Linksys SGE2000 Cisco Small Business SFE/SGE2xxx Series Managed Switches Admin - Page 200

Configuring IP Information IP Addressing 7 The main improvement IPv6 presents is address size, increasing from 32-bit to 128-bit addresses. The larger address size introduces greater flexibility in assigning IP addresses. IPv6 addresses are normally written as eight groups of four hexadecimal digits, for example FE80:0000:9C00:876A:130B. The abbreviated form is also acceptable, where a group of zeroes can be left out: FE80:9C0:876A:130B. For IPv4-only nodes to communicate with IPv6 nodes, an intermediary transition mechanism is required. The transition mechanism enables IPv6-only hosts to reach IPv4 services and to allow isolated IPv6 hosts and networks to reach the IPv6 Internet over the IPv4 infrastructure. The tunneling mechanism implemented is ISATAP. This protocol treats the IPv4 network as a virtual IPv6 local link, with mappings from each IPv4 address to a linklocal IPv6 address. The switch detects IPv6 frames by the IPv6 ether-type. The switch then can assign the frame to a specific VLAN as defined by the user. The IPv6 Configuration section contains the following topics: • Defining IPv6 Interface • Defining Default Gateway • Configuring ISATAP Tunnels • Viewing IPv6 Neighbors Information • Viewing IPv6 Routes Table Defining IPv6 Interface The IPv6 Interface Page provides parameters for defining IPv6 interfaces. To define IPv6 interfaces: Cisco Small Business SFE/SGE Managed Switches Administration Guide 191