This object describes a unified approach for Layer 3 to Layer 2 address resolution protocols,
managing both the Neighbor Discovery Protocol (NDP) for IPv6 {{bibref|RFC4861}} and the
Address Resolution Protocol (ARP) for IPv4. It contains an {{object|InterfaceSetting}} table
that defines the configuration for individual IP interfaces.
Enables or disables Neighbor Discovery.
{{numentries}}
A per-interface configuration entry for address resolution protocols. This entry is
associated with a specific IP interface (via {{param|Interface}}) and contains
sub-objects for configuring ARP ({{object|ARP}}) for IPv4 and NDP
({{object|NDP}}) for IPv6.
For this entry to be operational, the {{param|Interface}} parameter MUST be a valid
reference to an existing IP interface. If the reference is invalid, this entry is
inoperable and the CPE MUST set {{param|Status}} to {{enum|Error_Misconfigured|Status}}.
Enables or disables this entire interface setting entry. If {{false}}, both ARP and NDP are
considered disabled for this interface through this object, regardless of their individual
{{param|ARP.Enable}} or {{param|NDP.Enable}} settings.
The status of this entry. {{enum}}
The {{enum|Error_Misconfigured}} value indicates that a necessary
configuration value is undefined or invalid.
The {{enum|Error}} value MAY be used by the CPE to indicate a locally
defined error condition.
This is the IP interface associated with this {{object}} entry.
The number of consecutive Neighbor Solicitation messages sent while
performing Duplicate Address Detection on a tentative address
(see{{bibref|RFC4862|5.1}}).
A value of zero indicates that Duplicate Address Detection is not
performed on tentative addresses.
A value of one indicates a single transmission with no follow-up
retransmissions.
If the value is greater than 1, {{param|RetransTimer}} defines the
delay between consecutive messages.
{{deprecated|2.21|in favor of {{param|NDP.DADTransmits}}}}
Retransmission interval in {{units}}, as defined in
{{bibref|RFC4861}}. For auto-configuration purposes, {{param}}
specifies the delay between consecutive Neighbor Solicitation
transmissions performed during Duplicate Address Detection (DAD)
{{bibref|RFC4862|Section 5.4}}, as well as the time a node waits
after sending the last Neighbor Solicitation before ending the DAD
process.
{{deprecated|2.21|in favor of {{param|NDP.RetransTimer}}}}
Retransmission interval in {{units}}, as defined in
{{bibref|RFC4861|6.3.7}}. For auto-configuration purposes, {{param}}
specifies the delay between consecutive Router Solicitation
transmissions.
{{deprecated|2.21|in favor of {{param|NDP.RtrSolicitationInterval}}}}
Maximum Number of Router Solicitation Transmission messages, as
defined in {{bibref|RFC4861}}. For auto-configuration purposes
{{param}} specifies the Maximum Number of Router Solicitation
Transmission messages to help the host to conclude that there are no
routers on the link.
{{deprecated|2.21|in favor of {{param|NDP.MaxRtrSolicitations}}}}
Enables or disables Neighbor Unreachability Detection (NUD)
{{bibref|RFC4861|Section 7}}.
{{deprecated|2.21|in favor of {{param|NDP.NUDEnable}}}}
Enables or disables Router Solicitation (RS) on {{param|Interface}}
{{bibref|RFC4861|Section 4.1}}.
{{deprecated|2.21|in favor of {{param|NDP.RSEnable}}}}
Contains all parameters related to the Neighbor Discovery Protocol (NDP) for this interface,
as defined in {{bibref|RFC4861}}.
Enables or disables NDP functionality for this specific interface. This parameter works
in conjunction with {{param|#.Enable}}. If {{param|#.Enable}} is {{false}}, then NDP
is considered disabled for this interface regardless of this parameter's value.
The status of this {{object}}. {{enum}}
A value of {{enum|Error_Misconfigured}} indicates that the referenced
{{param|#.Interface}} is not a valid reference to an IPv6-capable interface
(that is attached to the IPv6 stack).
The number of consecutive Neighbor Solicitation messages sent while
performing Duplicate Address Detection on a tentative address
(see{{bibref|RFC4862|5.1}}).
A value of zero indicates that Duplicate Address Detection is not
performed on tentative addresses.
A value of one indicates a single transmission with no follow-up
retransmissions.
If the value is greater than 1, {{param|RetransTimer}} defines the
delay between consecutive messages.
Retransmission interval in {{units}}, as defined in
{{bibref|RFC4861}}. For auto-configuration purposes, {{param}}
specifies the delay between consecutive Neighbor Solicitation
transmissions performed during Duplicate Address Detection (DAD)
{{bibref|RFC4862|Section 5.4}}, as well as the time a node waits
after sending the last Neighbor Solicitation before ending the DAD
process.
