DHCP proxy feature of the access network

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Dynamic Host Configuration Protocol (DHCP) proxy is a process in which an access device performs proxy operations on the DHCP packets exchanged between the DHCP server and clients, that is, modifying the DHCP packets based on certain requirements. DHCP proxy can implement the functions of server ID proxy and lease time proxy.

Other related questions:
ARP proxy feature of the access network
When a PC sends an Address Resolution Protocol (ARP) request to another PC, the request is processed by the access device connected to the 2 PCs. This process is called ARP proxy. ARP proxy is often used for communication between the sub virtual local area networks (VLANs) in a super VLAN.

Problem and solution when the firewall cannot access web proxy resources
What if the web proxy resource page cannot be accessed? Solution: 1. Check whether the configured URL is correct. 2. If the configured URL is correct, ensure that the configured intranet URL can be properly accessed. 3. If the fault persists, try the web link mode. Note: To ensure that the web link function takes effect, use Internet Explorer and install the ActiveX control.

Reasons why the PC that has obtained an IP address from the DHCP server cannot access the Internet on S series switch
For S series switches (exclude S1700 switches), in normal situations, a PC can access the Internet after obtaining an IP address through DHCP. However, if the IP address is assigned by a bogus DHCP server, the PC cannot access the Internet with the incorrect IP address. If this problem occurs, you are advised to configure DHCP snooping on the Layer 2 access device or first DHCP relay agent from the device, to ensure that PCs can obtain correct IP addresses. - When you configure DHCP snooping on a Layer 2 access device, steps 1, 2, and 3 are mandatory and must be performed in sequence. - When you configure DHCP snooping on a DHCP relay agent, only steps 1 and 2 are required. 1. Enable DHCP snooping globally. [HUAWEI] dhcp enable [HUAWEI] dhcp snooping enable 2. Configure the interfaces connected to DHCP clients. Perform the configuration on all interfaces connected to DHCP clients. GE0/0/1 is used as an example. [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] dhcp snooping enable [HUAWEI-GigabitEthernet0/0/1] quit 3. Perform the configuration on interfaces connected to the DHCP server. GE0/0/2 is used as an example. [HUAWEI] interface gigabitethernet 0/0/2 [HUAWEI-GigabitEthernet0/0/2] dhcp snooping trusted [HUAWEI-GigabitEthernet0/0/2] quit

USG6000 DHCP typical networking
The USG6000 DHCP adopts the client/server mode. The DHCP client dynamically requests for network configuration information from the DHCP server, and the DHCP server returns the corresponding configuration information (IP address, subnet mask, and default gateway) based on configured strategies. The typical DHCP network includes the following roles: ?DHCP Client: Device requesting for network parameters such as IP address using the DHCP ?DHCP Server: Device allocating network parameters to the DHCP client and processing address allocation, address lease renewal, and address release requests from the DHCP client or DHCP relay ?(Optional) DHCP Relay: Device forwarding DHCP packets between the DHCP server and the DHCP client, and assisting the DHCP server in dynamically allocating network parameters to the DHCP client

Accessing the management network port
For details about how to log in to the iMana CLI and WebUI, see the iMana User Guide (Link). For details about how to log in to the iBMC CLI and WebUI, see the iBMC User Guide (Link). Use HTTPS to access the WebUI. Enter https://bmc_ip_address/ in the browser's address box and press Enter. It is not recommended that you enter "bmc_ip_address" in the browser's address box and press Enter. If you enter only the IP address, HTTP will be used by default. The login may fail because HTTP poses security risks.

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