By William I. Orr, Stuart D. Cowan

ISBN-10: 0823087107

ISBN-13: 9780823087105

This authoritative guide covers the layout, building, set up, and operation of fifty two vertical antennas.

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LoWPAN adaptation in an edge router typically is performed as part of the 6LoWPAN network interface driver and is usually transparent to the IPv6 protocol stack itself. 9 illustrates one realization of an edge router with 6LoWPAN support. 4 for edge router implementation considerations. Inside the LoWPAN, hosts and routers do not actually need to work with full IPv6 or UDP header formats at any point as all compressed fields are implicitly known by each node. 8 IP and 6LoWPAN protocol stacks. 9 IPv6 edge router with 6LoWPAN support.

These mechanisms are typically collocated on LoWPAN Edge Routers, on a local gateway router, or on a node configured for that purpose on the Internet. 3. Security: When connecting embedded devices to the public Internet, security should always be a major concern as embedded devices are limited in resources and are autonomous. This is very much so with 6LoWPAN as node and network limitations prevent the use of the full IPsec suite, transport layer (“socket”) security or the use of sophisticated firewalls on each node.

2 for more about stack implementation issues). The most common transport protocol used with 6LoWPAN is the user datagram protocol (UDP) [RFC0768], which can also be compressed using the LoWPAN format. The transmission control protocol (TCP) is not commonly used with 6LoWPAN for performance, efficiency and complexity reasons. The Internet control message protocol v6 (ICMPv6) [RFC4443] is used for control messaging, for example ICMP echo, ICMP destination unreachable and Neighbor Discovery messages.

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All about Vertical Antennas by William I. Orr, Stuart D. Cowan


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