Ip helper-address global vs ip helper-address

1. What is IP helper address global?
2. What is the difference between IP helper address and IP DHCP relay?
3. What is IP helper address in Cisco router?
4. What is IP Helper address used for in DHCP?
5. What does global IP address mean?
6. How many IP helpers can you have?
7. Is ip Helper necessary?
8. What is difference between DHCP relay and DHCP server?
9. Under which circumstance should an ip helper address be used?
10. How does Cisco IP helper-address work?
11. What is IP helper-address in VLAN?
12. Is it okay to disable IP Helper?
13. What is IP helper source address?
14. What can you do with a global IP?
15. Under which circumstance should an IP helper address be used?
16. Why you shouldn't show your IP address?

What is IP helper address global?

The IP helper-address is a command issued at the interface level, on the interface of incoming broadcasts, and its purpose is to forward UDP broadcasts on (as routers DO NOT forward broadcasts) to other routers in Unicast format.

What is the difference between IP helper address and IP DHCP relay?

IP helper address: It's the address of DHCP server located in another LAN from which hosts, DHCP request will be answered. 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 IP helper address in Cisco router?

The ip helper-address command is generally used to configure a DHCP Relay Agent on a Layer 3 interface on a Cisco IOS device.

What is IP Helper address used for in DHCP?

Defines the address of a remote DHCP server or DHCP relay agent. Up to eight addresses can be defined. The DHCP agent forwards DHCP client requests to all defined servers.

What does global IP address mean?

A global IP address is meant to be publicly accessible from the Internet. A local-scope IP address is not routable to the Internet. This means that if your device is assigned local-scope address, your device will not be able to access the Internet, however you will still be able to access campus network resources.

How many IP helpers can you have?

You can configure up to 4000 IP helper addresses on a routing switch. The helper addresses are shared between the DHCP relay agent and UDP forwarder feature. A maximum of sixteen IP helper addresses is supported in each VLAN.

Is ip Helper necessary?

Usually, the only people who'd ever need to use IP Helper are software developers working with IPv6 connections, specialized networks, or accessing online databases with specific connection requirements.

What is difference between DHCP relay and DHCP server?

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.

Under which circumstance should an ip helper address be used?

You only need to use ip helper-address when your DHCP server is on a different subnet.

How does Cisco IP helper-address work?

The ip helper command works by changing a broadcast message to a unicast message. It is common to have multiple DHCP servers on your network, as in Figure 3.5, for fault tolerance. You can configure multiple entries of the command with different IP addresses as shown in Listing 3.3.

What is IP helper-address in VLAN?

DHCP IP Helper addresses are IP addresses configured on a routed interface such as a VLAN Interface or a routers Ethernet interface that allows that specific device to act as a “middle man” which forwards BOOTP (Broadcast) DHCP request it receives on an interface to the DHCP server specified by the IP Helper address ...

Is it okay to disable IP Helper?

It's completely safe to have running, and best left alone unless you have a reason to stop or remove it. If you notice IP Helper taking up a significant amount of memory, there are several ways to disable the service. If you choose to disable it, stopping IP Helper is safe and shouldn't affect your system adversely.

What is IP helper source address?

DHCP IP Helper addresses are IP addresses configured on a routed interface such as a VLAN Interface or a routers Ethernet interface that allows that specific device to act as a “middle man” which forwards BOOTP (Broadcast) DHCP request it receives on an interface to the DHCP server specified by the IP Helper address ...

What can you do with a global IP?

Having a public IP address on your router enables you to set up your own server, access your computer remotely, and monitor your surveillance cameras from anywhere within the global network. Every public IP address on the Internet is unique to its host or server and cannot be duplicated.

Under which circumstance should an IP helper address be used?

You only need to use ip helper-address when your DHCP server is on a different subnet.

Why you shouldn't show your IP address?

Protection from hackers — Just as your ISP, search engines, and governments can follow you around by using your IP address, so can hackers. These nefarious entities may not just want to monitor your movements and may be able to learn your identity and location through the IP address.