Users Guide

Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.1 Introduced on the S4810.
Usage Information
Neighbor Discovery Protocol for IPv6 is defined in RFC 2461 as part of the Stateless Address Autoconfiguration
protocol. It replaces the Address Resolution Protocol used with IPv4. It defines mechanisms for solving problems,
such as:
• Router discovery: Hosts can locate routers residing on a link.
• Prefix discovery: Hosts can discover address prefixes for the link.
• Parameter discovery .
• Address autoconfiguration — configuration of addresses for an interface .
• Address resolution — mapping from IP address to link-layer address.
• Next-hop determination.
• Neighbor Unreachability Detection (NUD): Determine that a neighbor is no longer reachable on the link.
• Duplicate Address Detection (DAD): Allow a node to check whether a proposed address is already in use.
• Redirect: The router can inform a node about a better first-hop.
Use the ipv6 neighbor command to manually configure the IPv6 address of a neighbor to be discovered by the
switch.
show ipv6 neighbors
Display IPv6 discovery information. Entering the command without options shows all IPv6 neighbor addresses stored on the control
processor (CP).
Syntax
show ipv6 neighbors [vrf vrf-name] [ipv6-address| interface interface]
Parameters
vrf vrf-name (OPTIONAL) Enter the keyword vrf and the name of the VRF to display the neighbors
corresponding to that VRF.
NOTE: If you do not specify this option, neighbors corresponding to the
default VRF are displayed.
ipv6-address Enter the IPv6 address of the neighbor in the x:x:x:x::x format.
NOTE: The :: notation specifies successive hexadecimal fields of zero.
interface interface Enter the keyword interface then the interface type and slot/port or number
information:
• For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the
slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port information.
• For a Management interface, enter the keyword managementethernet followed by
slot/port numbers.
• For a Port Channel interface, enter the keywords port-channel followed by a number.
Neighbor Discovery Protocol (NDP) 873