The base time in {{units}} for how long a neighbor is considered
valid and reachable in the neighbor cache
{{bibref|RFC4861|Section 6.3}}.
Retransmission interval in {{units}}, as defined in
{{bibref|RFC4861|6.3.7}}. For auto-configuration purposes, {{param}}
specifies the delay between consecutive Router Solicitation
transmissions. If {{param|MaxRtrSolicitationInterval}} is configured,
this parameter serves as the initial retransmission time (IRT), where IRT is set to RTR_SOLICITATION_INTERVAL,
for the backoff algorithm, as described in {{bibref|RFC7559}}.
The maximum retransmission time (MRT) in {{units}} between consecutive Router Solicitation transmissions when the
device implements a back-off algorithm, as defined in {{bibref|RFC7559}}.
It is used together with {{param|RtrSolicitationInterval}} to
control back-off behavior.
If {{true}}, the number of Router Solicitation transmissions is unlimited, overriding
{{param|MaxRtrSolicitations}}. This corresponds to setting MAX_RTR_SOLICITATIONS to
infinity, as allowed by {{bibref|RFC7559}}. If {{false}},
{{param|MaxRtrSolicitations}} is used.
Maximum Number of Router Solicitation Transmission messages, as
defined in {{bibref|RFC4861}}. For auto-configuration purposes
{{param}} specifies the Maximum Number of Router Solicitation
Transmission messages to help the host to conclude that there are no
routers on the link.
If {{param|MaxRtrSolicitationInterval}} is configured, This parameter corresponds to the
Max Retransmit Count (MRC), where MRC is set to MAX_RTR_SOLICITATIONS as defined in
{{bibref|RFC7559}}.
This parameter is ignored if {{param|UnlimitedMaxRtrSolicitations}} is {{true}}.
Enables or disables Neighbor Unreachability Detection (NUD)
{{bibref|RFC4861|Section 7}}.
Enables or disables Router Solicitation (RS) on {{param|#.Interface}}
{{bibref|RFC4861|Section 4.1}}.
The maximum delay in {{units}} before sending the first Router Solicitation message
after the interface is brought up, as defined in {{bibref|RFC4861|Section 6.3.7}}.
The actual delay is a random value between 0 and {{param}}.
This random delay desynchronizes clients which start at the same time (for example,
after a power outage).
A value of 0 indicates no delay.
Note: The random delay is not needed if Duplicate Address Detection (DAD) has already
introduced sufficient randomization.
The maximum duration in {{units}} during which the client is permitted to retransmit
Router Solicitation messages, as defined in {{bibref|RFC7559}}.
This parameter corresponds to the Maximum Retransmit Duration (MRD).
When {{param|MaxRtrSolicitationInterval}} is configured, this parameter works together
with the backoff algorithm to control the total time spent soliciting routers.
A value of 0 indicates that no specific maximum duration is set.
This parameter is ignored if {{param|UnlimitedMaxRtrSolicitations}} is {{false}} and
{{param|MaxRtrSolicitations}} is reached before the duration expires.
Contains all parameters related to the Address Resolution Protocol (ARP) {{bibref|RFC826}} for
this interface.
Enables or disables ARP functionality for this specific interface. This parameter works
in conjunction with {{param|#.Enable}}. If {{param|#.Enable}} is {{false}}, then ARP
is considered disabled for this interface regardless of this parameter's value.
The status of this {{object}}. {{enum}}
A value of {{enum|Error_Misconfigured}} indicates that the referenced
{{param|#.Interface}} is not a valid reference to an IPv4-capable interface.
The base time in {{units}} for how long a dynamically learned entry in the ARP cache is
considered valid and reachable. This corresponds to the ARP cache aging time discussed in
{{bibref|RFC1122}}.
The maximum number of ARP requests to send before considering an address unreachable, as
discussed in {{bibref|RFC1122}}.
The interval in {{units}} between consecutive ARP requests, as discussed in
{{bibref|RFC1122}}.
Enables or disables Proxy ARP, as defined in {{bibref|RFC1027}}, on this interface.
{{deprecated|2.21|This profile is deprecated in favor of directly configuring parameters
under {{object|Device.NeighborDiscovery.InterfaceSetting.{i}.ARP.}}
and {{object|Device.NeighborDiscovery.InterfaceSetting.{i}.NDP.}} for improved granularity and
support for both IPv4 ARP and IPv6 NDP in a unified structure.}}