Connectivity Guide

Version Description
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
ip dhcp relay secondary-subnet
Enable DHCP relay secondary- subnet on all the interfaces.
Syntax
[no] ip dhcp relay seconday-subnet
To disable the dhcp relay secondary- subnet, use theno ip dhcp relay secondary-subnet
command.
Defaults Disabled.
Command Modes CONFIGURATION
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
9.7(0.0) Introduced on the S4810, S4820T, S6000 and Z-Series.
Example
Dell(conf)# ip dhcp relay secondary-subnet
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 slot/port information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
● For a port channel interface, enter the keywords port-channel then a
number.
Defaults None
556 Dynamic Host Configuration Protocol (DHCP)