Cisco SR224T Administration Guide - Page 210

Configuring IP Information Management and IP Interfaces 16 STEP 3 Click Apply. The IPv4 interface settings are written to the Running Configuration file. Managing IPv6 The Internet Protocol version 6 (IPv6) is a network-layer protocol for packetswitched internetworks. IPv6 was designed to replace IPv4, the predominantly deployed Internet protocol. IPv6 introduces greater flexibility in assigning IP addresses because the address size increases from 32-bit to 128-bit addresses. IPv6 addresses are written as eight groups of four hexadecimal digits, for example FE80:0000:0000:0000:0000:9C00:876A:130B. The abbreviated form, in which a group of zeroes can be left out, and replaced with '::', is also acceptable, for example, ::-FE80::9C00:876A:130B. IPv6 nodes require an intermediary mapping mechanism to communicate with other IPv6 nodes over an IPv4-only network. This mechanism, called a tunnel, enables IPv6-only hosts to reach IPv4 services, and enables isolated IPv6 hosts and networks to reach an IPv6 node over the IPv4 infrastructure. Tunneling uses the ISATAP mechanism. This protocol treats the IPv4 network as a virtual IPv6 local link, with mappings from each IPv4 address to a link local IPv6 address. The switch detects IPv6 frames by the IPv6 Ethertype. Defining IPv6 Global Configuration The IPv6 Global Configuration page defines the frequency of the IPv6 ICMP error messages generated by the switch. To define IPv6 global parameters: STEP 1 Click Administration > Management Interface > IPv6 Global Configuration. The IPv6 Global Configuration page opens. STEP 2 Enter values for the following fields: • ICMPv6 Rate Limit Interval-Enter how often the ICMP error messages are generated. Cisco Small Business 200 Series Smart Switch Administration Guide 211