Configuring Relay on Windows

1. How to configure DHCP relay on Windows?
2. Is DHCP relay Same as IP Helper?
3. What is DHCP relay command?
4. What is the difference between DHCP and DHCP relay?
5. How do I check my DHCP relay?
6. Can Windows Firewall block DHCP?
7. What command configures a DHCP relay agent?
8. What ports does DHCP relay use?
9. What command configures a DHCP relay agent?
10. How do I find my DHCP relay?
11. Should I enable DHCP server relay?
12. How do I add IPv4 DHCP relay agent protocol?
13. What port does DHCP relay use?
14. What is DHCP VLAN relay?
15. What is IP relay address?

How to configure DHCP relay on Windows?

To enable DHCP Relay, you must enter the IP address of at least one DHCP Server. To do so, choose Add to display the DHCP Relay Agent dialog, enter the IP address, and choose Add. Windows NT copies the address to the DHCP Servers pane.

Is DHCP relay Same as IP Helper?

DHCP relay is used to forward DHCP broadcast requests on LAN as a unicast packet to a central server, while ip helper-address is the command used to enable DHCP relay in routers.

What is DHCP relay command?

DHCP is a client server protocol that automatically provides IP hosts with IP addresses and other related configuration information. A DHCP relay (agent) is a host that forwards DHCP packets between clients and servers that are not on the same physical subnet.

What is the difference between DHCP and DHCP relay?

The DHCP server feature allows devices on the same network as the SD-WAN appliance's LAN/WAN interface to obtain their IP configuration from the SD-WAN appliance. The DHCP relay feature allows your SD-WAN appliances to forward DHCP packets between DHCP client and server.

How do I check my DHCP relay?

Viewing the DHCP relay setting

Use the show config command (or show running for the running-config file) to display the current DHCP relay setting. NOTE: The DHCP relay and hop count increment settings appear in the show config command output only if the non-default values are configured.

Can Windows Firewall block DHCP?

If at least one of these two Windows Firewall settings is disabled, you can obtain an IP address from the DHCP server. If both of these two Windows Firewall settings are enabled, DHCP traffic is strictly blocked.

What command configures a DHCP relay agent?

A DHCP relay agent uses "ip helper-address" command to indicate the DHCP server's IP address. It will insert the IP address of the interface which has that command configured into the gateway IP address field of DHCP packet to let DHCP server know which IP address range should be used to allocate.

What ports does DHCP relay use?

The DHCP relay uses port 67 as both the source and destination ports to communicate with the DHCP server. The DHCP client has obtained the IP address of the DHCP server in the address allocation phase.

What command configures a DHCP relay agent?

A DHCP relay agent uses "ip helper-address" command to indicate the DHCP server's IP address. It will insert the IP address of the interface which has that command configured into the gateway IP address field of DHCP packet to let DHCP server know which IP address range should be used to allocate.

How do I find my DHCP relay?

Viewing the DHCP relay setting

Use the show config command (or show running for the running-config file) to display the current DHCP relay setting. NOTE: The DHCP relay and hop count increment settings appear in the show config command output only if the non-default values are configured.

Should I enable DHCP server relay?

The DHCP relay feature allows your SD-WAN appliances to forward DHCP packets between DHCP client and server. The following are the benefits of using the DHCP server and DHCP relay features: Reduce the amount of equipment at client site. Replace router at client site (Easy deployment of edge router services).

How do I add IPv4 DHCP relay agent protocol?

In the navigation pane, right-click DHCP Relay Agent, and then click Properties. 6. On the General tab, enter the IPv4 address of the DHCP servers that you want to provide DHCP services for the RRAS server's clients, click Add, and then click OK. the subnet to which this interface is attached and DHCP servers.

What port does DHCP relay use?

IPv4 DHCP relay traffic between relay and server is sent as UDP unicasts with source port of 67 and destination port of 67.

What is DHCP VLAN relay?

The DHCP Relay feature enables relaying DHCP requests from stations on a VLAN to an external DHCP sever. A DHCP Relay must be activated globally and per VLAN. In Layer 2 mode, DHCP Relay can run on a VLAN with an IP interface defined on it.

What is IP relay address?

Relay Agent IP address: The IP address sent by the PC (0.0. 0.0) is replaced with the downlink IP address of the DHCP relay agent (1.1. 1.254), the IP address of the relay agent's interface at which the DHCP Discover message was received.