Troubleshooting virtual machine TCP/IP issues by pinging the loopback address
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Troubleshooting virtual machine TCP/IP issues by pinging the loopback address

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Article ID: 304461

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Updated On:

Products

VMware vSphere ESXi

Issue/Introduction

Symptoms:
This article provides steps to troubleshoot network connection issues by pinging the loopback address (127.0.0.1).


Environment

VMware ESXi 4.1.x Installable
VMware ESXi 3.5.x Embedded
VMware ESXi 4.0.x Embedded
VMware ESX 4.0.x
VMware ESXi 3.5.x Installable
VMware ESXi 4.1.x Embedded
VMware ESX Server 3.5.x
VMware ESX 4.1.x
VMware ESXi 4.0.x Installable
VMware ESX Server 3.0.x

Resolution

To use ping to verify that TCP/IP is working correctly, run the command:
ping 127.0.0.1
The output for a working connection appears similar to:
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
If the you receive an error, TCP/IP is not working correctly.
To resolve this issue, try the following options:


Additional Information

For more information, see the main article in this series, Troubleshooting virtual machine TCP/IP connection issues (1007842).