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User Guide for QUANTUM NETWORKS models including: QN-SW225-24P Network Switch, QN-SW225-24P, Network Switch, Switch
Feb 2, 2025 — User Guideline. The operational status of DHCP Relay on an interface is active if one of the following conditions exist: DHCP Relay is globally enabled, ...
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DocumentDocumentNetwork Switch CLI Guide DHCP Relay Commands Contents DHCP Relay Commands ....................................................................................................... 3 ip dhcp relay enable (Global)..................................................................................................... 3 ip dhcp relay enable(Interface) ................................................................................................ 4 ip dhcp relay address (Global) .................................................................................................. 5 ip dhcp relay address(Interface) ............................................................................................. 6 show ip dhcp relay ......................................................................................................................... 7 2 | www.qntmnet.com DHCP Relay Commands ip dhcp relay enable (Global) Syntax ip dhcp relay enable no ip dhcp relay enable Parameters N/A. Default Configuration DHCP relay feature is disabled. Command Mode Global configuration mode. Usage Use the ip dhcp relay enable Global Configuration mode command to enable the DHCP relay feature on the device. Use the no form of this command to disable the DHCP relay feature. Example The following example enables the DHCP relay feature on the device. switchxxxxxx(config)# ip dhcp relay enable User Guideline The TFTP or SCP protocol is used to download/upload a configuration file. 3 | www.qntmnet.com ip dhcp relay enable(Interface) Syntax ip dhcp relay enable no ip dhcp relay enable Parameters N/A. Default Configuration Disabled. Command Mode Interface Configuration mode. Usage Use the ip dhcp relay enable Interface Configuration mode command to enable the DHCP relay feature on an interface. Use the no form of this command to disable the DHCP relay agent feature on an interface. Example The following example enables DHCP Relay on VLAN 21. switchxxxxxx(config)# interface vlan 21 switchxxxxxx(config-if)#ipdhcprelayenable User Guideline The operational status of DHCP Relay on an interface is active if one of the following conditions exist: DHCP Relay is globally enabled, and there is an IP address defined on the interface. Or DHCP Relay is globally enabled, there is no IP address defined on the interface, the interface is a VLAN, and option 82 is enabled. 4 | www.qntmnet.com ip dhcp relay address (Global) Syntax ip dhcp relay address ip-address no ip dhcp relay address [ip-address] Parameters ip-address--Specifies the DHCP server IP address. Up to 8 servers can be defined. Default Configuration No server is defined. Command Mode Global Configuration mode. Usage Use the ip dhcp relay address Global Configuration mode command to define the DHCP servers available for the DHCP relay. Use the no form of this command to remove the server from the list. Example The following example defines the DHCP server on the device. switchxxxxxx(config)# ip dhcp relay address 176.16.1.1 User Guideline Use the ip dhcp relay address command to define a global DHCP Server IP address. To define a few DHCP Servers, use the command a few times. To remove a DHCP Server, use the no form of the command with the ip-address argument. The no form of the command without the ip-address argument deletes all global defined DHCP servers. 5 | www.qntmnet.com ip dhcp relay address(Interface) Syntax ip dhcp relay address ip-address no ip dhcp relay address [ip-address] Parameters ip-address--Specifies the DHCP server's IP address. Up to 8 servers can be defined. Default Configuration No server is defined. Command Mode Interface Configuration mode. Usage Use the ip dhcp relay address Interface Configuration (VLAN, Ethernet,Port-channel) command to define the DHCP servers available by the DHCP relay for DHCP clients connected to the interface. Use the no form of this command to remove the server from the list. Example The following example defines the DHCP server on the device. switchxxxxxx(config)# interface vlan 21 switchxxxxxx(config-if)#ipdhcprelayaddress176.16.1.1 User Guideline Use the ip dhcp relay address command to define a DHCP Server IP address per the interface. To define multiple DHCP Servers, use the command multiple times. To remove a DHCP server, use the no form of the command with the ip-address argument. The no form of the command without the ip-address argument deletes all DHCP servers. 6 | www.qntmnet.com show ip dhcp relay Syntax show ip dhcp relay Parameters - Default Configuration No file name. Command Mode User EXEC mode. Usage Use the show ip dhcp relay EXEC mode command to display the DHCP relay information. Example The following example gives an example of the command output: switchxxxxxx# show ip dhcp relay DHCP relay is globally enabled DHCPrelayisenabledonPorts: Inactive: po1-2 DHCP relay is enabled on VLANs: 1, 2, 4, 5 Active:1,2, 4,5Inactive: Global Servers: 1.1.1.1 , 2.2.2.2 VLAN 1: 1.1.1.1, 100.10.1.1 VLAN 2: 3.3.3.3, 4.4.4.4, 5.5.5.5 VLAN 10: 6.6.6.6 User Guideline - 7 | www.qntmnet.com 8 | www.qntmnet.com