DHCP relay?

The DHCP server feature allows devices on the same network as the SD-WAN appliance's LAN/WAN interface to obtain their IP configuration from the SD-WAN appliance. The DHCP relay feature allows your SD-WAN appliances to forward DHCP packets between DHCP client and server.

What is DHCP lease time?

When DHCP sends configuration information to a client, the information is sent with a lease time. This is the length of time that the client can use the IP address it has been assigned. The duration of the lease time can be changed according to your specific requirement.

What is option 66 used for?

Option 66 allows you to specify the address of a TFTP server on your network, which is how Endpoint Manager serves configuration files to phones. So basically you need to add a DHCP configuration setting specifying your PBX server's IP address for option 66.

What is Giaddress?

Typically, DHCP relay agents rely on the Gateway IP Address (GIADDR) field to communicate with DHCP servers. ... To inform the DHCP server about the subnet upon which the DHCP client that is requesting the IP address lease resides. To inform the DHCP server of the IP address to use to communicate with the relay agent.

What is option 81 DHCP?

DHCP option 81: Client Fully Qualified Domain Name – this option allows to perform automatic update of the DNS records associated to the client, mainly the A and PTR. In the option we can specify whether the client or the server will update the records and the FQDN associated to the client. It is defined in the RFC4702.