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Can you ping the Host and VMs now ?<br />
<br />
can you repeat the issue ?
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Can you ping the Host and VMs now ?

can you repeat the issue ?

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I can only ping the Esxi itself but won't be able to connect via vsphere, also can not ping all the vm guests running within this Esxi , I must reboot in order to resume everything normal
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I can only ping the Esxi itself but won't be able to connect via vsphere, also can not ping all the vm guests running within this Esxi , I must reboot in order to resume everything normal

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Is this a new installation, or has been working ?
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Is this a new installation, or has been working ?

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Has been working for few years
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Many ideas!<br />
<br />
please upload screenshots of ESXi networking.
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Many ideas!

please upload screenshots of ESXi networking.

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There you go !<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/09_w36/933219/C--Users-piaakit-Desktop-expert-exch.jpg" target="_blank" title="1 (124 KB)"><img alt="1" class="file-block lazyload" style="max-width: 796px;" data-src="https://filedb.experts-exchange.com/incoming/2015/09_w36/933219/C--Users-piaakit-Desktop-expert-exch.jpg" /></a>
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There you go !

1https://filedb.experts-exchange.com/incoming/2015/09_w36/933219/C--Users-piaakit-Desktop-expert-exch.jpg

C--Users-piaakit-Desktop-expert-exch.jpg

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So are ALL your virtual machines and ESXi host on the same 10.0.0.40 network ?
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So are ALL your virtual machines and ESXi host on the same 10.0.0.40 network ?

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problem resolved by vmoition the vcenter vm guest to another esxi, thanks for your reply !
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problem resolved by vmoition the vcenter vm guest to another esxi, thanks for your reply !

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<div class="content wysiwyg-content">
Hi all<br />
<br />
&nbsp; &nbsp; I have a Vcenter version 5.5 and 2 Esxi 5.1 joined, recent I have an issue with one of the Esxi host, this Esxi host and 4 vm guests running, suddenly I couldn't ping any of the vm guest in this Esxi host, but I could ping this Esxi host, but won't be able to connected via vsphere client, in order to have this resolved is to reboot the Esxi host itself, any idea what causes such problem ? <br />
<br />
Keith
</div>
</div>


Hi all

    I have a Vcenter version 5.5 and 2 Esxi 5.1 joined, recent I have an issue with one of the Esxi host, this Esxi host and 4 vm guests running, suddenly I couldn't ping any of the vm guest in this Esxi host, but I could ping this Esxi host, but won't be able to connected via vsphere client, in order to have this resolved is to reboot the Esxi host itself, any idea what causes such problem ? 

Keith

Can not ping the vm guest in Esxi 5.1

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.