Virtual MACHINE is unable to ping host and vice versa
It is a very strange problem. VMWare support tried to understand this output as Dell. So, I just throw it to the community to see if anyone else has experienced this problem and may have a solution. I have 3 identical Dell R720 servers. 2 work with no problem, but 1 (let's call it vm8) gave me problems since day 1. Reference verified Dell equipment today and has updated me the BIOS, firmware and drivers on vm8, which did not solve the problem. VMWare technicians checked each parameter network in recent weeks and currently, they are not the cause.
VM8 have ESXi installed 5.5.0. The Server 4 has 2 NICs with 4 ports each. Current configuration is vmnic 0-3 is connected to our LAN, 4-5 on our DMZ and 6-7 in our SAN (iSCSI). The AP will go up and down because VM8 loses connectivity to our isolation address (gateway).
VM8 (Mgmt IP network is 172.20.100.9) has only 1 VM (172.20.100.40). Same subnet (255.255.255.0). .9 happens to ping expiration.40 using vmkping. When I ping.9 de.40, the first package gets a quick response, then all following packets timeout. According to VMWare, when you ping in (VM to host) it does not go out through the card physical network to the physical switch. Everything is internal with vmnic and vSwitch. When I ping my gateway (172.20.100.1), the ping is successful. When I ping.9 from my workstation, the first packet times out, then answered the following packages. It is the exact opposite of ping the virtual computer.
Here's a better ventilation-
.9 VM8 host
.40 VM on the host VM8
.1 gateway
.122 workstation over LAN
.25 vRanger connection (physical server on LAN)
Ping
.9 40 (100% packet loss)
first package de.40 a.9 (75% packet loss) Gets the response, then 3 timeout
.9 a.122 good ping (0 packet loss)
.122 a.9 (0 packet loss) good ping
vmkping (75% loss).9 a.25 does not appear each packet that it is sent. But other results, can I assume first package times out.
first package de.25 a.9 (75% loss) has expired, the following 3 got a response
.40 a.122 good ping (0 packet loss)
. 122. 40 (100% packet loss)
The 3 can ping a.1 (every 20 minutes on VM8 I get a "vSphere HA agent on this host failed isolation address 172.20.100.1"
Also, throughout the day, I get the message - "vSphere HA agent on this host cannot reach some of the management of the addresses of network of other hosts, and HA is perhaps not able to restart the virtual computer if a failure of the host is displayed." I came to work in the morning, and all my VMS on VM8 migrated to my other 2 hosts. My backups don't work on VM on VM8. I use vRanger connection and when I ping connection vRanger VM8 (physical server), the first package expires and the following packages get a response. Then, when connection vRanger goes to back up my VM, runs aground due to loss of original packet.
These are things I've already tried. I tested individually each physical NETWORK adapter. I removed all the ports on the two NIC to try to isolate a specific port. All the 4 vmnic is active adapters in network properties NIC Teaming management and I moved each vmnic individually to unused to test each port. I replaced the Cat6 cables. I used different Dell switches and various ports of the switch. I even swapped the switch ports that host another employee, exclude a switch port configuration problem. In addition, port security is disabled on the ports. I upgraded ESXi 5.5.0 to a newer version. There is a known issue with the tg3 driver, which I've updated to the latest version without problem. I also used tg3 workaround by disabling NetQueue. And we do not use of VLAN. Dell technical support says that it is not a hardware problem and thinks it's a matter of layer 2, but does not know where. Basically, it's an internal problem (meaning strictly on VM8) with vSwitches or vmnic or it's a material gremlin in our Dell R720 box.
The final recommendation of Dell is to blow the ESXi server and install a clean copy. It's extremely frustrating and I'm out of ideas.
Thanks in advance.
Any luck that you have an IP address that is duplicated on your network?
Tags: VMware
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