December 2014 Archive


1351
Obtaining a Block of Addresses
Obtaining a Block of Addresses

In order to get a block of IP addresses for use within an organization's subnet, a network administrator might first contact its ISP. which would provide addresses from a larger block of addresses that had already been assigned to the ISP. For instance, the ISP may itself have been

Tags subnet, dhcp discover message, dhcp offer message, dhcp request message
1326
Network Address Translation (NAT)
Network Address Translation (NAT)

After studying Internet addresses and the IPv4 datagram format, we're now well aware that every IP-capable device requires an IP address. With the proliferation of small office, home office (SOHO) subnets, this would seem to imply that whenever a SOHO wants to install a LAN to

Tags subnet, address space, router, connection reversal, nat traversal
1364
Internet Control Message Protocol (ICMP)
Internet Control Message Protocol (ICMP)

Remember that the network layer of the Internet has three main components: the IP protocol, discussed in the previous section; the Internet routing protocols (including RIP, OSPF. and BGP), which are covered in Routing in the Internet and ICMP, which is the subject of this section.

Tags network layer, router, host, icmp, source quench message, ip protocol, ip address
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