Cisco routers cannot reach across network segments

Both network segments are on one router, and they can be connected directly, and there must be a direct connection between these two network segments on this router, so it can be connected directly. If not, check whether the gateways on the three computers are not configured correctly.

If you can communicate between the two routes.

It should be fine.

If it doesn't work. I guess your PC didn't write the gateway.

The PC0 you draw on the picture is a 16-bit mask.

Whereas, route 0 is 8 bits.

I'll be able to get through it by checking it myself.

According to your description of the phenomenon, it should be that your PC does not have a gateway

The main function of the router is to solve the connection between different network segments. So the cross-segment access you are talking about is the strong point of the router.

In the advanced configuration of routers, there is usually a "static route" configuration option, which can achieve cross-network segment access after the correct route is configured. The usual command rule format is:

IP Route Destination Network Mask Next-hop IP or outbound interfaceFor example, if you say you need to access the network, the destination network is the mask IP address that is directly connected to the peer router (next-hop IP).

Then make a static routing table separately.

The first floor answered yes, but the step of doing static routing can be omitted, because after two IPs are assigned to two ports on the router, two direct route entries will be automatically generated in the routing table. Steps:

1. Two ports on the router are equipped with IPs

2. The two computers are respectively equipped with the IP of the same network segment as the corresponding port and set the gateway to the IP on the corresponding router port

Configure a single-arm router PC1 to VLAN 10 F0 1 PC2 to VLAN 20 F0 2 Switch ports connected to the router with trunk F0 24 Switch configuration EN conf (tab complement) VLAN 10 VLAN 20 int F0 1 SWI acc VLAN 10 int F0 2 SWI acc VLAN 20 int F0 24 SWI M t Router configuration connect F0 0 no en conf int F 0 0 no shutdown int f0 enca do 10 ip add no shutd int f0 enca do 20 ip add no shutd (abbreviated as all commands: press tab to complete).

Didn't anyone find out? The main line of the building is connected to the wrong one, and the host and router belong to the same kind of equipment, so the crossed line of the dotted line should be used instead of the straight line.

How do you conduct the address test?

How is the IP address and subnet mask set for the host being tested?

ip route fastethernet0/0

What's the point? Check to see if your host IP address subnet mask is not 254

The subnet mask is not set up

The DNS server of the bar Feixun and TP routing is set to the IP address of the cat、That is, you can access each other。

There is no need for trunk links between Layer 3 switching.

Trunk is a Layer 2 switching technology, you use a Layer 3 switch as a gateway, and the data must be Layer 3 switching between Layer 3 switches, that is, route exchange.

If you configure a trunk, it will affect the route.

The interface between the Layer 3 switches is changed to a routing port, an IP address is allocated, and then it is announced again from the OSPF process.

Look at your diagram to see that the interface of the router is not started, are you not using the no sh to start the interface under the interface? In addition, use SH IP ROU on the router to show whether the router has obtained all the route segments.

This is a simple static route configuration job. Just remember one thing: static routes need to be configured on all routers for non-direct segments.