By implementing the layer 2 acknowledgment mechanism the IEEE 802.11 standard is basically trying to hide the wireless link problems and packet drops from user application and higher layer protocols
. This not only can reduce the recovery time after packet drop, but also allows sustaining stable and guaranteed throughput of wireless links.
Following up on their earlier WLAN Systems and Wireless IP for Next Generation Communications, the authors (of DoCoMo Euro- Labs, Germany and the Center for TeleInFrastruktur, Aalborg U., Denmark) attempt to answer questions left unaddressed regarding how IEEE 802.11 wireless local area networks (WLANs) work together with higher layer protocols
such as the IP layer, their interactions with the mobile network and WLAN business models.
AfterBurner provides the EXACT chipset with IPV4 Layer 3 switching (routing) capability, identification of higher layer protocols
(such as OSPF, RIP, BGP, ARP, RARP, ICMP, IGMP, etc.) and a Layer 3 Control and Management Interface (CMI) to simplify the attachment of external CPU management resources.
IP cannot operate without a Layer2 protocol like ATM, and ATM could not handle a single application without higher layer protocols
In most cases lost frames will be retransmitted under control of higher layer protocols
; products will try to maintain frame order with minimum lost frames.