vmnic buffer tx rx value cannot be changed
vmnic buffer tx rx value cannot be changed once the mtu is set to 9000. i.e RX preset maximum shows as 512 when the mtu is set to 9000. and if i reduce the mtu to 1500 then the rx preset maximum shows...
View ArticlevNics show diferents VLANs
Hi. I was asked to create a new VDS for out DMZ network using different VLANSSo the environment has 4 vNics per host 0 and 1 are used for Production Network (vSwitch) and 2 and 3 were not used, so I...
View ArticleHow to check which adapter is an active?
Hi, All I configured it as below; vmnic1 is an active and vmnic0 is an standby.# esxcli network vswitch standard policy failover get -v vSwitch0 Load Balancing: srcport Network Failure Detection:...
View ArticleHow to test Route base on source MAC Hash
Hi, I don't know how to test whether does it work or not because my ESX always presents with vkernel port MAC address (i have 2 physical cards). How to check which card is used ?
View Articlepromiscuous mode causes 100% packet loss on dvportgroup or packet flooding
hi , I have a classic case where in the vDS has multiple dvportgroups with individual physical nics as uplinks.1/2 case - enabling promiscuous mode on the dvportgroup is causing the flooding of packets...
View ArticleLow virtual network adapter performance [vmxnet3]. ESXi 5.5U3.
Hi, I have some problem with virtual network adapter performance [vmxnet3 - 1.4.2.0] on ESXi 5.5 U3b, guest OS RHEL 7.3. I'm sending data at a rate of 800000 packets per second (TCP stateless, frame...
View ArticleIsolate subneted VMs
Hi, I m trying to find some information on how to isolate guests in a multi customer environment in EXSi, google did not help maybe I am using wrong terminology in search . Or point m e in to some...
View ArticleVirtual Machines on one VLAN looses connectivity after vmotion to one host in...
I have a 8 node cluster . The issue is what i am facing is we have 6 Vms on one particular VLAN 103 and if i migrate any of the Vms in VLAN 103 to this particular host ESXI - 06 , the VM looses...
View ArticlePort binding: dynamic vs. ephemeral
As I study for my VCP6-DCV I'm trying to get a better understanding of dynamic vs. ephemeral port binding for dvPortGroups. After doing some research (see below) I need to conform some things. 1)...
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ESXi networking best practice
Hi everyone, recently i had to add three VM's to our ESXi and I'm trying to build this the best possible way in regard to load balancing.Initial configuration was same as on the screenshot except those...
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non-IP hash mismatch - distributed switch 6.5
Hi, I setup a distributed switch v6.5 when I activate the health check I get a warning for teaming and failover. The distributed port groups are all set to: Route based on physical NIC load. And if I...
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Unable to ping vm on LACP (vSphere 6.0)
I have configured LACP on one of my hosts connected to a Cisco SG300-20 (firmware 1.4.1.3) in L3 mode. Everything on both sides looks good. However, the virtual machine is not able to ping the default...
View Articleclusters sharing VDS
I have esxi & vcenter 5.5 u3, I want to migrate to evc mode and also replace two older hardware hosts. Can I create a second cluster, turn on EVC mode and also use the same VDS? I want to migrate...
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Move from LAG to LBT on a vDS?
Hi,I have a couple of hosts and a vDS with two uplinks each in a LAG using Route based on IP Hash, that's working fine.I've been searching for a best practise way of migrating from LAGs (and Route...
View ArticleVMs assigned a port from a different port group upon reboot
So we have a situation affecting VMs in 1 port group on a distributed vSwitch with 65 port groups defined. Randomly upon reboot the network adapter for some VMs in this port group will end up assigned...
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How to cfg specific adapter for vmkernel services
Hello, Need help configuring specific adapters for vmkernel services.I'm running vcsa 6.5 and the servers are on 6.0. I have three Dell servers. They each have a 4-port nic. I was hoping to have one...
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Ex VCP 5.5 needs help. It has been a long time since I setup a vSphere...
Hi Guys, I am an ex VCP 5.0 and 5.5 but did not renew the certification after renewing once on the delta exam. The last time I setup the entire vSphere infrastructure was back in my ex company in June...
View ArticlevDS does not come back after power outage
I have a cluster that lost power and the vDS does not come back, I'm not sure how to troubleshoot that? Thank you
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what is the purpose of uplinks in Distributed Switch?
what is the purpose of Uplink in distributed switch? as far as i know its used to connect vmnic to distributed switch, is that correct?
View ArticleMultiple NIC NAS with SFP+ Directly Connected + 3 HOSTS + HA + DRS + 6.5...
Good day all, I am trying to max out the performance of the NAS but at the same time I have to be very cautious as I have to deploy ESXI in 3 datacenters and the links between them are just 1Gb. All...
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