VMware Cloud Community
aleixcendros
Contributor
Contributor

Ping loss

Good morning,

We have a physical production environment with 3 Dell PowerEdge R720 connected to an EMC VNXe 3150 by cab to 1GB ISCSI, the 3 servers run VMware ESXi 5.1.0 build 1312873.

The virtual machines have installed VMware tools Version 9.0.5 build-1283433.

To manage the machines we have a VMware vCenter Server 5.1.0 build 1364037

The problem is that repeatedly pings are lost, the loss is random.

Thank you.

Regards.

Reply
0 Kudos
9 Replies
beckham007fifa

Seems to be nic issue, check with NOC team about any activity from Network end. Also check your Ethernet adapters whether are fine? Also confirm the vnic you are using is compatible with VM OS. Once confirmed, check iscsi configuration and settings.

Also Check esxtop commands to check the packet drops. Check whether they are in limits or not?

Regards, ABFS
Reply
0 Kudos
aleixcendros
Contributor
Contributor

Hello Beckham

-The 3 ESXI not lose any pinging between them

-We tested the pings between Windows and Linux machines and also lost.

-The hardware we have is supported by VMware.

- All NIC work correctly.

-The 3 R720 servers have 2 cards with 4 ports each, 2 ports per card are used for LAN and 1 port per cardare used for ISCSI.

-For redundancy we have 2 HP 2530 switch with JumboFrames enabled on both.

Reply
0 Kudos
akkayyakapisett
Enthusiast
Enthusiast

Hi,

We have experienced the similar issue with Dell610.

I hope you have not used dell customized CD for ESXi 5 installation, So add it to the update manager and remidiate to fix the issue.

Venkat

http://www.peeradmin.com

Reply
0 Kudos
beckham007fifa

Okie, Is this the first time you are experiencing this type of issue in your environment? are they on the same rack? were those servers used as windows/standalone host before making them ESXi? does your Jumbo frames been supported beyond ESXi, i mean across all the hops and from storage side?

can you change the nics for vswitch and give a try, make your scsi nics as mangement nic and try. Check the logs when there is drop.

Update BIOS, try connecting only ESXi box without iscsi to figure out if it is due to iscsi.

try changing the vlans as well if it is a problematic ESXi to understand and confirm the problem is not from Switch end. Check cables as well. Check if the problem is confined to a specified location in the datacenter. Is there any power problems with the host? how about the load on ESXi host, is there any network bandwidth policy set for the vm?

Regards, ABFS
Reply
0 Kudos
aleixcendros
Contributor
Contributor

Hello,

the R720 servers had the ESXI 5 preinstalled when bought at DELL

we run update manager and remediate all the ESXI and virtual machines and still losing ping

Reply
0 Kudos
aleixcendros
Contributor
Contributor

Is this the first time you are experiencing this type of issue in your environment?

-Yes, it's the first time because it's a new environment, we already had another environment with 2 Dell PowerEdge R620 with a MD3000i connected with ISCSI and we have no loss of ping.

are they on the same rack?

-Yes, are they on the same rack

were those servers used as windows/standalone host before making them ESXi?

-This server had the ESXI 5 preinstalled when bought at DELL

does your Jumbo frames been supported beyond ESXi, i mean across all the hops and from storage side?

-yes, the emc vnxe3150, 2 switches HP 2530, the virtual switch, the vmkernel port, all are configured with JumboFrames (MTU 9000)

Reply
0 Kudos
beckham007fifa

Seems like switch issue,which switch you have. Also, how about the firmwares, are they all updated. Did you try to contact Dell?

Confirm the switch model, and get some help from NOC team in disabling eee, and check.

Regards, ABFS
Reply
0 Kudos
beckham007fifa

Check this,

DELL R720 & ESXi 5.0 Network Connectivity Loss on Intel I350 NIC - PowerEdge General HW Foru...

Another claim is that it could be due to broadcom issue,

Try this, https://communities.vmware.com/thread/416676

esxcfg-module -s force_netq=0,0,0,0 tg3 (8 zeros for you since you have 8 nics)

esxcfg-module -g tg3

tg3 enabled = 1 options = 'force_netq=0,0,0,0

Regards, ABFS
Reply
0 Kudos
beckham007fifa

Also, If your system has a DEDICATED nic for iDRAC, use that instead, else try to disable iDRAC on the Broadcom NICs.

Regards, ABFS
Reply
0 Kudos