Users Guide

ipv6 helper-address
Configures the ipv6 DHCP helper addresses without VRF.
Syntax
[no] ipv6 helper-address ipv6-address
To delete the ipv6 helper address, use the [no] ipv6 helper-address ipv6-address command.
Parameters
ipv6-address Enter the keywordipv6–address through which the server address can be
reached.
Default Disabled.
Command Modes INTERFACE
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
9.10(0.0) Introduced on the S6100.
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.
9.7(0.0) Introduced on the S4810, S4820T, S6000, S6000–ON, Z9000, and Z9500.
Usage
Information
Use this command on the interfaces where the DHCP clients are connected to forward the packets from
clients to DHCP server and vice-versa.
Example
Dell(conf-if-te-1/1/1/1)# ipv6 helper-address
X:X:X:X::X IPv6 helper address
VRF VRF name.
Global Global address space
show ip dhcp snooping
Display the contents of the DHCP binding table or display the interfaces configured with IP Source Guard.
Syntax
show ip dhcp snooping [binding | source-address-validation [discard-
counters [interface interface]]]
Parameters
Parameters Description
binding
Display the binding table.
source-address-
validation
Display the interfaces configured with IP Source Guard.
discard-counters
(OPTIONAL) Display the number of dropped packets.
interface
interface
(OPTIONAL) Specifies an interface to show the discard counters.
Enter any of the following keywords and the interface information:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the stack/slot/port/subport information.
● For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE
then the stack/slot/port/subport information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
stack/slot/port[/subport] information.
470 Dynamic Host Configuration Protocol (DHCP)