Rush PC Wizard Advances Questions about Routers, Switches, and ADSL

1.You don't have to pay for another machine.

2.Open one and the others can be on.

3.Choose a 5-port home router, **80 yuan, TP-link 100 yuan.

4.Read the manual, enter, enter admin and password admin to enter, set IP Internet access, and connect the main line to the WAN port.

5.All other machines are automatically assigned IP and then connected to the LAN port.

6.All use ordinary network cables (parallel lines), no need to cross wires.

Telecom won't send you a route, will it?! It's an ADSL terminal, right? Buying a sohu router can realize the simultaneous access of several machines, which is how I can access the Internet at the same time for two machines at home.

Wiring from the ADSL terminal to the routing entrance, and then connect the machine to the Internet to the router respectively. On any machine connected to the router, you can set up a dial-up Internet access according to the routing manual, and you can access the Internet every time you turn on the phone in the future, without dialing. This should be the most convenient and money-saving solution, and the route costs dozens of yuan.

The simplest and least expensive is to use, one of your multiple computers with better performance is set up as a server, and the other machines use that machine to access through **.

Another way is that you buy a TP-ling router, enter, enter admin and password, admin enter, set your login and password, and then change the password of admin, and finally restart the router, and other machines will connect the line to the router, and you can access the Internet. If there are more than one, you can use the uplink port of the router and the uplink port of the switch to connect them with one wire, and the other wires are connected to the switch, which is OK.

You have to ask whether telecom can share the Internet, if he has a restriction on the front-end, it will be difficult to achieve.

Your IP is restricted!! If you want to connect to the local area network, you need to add the IPX SPX protocol!!

Maybe your landlord doesn't understand, but it is estimated that the technician who installed the route will lose 0 when setting up the traffic

It's like a networked exam question.

The crux of the problem: Different network segments can be interconnected at will.

The router is equipped with only LAN ports. The LAN port is connected to the switch.

The WAN port of the router is connected to the switch, and the WAN port is configured to be on the same network segment as the LAN port of A, and the LAN port is configured at the same time, which is not in the same network segment as A. And do port mapping for 4 machines in the same network segment as B.

The LAN port of the router is connected to the switch.

The computer is divided into two groups, and the two network segments are equipped with IP. At the same time, it is connected to the switch.

5.When a machine in the same network segment as the LAN port A accesses a machine in the same network segment as the LAN port B, the port number must be added. If a machine in the same network segment as B accesses segment A, it can access it directly.

6.Machines in the same network segment can directly access each other.

OK If you need to access the Internet, you only need to match the WAN port of A with the account password. Two network segments, Internet access at the same time, and free access to each other.

To add, if you don't go online, you can remove the A router. One switch, one router, and two network segments can access each other at will.

It's simple.

Router A connects to the IP address of the port on this network segment: is the gateway).

Router A connects to the IP address of the port of the switch: set it casually) Router A sets a route: IP route

Router B connects the port IP address of this network segment: is the gateway).

Router B connects to the IP address of the port of the switch: set it casually) Router B sets a route: IP route

So that they can communicate with each other.

Remember to adopt it.

Don't know what kind of router your router is, is it a Cisco standard router?

If there are two routers and the two network segments are interconnected, they do not need the switch at all.

If each LAN port of your router can be configured with a network segment, 6 routers and 6 network segments can be interconnected without a switch. You don't even need a WAN port. Unless you don't have enough ports on your router.

If you can't configure a network segment for each LAN port on your router, everything will be in vain. If it can't be matched, is it still a router in the real sense?

The method of both hands on the keyboard is correct, but it is not necessary that the WAN ports of your two routers are connected to the switch, just connect directly.

This problem is not difficult as long as it is supported by your device! **It has been transmitted, no need for two routers, with one router, one switch can be divided into n network segments, as long as your switch supports the division of VLAN, the router supports sub-interfaces.

2 Move the interface to the corresponding VLAN and configure the IP address and default gateway for the host.

3 Set the encapsulation mode of the interface connected between the switch and the router to trunk mode and dot1q in encapsulation mode.

4 Divide the sub-interface on the corresponding port connected to the router and the switch, and configure Encapsulation dot1q under the corresponding sub-interface, and configure it as the default gateway address of the corresponding VLAN. If there are several VLANs, several sub-interfaces are divided.

If it is supported, I can guarantee it, for sure!If there's something you don't understand, you can ask me again, I feel like my answer may not be helpful......

If the switch has 4 ports, it can connect to three hosts, and the other port can be connected to a route, and the route has four ports, which occupies one, and the remaining two can be connected to two, and the other route can be used as a switch to connect to the route.

