Computer gateway cannot be pinged. Analysis of reasons why pinging cannot be done to the gateway.

In modern network transmission, the gateway plays a very key role. It connects the LAN and the WAN, allowing network devices in the LAN to access the Internet. But when we use it, we may have trouble pinging the gateway. What's going on? Let’s take a look at the details below. Reasons why the ping command fails in the same network segment. There are two main situations. One is that the ip address in the same network segment cannot be pinged. The other is that the ip address in a different network segment cannot be pinged. Each situation is different. Let’s first Let’s look at two situations where ping fails on the same network segment. 1. Ping fails on the same network segment. The result is that the target host cannot be accessed. The destination IP and source IP are in the same network segment. The result of ping is that the target host cannot be accessed. The ping request is not sent. Let’s take a look at pinging an IP address that does not exist on the same network segment.

After the ping request is sent, the response shows that the target host cannot be accessed.
What’s the reason?
Explain that at this time, the ping request has not been successfully sent. At this time, you need to check:

When you encounter the problem of being unable to connect to the network, there are the following common issues to pay attention to: First, check whether the other party is powered on and ensure that the IP address exists . If there are switches across VLANs on the network, please check whether the intermediate trunk link is smooth. For direct routes, verify that they are set up correctly. Also, check if the direct route is being used by mistake and the default route should be used instead. Make sure the subnet mask and default gateway are configured correctly. For more details, please continue reading below and I will provide you with a more in-depth troubleshooting guide.

2. The ping fails in the same network segment, and the result is time out.
The destination IP and the source IP are in the same network segment. The ping result is time out or time out. The ping request has been successfully sent, but the target host No reply.

Cause of ping timeout

1. Check the firewall, the firewall may have blocked the response to the ping.
2. Check the subnet mask settings. Wrong settings may cause the device to not be in the same network segment.
3. Check the device hardware. Failure may result in the device not having a corresponding MAC address and failing to generate a routing table and pass the default route.
4. Check if the IP address conflicts or is not on the same network segment as the directly connected router.
5. Check if the gateway settings are correct.

The reason why the ping fails across network segments

The target host cannot be accessed

The reason why the ping fails across network segments may be because the request was not sent successfully and the target IP address and MAC address cannot be obtained.

Possible reasons are:

1. The destination IP address does not exist.
2. Check whether there is a default route in the routing table.
3. Check the ARP table for the gateway’s MAC address.
4. There is a gateway setting error.
5. Goed to the default route.

2. The cross-network segment ping fails, and the result is time out

If time out is displayed, it means that the ping request message has been sent, and the gateway of the destination IP has obtained the MAC address of the destination IP, but the destination host has not responded. , or the source host cannot receive it. These should check the backhaul route and the node backhaul route.

Possible reasons are:

1. Check the firewall to see if it intercepts the ping request message.
2. Check if the route through the node is correct or if there is a backhaul route.
3. The hardware network card outlet of the return route and the inlet network card of the ping request are not the same.
4. All the interfaces corresponding to the switch vlan are down, causing the vlan status to be down, and the corresponding route for the vlan is not generated.

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