Enables advertisement of neighbor discovery (ND) reachable time in RAs. This feature is disabled by default.

Supported in the following platforms:

  • Access Points — AP505i, AP510i/e, AP560i/h
  • Service Platforms — NX5500, NX7500, NX9500, NX9600, VX9000


nd-reachable-time [<5000-3600000>|global]


nd-reachable-time [<5000-3600000>|global]
nd-reachable-time [<5000-3600000>| global] Configures the interval, in milliseconds, that a node assumes a neighbor is reachable after receiving a reachability confirmation from the neighbor. Therefore, a neighbor is reachable, after being discovered, for a period specified here. This value is advertised in RAs. Use one of the following options:
  • <5000-3600000> – Configures an interface-specific value. Specify a value from 5000 - 3600000 milliseconds. The default is 5000 milliseconds.
  • global – Advertises the neighbor reachable time configured for the system. This is the value configured at the device configuration mode. For more information, see use (profile/device-config-mode-commands) (profile config mode).


nx9500-6C8809(config-ipv6-radv-policy-test)#nd-reachable-time 6000
nx9500-6C8809(config-ipv6-radv-policy-test)#show context
ipv6-router-advertisement-policy test
 nd-reachable-time 6000
 advertise mtu
 advertise hop-limit
 dns-server 2002::2 lifetime 3000
 domain-name TechPubs lifetime infinite

Related Commands

no (ipv6-ra-policy-config-commands) Disables advertisement of neighbor reachable time in RAs