CISCO ACCESS TO THE WAN

Set the WAN to static IP mode.

Configure a fixed IP address

Subnet mask. Gateway. dns

No, you just need to set up DNS on your PC, and the router will ** all DNS requests.

Both WAN use PPOE dialing, and then use policy routing to forcibly specify the next hop, if this is the case, it is recommended not to choose load balancing, because load balancing is divided into many modes, such as how much traffic from the active and standby or the main is forcibly jumped to the other Danmin line, so it will conflict with your policy route.

My advice is not to set up PBR if you are load balancing, and not to load balance if you are using PBR.

Also, it's important to take into account your DNS on the other side when you manually set up PBR for routing

For example, if you make a route like this, the next hop is which ADSL is above, then you need to make sure that the DNS of the ADSL below you is not on this segment.

And I see that you have a problem with the topology diagram How can your two ADSL cats be on the same network segment, so how to configure your 3640 WAN port? By default, the addresses of the two WAN ports cannot be in one segment, so it is recommended that you set the two ADSL in the network segment that you don't use, and then use the module branch strategy or route to specify the next hop out.

I've done several of these projects, and it's absolutely fine.

Let's put aside the topology of the socks destruction,You can directly see if the ping is passable,If the network fails, there is no reason to only open the home page。

If the ping is smooth and the packet loss is not serious, I suggest you see if there is a problem with your machine, and you can check the solution to the potato spring that cannot be opened on the level 2 page on the Internet.

And I forgot to tell you that you see if 3640 has a return visit route check, because I am not familiar with this device, my ** kind of firewall has this function, that is, it will be verified when there is an asymmetric route, if you turn on this function, there may be serious packet loss.

ip route

ip route

Your two routes are completely wrongly written, which will definitely cause the router to be unable to choose the route and the one-hop route will be invalid.

Your destination address must be specified, not both.

Then I ask you, for example, if you are going to this address then you will go out from or. 2 out.

It's a problem with the settings, there may be a wrong option when setting up the router, take a good look at it yourself! It's mostly a matter of routing settings! First of all, the options in the route are confirmed, and then the case of the account input is the case, these details must be paid attention to!

You can connect the route to the computer to confirm that there is no problem, if there is no problem, it is a problem with the route.

Did you set up the Cisco one, did you set up the PPPOE dial-up? It's right to connect the main line to the WAN port, which is the same as a general home router.

These two interfaces are not the same, and the distinction is as follows:

The WAN interface of the broadband router is actually an Ethernet port, but it can run the PPP protocol on it, so it is encapsulated in PPPoE mode.

The WAN interface of an enterprise-class router is an interface to connect to a remote network, and its encapsulation methods are in many ways, such as DHCP, PPP, and other protocols. Its biggest feature is that it can connect to many types of WANs.

1 Difference The logic layer of serial port and RJ45 is not much different, both are PPP protocol, but RJ45 encapsulates PPP protocol package with Ethernet frames, so you can see the term PPPoE (PPP over Ethernet) when dialed by broadband routers. On the physical layer, it seems that the difference is obvious, and you can not pursue the actual one. The network layer, which is the IP layer, is the same.

2 How does Cisco connect cats? Yes, there are cats, some are built into the router, and some are external. This cat is generally a baseband cat, not a broadband cat, that is, the frequency of the signal wave is relatively single, as if CCNA does not make requirements.

3 Cisco's Fast Ethernet ports can be configured with IP addresses, and each interface is a network segment. An ordinary broadband router is actually a combination of a dual-port router and a switch, and the ordinary router has only two network segments, and all the ports of the LAN port form a network segment, and it has a built-in NAT (Network Address Translation function), so there is no need to set NAT in detail. There is no need to set a routing table for two network segments, and only B can go out from A and vice versa, so you don't need to set IP for each port.

However, the operating software inside a normal broadband router must be able to identify different ports. The LAN port of ordinary broadband routers generally shares one, of course, it can be modified. The IP address of the WAN port of a common broadband router is obtained by the PPP protocol.

Even if Cisco's classic router only has two ports, you have to set all the parameters, of course, three or four more ports can be, and when there are more than two, the routing table routing protocol really comes into play.

Landlord, I haven't done this for four years, it's all from memory, I'm old, I can only say so much. It's not clear, ask ZTE's brothers and sisters, they are all masters.

1. Port form and Layer 2 provision.

Although your questions look a little silly, they are all the most basic, but there are a few people who can really explain them, and I haven't played this kind of high-end goods like Cisco.

2. The interface mode of the 2nd end should be the same, show inter, the switch 100 1000M adaptive only has WAN mode;

3,2 Layer 2 switch is equivalent to a network cable direct router, how do you say he is connected to the Internet?

I would like to ask you what is the automatic or missing IP address of the WAN port? Where is the fixed IP of the local area network? And one last question, friend, have you tried to make a wins setting to try!

One WAN port can only be connected to one ISP line.

If there are two WAN ports, you can connect two ISP lines at the same time, for example, to connect China Telecom and Netcom at the same time to achieve dual-line Internet access. Or connect to the telecom line at the same time to achieve load balancing.

As for large routes such as Cisco and H3C, he does not have a clear distinction between WAN and LAN. When you work in NAT mode, it is a LAN port; When you work in route mode, it becomes a WAN port.

Two WAN ports can be connected to two lines, such as access to 1 Netcom and 1 telecom, which solves the problem of north-south communication.

In addition, it can also form a dual-line load and backup, that is, distribute the data over two lines for transmission. Increase network throughput. Dual-line backup means that when one line fails, it automatically switches to the other! ~~

More than one large route with many WAN ports.

Some even go straight to the optical port.

If the router is in the aggregation layer, it may not be just one device connected to the backbone layer, so multiple upstream ports are set up.

That's for routers, which is needed for large networks.

That's the rhythm of death, don't play like that. If you don't use the BGP protocol with the ISP, then tens of thousands of static routes need to be configured on the router, and you have to manually modify every change, are you willing to do it? The bottom line is that you don't have a channel to be notified of changes, except for user complaints.

The simplest way to do this is to interconnect with each operator back-to-back, i.e., in a three-layer manner. The router still uses Cisco, the default two interfaces are OK, use the sub-interface, the router starts PBR, your switch also has to support Linux, configure 4 external IPs, and still use PBR on the host. If you can't, then you have to go to training, 50 points can't work, 500,000 points can't work, because you can't write.

You put nat inside on the vlan 2 interface, I'm not sure if this will work on the virtual interface.

Your WAN port is a Layer 3 port, and you will definitely not be able to communicate with the terminated switch.

If you don't understand, draw a topology picture.