Cisco RV042 Administration Guide - Page 72

DHCP Router Advertisement (IPv6) 4 • RA Flags: Choose whether or not hosts can use DHCPv6 to obtain addresses and other information. The options are described below. - Enabling the Managed flag only: Check the Managed box if you want hosts to use an administered /stateful configuration protocol (DHCPv6) to obtain stateful addresses and other information through DHCPv6. - Enabling the Other flag only: Check the Other box if you want hosts to use an administered/stateful configuration protocol (DHCPv6) to obtain other, non-address information, such as DNS server addresses. - Enabling both flags: Check both boxes if you want hosts to obtain addresses and other information through DHCPv6. - Disabling both flags: Uncheck both boxes if you want hosts to obtain addresses and other information through router advertisements and not DHCPv6. • Router Preference: Choose High, Medium, or Low. This preference metric is useful in a network topology in which multi-homed hosts have access to multiple routers. This metric helps a host to choose an appropriate router. If two routers are reachable, the one with the higher preference will be chosen. These values are ignored by hosts that do not implement router preference. The default setting is High. • MTU: Enter the size of the largest packet that can be sent over the network. The MTU (Maximum Transmission Unit) is used in Router Advertisement messages to ensure that all nodes on the network use the same MTU value when the LAN MTU is not well-known. The default setting is 1500 bytes, which is the standard value for Ethernet networks. For PPPoE connections, the standard is 1492 bytes. Unless your ISP requires a different setting, this setting should not be changed. • Router Lifetime: Enter the time in seconds that the Router Advertisement messages will exist on the route. The default is 3600 seconds. Cisco Small Business RV0xx Series Routers Administration Guide 72