Dell Force10 S4820T FTOS Command Reference Guide - Page 1071
ipv6 nd ra-lifetime, Router Lifetime
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Syntax Parameters Defaults Command Modes ipv6 nd prefix {ipv6-address prefix-length | default} [no-advertise] | [no-autoconfig | no-rtr-address | off-link] ipv6-address prefix-length default no-advertise no-autoconfig no-rtr-address off-link Not configured INTERFACE Enter the IPv6 address in the x:x:x:x::x format followed by the prefix length in the /x format. Range: /0 to /128 The :: notation specifies successive hexadecimal fields of zeros (OPTIONAL) Enter the keyword default to specify the prefix default parameters. (OPTIONAL) Enter the keyword no-advertise to not advertise prefixes. (OPTIONAL) Enter the keyword no-autoconfig to not use prefixes for auto-configuration. (OPTIONAL) Enter the keyword no-rtr-address to not send full router addresses in prefix advertisement. (OPTIONAL) Enter the keyword off-link to not use prefixes for on-link determination. ipv6 nd ra-lifetime e Configure the router lifetime value in the IPv6 router advertisements on an interface. The description of router lifetime from RFC 2461(http://tools.ietf.org/html/rfc2461) is: Syntax Router Lifetime: 16-bit unsigned integer. The lifetime associated with the default router in units of seconds. The maximum value corresponds to 18.2 hours. A Lifetime of 0 indicates that the router is not a default router and SHOULD NOT appear on the default router list. The Router Lifetime applies only to the router's usefulness as a default router; it does not apply to information contained in other message fields or options. Options that need time limits for their information include their own lifetime fields. ipv6 nd ra-lifetime seconds To restore the default values, use the no ipv6 nd ra-lifetime command. Parameters seconds Enter the lifetime value in seconds. Range: 0 to 9000 Defaults 9000 seconds Command Modes INTERFACE Neighbor Discovery Protocol (NDP) | 1071