NDFirstProbeDelay

The Neighbor Discovery First Probe Delay option is the delay before a node sends a probe packet to a neighbor on the network for the first time.

Default = 5 seconds

NDMAXAnyCastDelay

The Neighbor Discovery Anycast Delay option indicates the amount of time a node waits before sending a neighbor advertisement in response to a valid neighbor solicitation, targeting one of the assigned addresses of the node. The address is an anycast address. The node sends the address resolution response at a random time ranging from 0 to the defined number.

Default = 1 second

NDMAXMultiCastSolicitations

The Neighbor Discovery Maximum Multicast Solicitations option indicates the maximum number of multicast solicitation retries when a node has a unicast packet to send to a neighbor but does not know the link-layer address of the neighbor. The node performs address resolution by retrying the neighbor solicitations defined maximum.

Default = 3 transmissions

NDMAXNeighborAdvertisement

The Neighbor Discovery Maximum Neighbor Advertisement option indicates the maximum number of times the neighbor advertisement is retried. In some cases, a node might be able to determine that its link‑layer address has changed and might want to quickly inform its neighbors of the new link-layer address by sending unsolicited neighbor advertisements to the all-nodes multicast address up to the defined maximum.

Default = 3 transmissions

NDMAXRtrSolicitationDelay

The Neighbor Discovery Maximum Router Solicitation Delay option indicates the maximum delay before a host sends an initial solicitation. The delay is a random amount of time between 0 and the maximum. Using this option alleviates congestion when many hosts start up on a link in unison.

Default = 1 second

NDMAXRtrSolicitations

The Neighbor Discovery Maximum Router Solicitations option indicates the maximum number of router solicitation retries. When an interface becomes enabled, a host might be unwilling to wait for the next unsolicited router advertisement to locate default routers or learn prefixes. To obtain router advertisements quickly, a host transmits router solicitations up to the defined maximum value.

Default = 3 transmissions

NDMAXRandomFactor

The Neighbor Discovery Maximum Random Factor option indicates the multiplier for the maximum random base and is used in calculating a variable timeout value. The MaximumRandomBase value is .5.

Default = 3

NDMAXUniCastSolicitations

The Neighbor Discovery Maximum Unicast Solicitations option indicates the maximum number of unicast solicitation retries. After entering the PROBE state, a node sends a unicast neighbor solicitation message to the neighbor using the cached link-layer address. While in the PROBE state, a node retransmits Neighbor Solicitation messages up to the defined maximum.

Default = 3 transmissions

NDMINRandomFactor

The Neighbor Discovery Minimum Random Factor option indicates the multiplier for the minimum random base and is used in calculating a variable timeout value. The MinimumRandomBase value is .5.

Default = 1

NDREACHableInterval

The Neighbor Discovery Reachable Interval option indicates the base time used for computing the random reachable time value.

Modifying this option through this command overrides any network information received to update this value.

Modifying the value to *DEFAULT updates the value to the default value and permits dynamic update through the network.

Default = 30,000 milliseconds

NDRETransInterval

The Neighbor Discovery Retrans Interval option indicates the time between retransmissions of a message to a neighbor when resolving the address or when probing whether the neighbor can be reached.

Modifying this option through this command overrides any network information received to update this value.

Modifying the value to *DEFAULT updates the value to the default value and permits dynamic update through the network.

Default = 1,000 milliseconds

NDRtrSolicitationInterval

The Neighbor Discovery Router Solicitation Interval option indicates the interval that separates router solicitations when requesting router information.

Default = 1 second