VPN MIH link

functions via an MIH link service access point(MIH_LINK_SAP). When communicating with peerMIHFs, it uses the MIH network service access point(MIH_NET_SAP), which provides both layer 2 (L2) andlayer 3 (L3) transport. It is through the combinationof all of these service access points (SAPs) that MIH isable to provide the three distinct services: command,event, and information. (See [20] for further details).The distributed nature of MIH requires a signifi-cant initial investment in order to begin receivingsome of the benefits it provides. Now that MIH (ormore accurately IEEE 802.21) is an actual standard,we should start seeing more effort in this area. In fact,Bell Labs' IEEE 802.21 MIH server recently completedsuccessful interoperability tests (IOTs) at a FixedMobile Convergence Alliance (FMCA) interoperability event hosted and managed by the EuropeanTelecommunications Standards Institute (ETSI).The current 3GPP, 3GPP2, and WiMAX standardsdo not include network side MIH components; UEusage of MIH components is considered a vendorspecific device implementation, outside the standardsscope. The WISH intelligent wireless connection manager (IWCM) utilizes a set of MIH-like accesstechnology-neutral APIs, similar to a subset of MIHcommand and event services related to control andmonitoring of state, behavior and presence of thedevice, link, and network. See the IWCM sectionbelow for details

VPN MIH link

functions via an MIH link service access point(MIH_LINK_SAP). When communicating with peerMIHFs, it uses the MIH network service access point(MIH_NET_SAP), which provides both layer 2 (L2) andlayer 3 (L3) transport. It is through the combinationof all of these service access points (SAPs) that MIH isable to provide the three distinct services: command,event, and information. (See [20] for further details).The distributed nature of MIH requires a signifi-cant initial investment in order to begin receivingsome of the benefits it provides. Now that MIH (ormore accurately IEEE 802.21) is an actual standard,we should start seeing more effort in this area. In fact,Bell Labs' IEEE 802.21 MIH server recently completedsuccessful interoperability tests (IOTs) at a FixedMobile Convergence Alliance (FMCA) interoperability event hosted and managed by the EuropeanTelecommunications Standards Institute (ETSI).The current 3GPP, 3GPP2, and WiMAX standardsdo not include network side MIH components; UEusage of MIH components is considered a vendorspecific device implementation, outside the standardsscope. The WISH intelligent wireless connection manager (IWCM) utilizes a set of MIH-like accesstechnology-neutral APIs, similar to a subset of MIHcommand and event services related to control andmonitoring of state, behavior and presence of thedevice, link, and network. See the IWCM sectionbelow for details