If you don't go online, there is only one route, don't connect to the WAN port without going online, the computer is connected to the router LAN port, leave one to the switch, use a network cable switch to connect the route, and then connect the rest of the computer to the switch, leave an port to another switch, connect two switches with a network cable, and connect the rest of the computer to another switch.

1. It is definitely not possible for both routers to be connected to the switch, unless the service provider gives you two accounts to use at the same time!

Second, the correct approach, a router WAN access service provider's network, and set up correctly, set the DHCP part to, and set a reserved address to;It is connected to a switch, the switch is connected to 4 users and another router, this router is set to the WAN part of the IP address, the gateway is set to, the LAN is set to, and 4 users can be connected to it. Disable the firewalls that come with the two routers.

If the subnet mask of all users is set, 8 computers can access each other!

。。。You don't have to be so troublesome, just use a network segment.

Connect like this: Routing - Routing Switch - Computer. The second route can actually be used as a switch.

The first route is connected to the second route, and the LAN port is connected like a switch. The WAN port of the second route is not used.

1. The switch is a Layer 2 device, so it cannot be separated, the MAC address table belongs to Layer 2, and the broadcast domain belongs to Layer 3.

2. The router splits the broadcast domain because it can distinguish the Layer 3 network.

3. VLAN is a virtual network, which is to logically separate physical devices in Layer 2 devices to achieve multiple networks for one device.

4. A logical network means that there is a physical connection or no connection, but there is a connection in the device, but it is not necessarily connected.

5. Because the router is a special device, and its interfaces are relatively few, the switch has many interfaces and a large backplane bandwidth, so the router cannot replace the switch, and if you need to better divide the broadcast domain, you can use the layer three switch.

It would be a long time to fully explain these concepts ...

You need to know what each computer does, what the switch does, and what the router does when it communicates with another computer on the same network segment and with computers on different network segments. Figuring out what is above is not a problem. For example:

1。Switches can split broadcast domains. A managed switch can be divided into multiple VLANs, and each VLAN is a broadcast domain.

A broadcast domain is the range that a broadcast packet can reach, and the MAC table is a record used by the switch to remember which MAC address is connected to which port of its own.

1. The switch is a physical connection, relying on the MAC address, and the MAC table is the mapping relationship between the MAC and the IP address, and there is no routing function.

2. The router is connected by IP address, which belongs to the logical layer and can divide the network 3, and the VLAN is the virtual LAN that is logically divided, and the actual physical LAN is the same as the actual physical LAN from the client.

4. Logical network refers to the network above MAC. That is, the network above the switch.

5. The router cannot replace the switch, because although the router has the routing function, the net function is very weak, and now the router is replaced by the layer 3 or layer 4 core switch.

Layer 3 switch vlans can split conflict domains.

The network is divided into 7 layers: application layer, presentation layer, session layer, transport layer, network layer, data link layer, and physical layer.

1. The broadcast works at the network layer, and the switch and MAC address work at the data link layer, so the switch cannot divide the broadcast domain (the Layer 3 switch can).

2. The router works at the network layer, so it can.

3. VLAN (Virtual Local Area Network) is a virtual LAN that separates networks.

4. Personal understanding The logical network is similar to a virtual LAN like VLAN 5, routers and switches work in different 7 layers, so the nature of the two works cannot replace each other (if the layer 3 switch replaces the router, I can understand) Note: For reference only If there is anything wrong, please forgive me.

VLAN is pretty much what subnet means. The router is a Layer 3 device. Generally, a switch is a Layer 2 device.

Each has its own function. How can it be said to replace? Can your hands replace your feet?

So you can do without your feet? It is recommended to take a look at the tutorial on the basics of networking.

1. For communication in different network segments, as long as there is a route, it has nothing to do with what equipment passes through, and the firewall can also configure the routing protocol.

2. The same network segment does not need a router, just use the MAC address**, and the fool switch can complete it3. The main role of the switch is multi-terminal access, so the switch has 24 ports and 48 ports at every turn, and the main role of the router is routing**, the router supports rich routing protocols, etc., generally enterprise-level routers are Layer 3 interfaces, and the number of interfaces is very small, for example, Huawei AR2220 only has 3 interfaces.

4. The biggest difference between a switch and a router is NAT, although some Layer 3 switches also have this function, but the NAT is generally a router, if you take the switch as a NAT, you must have a NAT board, and the configuration is much more complex than the router.

Theoretically, a switch can only have 3 layers, and the router itself integrates the functions of the switch. The router can be hung under the router, the router and the switch are used in no order, I don't understand what it means, the functions of the router and the switch are different, the router can be used as a switch, but the switch cannot be used as a router, there is no sequential relationship, just configure and match according to the functional requirements.