IEEE 802.11 Medium Access Control (MAC) Profile for Control and Provisioning of Wireless Access Points (CAPWAP) (RFC7494)
Original Publication Date: 2015-Apr-01
Included in the Prior Art Database: 2015-Apr-18
Internet Society Requests For Comment (RFCs)
C. Shao: AUTHOR [+6]
The CAPWAP protocol supports two MAC modes of operation: Split and Local MAC, as described in [RFC5415] and [RFC5416]. However, there are MAC functions that have not been clearly defined. For example, IEEE 802.11 [IEEE.802.11] encryption is specified as located in either the AC or the WTP with no clear way to negotiate where it should be located. Because different vendors have different definitions of the MAC mode, many MAC-layer functions are mapped differently to either the WTP or the AC by different vendors. Therefore, depending upon the vendor, the operators in their deployments have to perform different configurations based on implementation of the two modes by their vendor. If there is no clear specification, then operators will experience interoperability issues with WTPs and ACs from different vendors.
Internet Engineering Task Force (IETF) C. Shao Request for Comments: 7494 H. Deng Category: Standards Track China Mobile ISSN: 2070-1721 R. Pazhyannur Cisco Systems F. Bari AT&T R. Zhang China Telecom S. Matsushima SoftBank Telecom April 2015
IEEE 802.11 Medium Access Control (MAC) Profile for Control and Provisioning of Wireless Access Points (CAPWAP)
The Control and Provisioning of Wireless Access Points (CAPWAP) protocol binding for IEEE 802.11 defines two Medium Access Control (MAC) modes for IEEE 802.11 Wireless Transmission Points (WTPs): Split and Local MAC. In the Split MAC mode, the partitioning of encryption/decryption functions is not clearly defined. In the Split MAC mode description, IEEE 802.11 encryption is specified as located in either the Access Controller (AC) or the WTP, with no clear way for the AC to inform the WTP of where the encryption functionality should be located. This leads to interoperability issues, especially when the AC and WTP come from different vendors. To prevent interoperability issues, this specification defines an IEEE 802.11 MAC Profile message element in which each profile specifies an unambiguous division of encryption functionality between the WTP and AC.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Inter...