topic Re: What is option 43 in DHCP in Wireless

What is option 43 in DHCP

knaik99 — Mon, 05 Jul 2021 18:15:01 GMT

What is option 43 in DHCP

Can any one explain in simple language ? internet description is not neat

Re: What is option 43 in DHCP

Seb Rupik — Wed, 06 Nov 2019 12:17:19 GMT

Hi there,

Option 43 is one to two 'Vendor Specific DHCP Options' defined in RFC2132.

In the WLC scenario, when an Access Point broadcasts its DHCP Discover message, it uses Option 60 to specify its Vendor Class Identifier (VCI). The VCI uniquely identifies the AP platform/ model. The DHCP server in turn uses this VCI information to determine the contents of the Option 43 value. The Option 43 value will contain the IP addresses of WLCs the AP should associate with.

In summary, using these two options allows an administrator to pair Access Points with WLCs based on hardware type.

cheers,

Seb.

Re: What is option 43 in DHCP

balaji.bandi — Wed, 06 Nov 2019 12:56:29 GMT

here is the good explanation :

https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/97066-dhcp-option-43-00.html