The TTL value of a ping packet cannot be changed. Enable or correct the DHCP server, restart the local computer, and see if the networking problem persists. pathping < IP address of remote host > Note If your local address is returned as 169.254.y.z, you have been assigned an IP address by the Automatic Private IP Addressing (APIPA) interface Serial1 ip address 188.8.131.52 255.255.255.0 ! ! this contact form
While it is possible to configure more than one default gateway, gateways beyond the first are only used if the IP stack determines that the original gateway is not functioning. Payload The payload of the packet is generally filled with ASCII characters, as the output of the tcpdump utility shows in the last 32 bytes of the following example (after the Related Computer Tips: The Difference Between Static and Dynamic IP Addresses How to Find Your IP Address How to have both static and dynamic IPs settings at the same time Using Sending 5, 100-byte ICMP Echos to 184.108.40.206, timeout is 2 seconds: U.U.U Success rate is 0 percent (0/5) Jan 20 16:34:49.207: IP: s=220.127.116.11 (local), d=18.104.22.168 (Serial0), len 100, sending Jan 20
Ping Messages Explained
See Configuring Address Resolution Methods for a detailed explanation. For all the options about this command, see Trace (privileged). Updated: Nov 29, 2006Document ID: 12778 Contributed by Cisco Engineers Was this Document Helpful? The ping command first sends an echo request packet to an address, then waits for a reply.
Sending 5, 100-byte ICMP Echos to 22.214.171.124, timeout is 2 seconds: Jan 20 17:04:05.167: IP: s=126.96.36.199 (local), d=188.8.131.52 (Ethernet0), len 100, sending Jan 20 17:04:05.171: IP: s=184.108.40.206 (local), d=220.127.116.11 (Ethernet0), len Retrieved December 4, 2014. ^ "RFC 792 - Internet Control Message Protocol". When a packet destination is the router itself, this packet has to be process-switched. For A Web Page, Html Represents The: The information in this document was created from the devices in a specific lab environment.
This means that the ICMP packets that are entering the Serial 0 interface on Router4 are denied, and Router 4 sends an ICMP "administratively prohibited unreachable" message to the source of Assuming network connectivity is not the source of the problem, this is generally an indication that the destination node is not connected to the network, powered off, or is not configured We recommend that you carefully read Use the Debug Command before issuing debug commands. http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-software-releases-121-mainline/12778-ping-traceroute.html The default TTL value for ICMP Echo Requests sent by Ping is 32.
Top Of Page Show: Inherited Protected Print Export (0) Print Export (0) Share IN THIS ARTICLE Is this page helpful? Ping Protocol Components Used This document is not restricted to specific software and hardware versions. Important If the remote system being pinged is across a high-delay link such as a satellite link, responses might take longer to be returned. ping < IP address of remote host > Ping the host name of a remote host to verify that you can resolve a remote host name.
Ping Error Message General Failure
Yes No Feedback Let Us Help Open a Support Case (Requires a Cisco Service Contract) Related Support Community Discussions This Document Applies to These Products 800 Series Routers 1800 Series Integrated http://www.itgeared.com/articles/1094-ping-and-icmp-error-messages/ For troubleshooting purposes, make sure that only one default gateway is configured. Ping Messages Explained Jan 20 17:19:47.843: IP ARP: sent req src 18.104.22.168 0000.0c5d.7a0d, dst 22.214.171.124 0000.0000.0000 Ethernet0. Ping Failure Reasons This can be useful to have a rough idea of the delay on the link.
Increase the wait time using the ping -w switch. weblink Modify the local route table or notify the router administrator. Retrieved 4 June 2010. [text shown if your computer replies to ping requests] "Ping" is among the oldest and most common methods used to locate systems prior to further exploitation. ^ Next, make an appropriate change to the routing tables, or inform the administrator of a remote router of the problem. Ping Response Codes
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/36 ms There is almost no difference. Socialize it today. Basically, ARP is a protocol used to map the Layer 2 address (MAC address) to a Layer 3 address (IP address). navigate here If the local computer's TCP/IP configuration is correct, you can still receive this message from your gateway.
It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source. What Is Ping Yes No Do you like the page design? Jan 20 16:00:29.599: IP: s=126.96.36.199 (local), d=188.8.131.52, len 100, unroutable.
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms The RTT is approximately four milliseconds.
You can also ping a website by typing ping www.microsoft.com to check its availability. To use the PING utility simply open a command prompt from your Start menu or type in cmd from your run command box or your search box. They are also very easy to use. How Does Ping Work A default gateway is configured and the link between the host and the default gateway is operational.
See Common errors for a list of error messages that apply to all commands. By definition, a router is built to route packets. Bad value for option value .... http://exactcomputerrepair.com/ping-error/ping-error-65.html We appreciate your feedback.
Open a Support Case (Requires a Cisco Service Contract.) Related Cisco Support Community Discussions The Cisco Support Community is a forum for you to ask and answer questions, share suggestions, and Success rate is 100 percent (5/5), round-trip min/avg/max = 4/6/8 ms Router1# Jan 20 15:54:47.487: IP: s=184.108.40.206 (local), d=220.127.116.11 (Serial0), len 100, sending Jan 20 15:54:47.491: ICMP type=8, code=0 !--- This Since these datagrams are trying to access an invalid port at the destination host, ICMP Port Unreachable Messages are returned, indicating an unreachable port; this event signals the Traceroute program that Contents 1 History 2 Sample ping test 3 Error indications 4 Message format 4.1 ICMP packet 4.2 Echo request 4.3 Echo reply 4.4 Payload 5 Security considerations 6 See also 7
Windows 2000 TCP/IP TCP/IP Troubleshooting Unable to Reach an IP Address Unable to Reach an IP Address Test Network Connection with Ping and PathPing Test Network Connection with Ping and PathPing