12/25/2022 0 Comments Ping transmit failed general failure![]() ![]() Step3: Configure Telnet on Router R1: ….Step2: Configure Routing on Both Routers.Step 1:Configure IP Address on routers.Pathping, which Windows install default, is useful tool. It is a good idea to check which IP on the route is slow response It does not take up to 3 seconds of timeout, but something is wrong when " ICMP Echo Reply returns over 1 second". If you want to check the occurrence of the routing loop, use tracert to investigate. There is a possibility that "There are too many NW devices to go through", but now it is a good level to think that it is impossible. The cause of this case is usually a routing loop occurring somewhere. At the time when it is discarded, ICMP Time Exceeded is notified to the source IP address from the NW device. When a TTL = 1 packet arrives at the router and further routing is required (when the destination IP address is not the NW address connected to the NW device), TTL = 0, and the packet is discarded at the NW device It will be. When routing, decrease the value of TTL field of IP header by one. Whether timing problems or applications of security software were suppressing transmission, there are a variety of causes.Īs an example, it will be displayed if you change the IP of the interface while pinging with ping -t. This is displayed when Windows can not send an ICMP Echo Request, but the reason is unknown. Ping statistics for 192.168.179.15: Packets: Sent = 4, Received = 2, Lost = 2 (50% loss) transmit failed. Reply from 192.168.179.4: Destination Host Unreachable. If this message is shown, it means "Although ICMP Echo Request was sent to the destination IP, but the "Host Unreachable" code in "ICMP Destination Unreachable" is returned from the NW device in the middle of the route (instead of returning the ICMP Echo Reply packet from the destination IP).Ĭ:>ping 192.168.179.15 -w 1001 Pinging 192.168.179.15 with 32 bytes of data: Request timed out. It is because there is a part where communication does not pass through the firewall etc of the NW device, or the ICMP is stopped by Windows firewall, firewalld, security software on the opposite host side.Įxceptionally, in the case of Ping within the same segment, it is displayed like this even if there is no ARP response from the destination host. In this state, it can not be determined whether ICMP Echo Request is packet loss in the middle of the route or ICMP Echo Reply is packet loss. If this message is shown, it means "Although ICMP Echo Request was sent to the destination IP, the ICMP Echo Reply did not return for the timeout (default 3 seconds) elapsed" If you can not understand below, please learn about the following two about ICMP.Ībout ICMP and ICMP type and codes Request timed out The cause depends on the displayed result. I will describe it later, Even if it is not the ICMP Echo Reply from the destination IP (even in Destination Unreachable), if any ICMP packet is received, it will not be counted as a loss. "Lost = 0" means "In response to ICMP Echo Request transmitted multiple times (default 4 times in the above example), any kind of ICMP packet was received each time". If you sent "ICMP Echo Request" to dst IP and are received "ICMP Echo Reply" from the IP, it is displayed as above regarded as success. ![]()
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