Dell PowerConnect 5448 User's Guide - Page 108
Defining IPv4 Default Gateways, IP Addressing, System, IPv4 Default Gateway - default ip
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IPv6 Syntax The 128-bit IPv6 address format is divided into eight groups of four hexadecimal digits. Abbreviation of this format by replacing a group of zeros with "double colons" (::) is acceptable. IPv6 address representation can be further simplified by suppressing the leading zeros. All different IPv6 address formats are acceptable for insertion, yet for display purposes, the system will display the most abbreviated form, which replaces groups of zeros with "double colons" and removes the "leading zeros". IPv6 Prefixes While unicast IPv6 addresses written with their prefix lengths are permitted, in practice their prefix lengths are always 64 bits and therefore are not required to be expressed. Any prefix that is less than 64 bits is a route or address range that is summarizing a portion of the IPv6 address space. For every assignment of an IP address to an interface, the system runs the Duplicate Address Detection (DAD) algorithm to ensure uniqueness. An intermediary transition mechanism is required for IPv6-only nodes to communicate with IPv6 nodes over an IPv4 infrastructure. The tunneling mechanism implemented is the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP). This protocol treats the IPv4 network as a virtual IPv6 local-link, with each IPv4 address mapped to a Link Local IPv6 address. To open the IP Addressing page, click System → IP Addressing in the tree view. Defining IPv4 Default Gateways The IPv4 Default Gateway page contains fields for assigning Gateway devices. Packets are forwarded to the default IP when frames are sent to a remote network. The configured IP address must belong to the same IP address subnet of one of the IP interfaces. To open the IPv4 Default Gateway page, click System→ IP Addressing → IPv4 Default Gateway in the tree view. Figure 6-22. IPv4 Default Gateway 108 Configuring System Information