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https://communities.vmware.com/thread/107659
Jun 09, 2010 · Unfortunately the NIC that VMware emulates does not support Multicast (some intel nic). I ran into this problem running (Junos - thats juniper OS) on vms for testing porpuses, routing protocols that used multicast traffic will not work. And had to be tweaked to use Unicast which made it all the much difficult.
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-97724211-5167-428F-A217-871963A7DFF7.html
In addition to the default basic mode for filtering multicast traffic, vSphere Distributed Switch 6.0.0 and later releases support multicast snooping that forwards multicast traffic in a more precise way based on the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) messages from virtual machines.
https://docs.vmware.com/en/VMware-NSX-Data-Center-for-vSphere/6.4/com.vmware.nsx.admin.doc/GUID-A16DCF8E-3379-463C-BE34-CB7B816BD189.html
In a multicast network, traffic forwarding requires both the unicast and the multicast routing protocols to converge. PIM Sparse-mode also requires that the Rendezvous Point (RP) for a multicast group is known before any control or data traffic for the multicast group is processed.
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-50AF72D4-F766-4D68-8330-BA15250E4E99.html
Use multicast snooping on a vSphere Distributed Switch to forward traffic in a precise manner according to Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) membership information that virtual machines send to subscribe for multicast traffic.
https://www.borgcube.com/blog/2016/03/12/multicast-support-in-vsphere/
I have fielded a number of questions on VMware’s multicast support and figure it is time I did a short blog on it. There is a good white paper on the topic on the VMware site called Multicast Performance on vSphere 5.0 that deals with performance changes that have been made to enhance multicast support in vSphere 5. The recurring question I get is how multicast is handled in vSphere.
https://blogs.vmware.com/vsphere/2013/05/vxlan-series-multicast-basics-part-2.html
May 03, 2013 · In the last post here, I provided some details on vSphere hosts configured as VTEPs in a VXLAN deployment.Also, I briefly mentioned that Multicast protocol support is required in the physical network for VXLAN to work. Before I discuss how Multicast is utilized in VXLAN deployment, I want to briefly talk about some of basics on Multicast.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.vsan-planning.doc/GUID-03204C22-C069-4A18-AD96-26E1E1155D21.html
vSAN data traffic requires a low-latency, high-bandwidth link. Witness traffic can use a high-latency, low-bandwidth and routable link. To separate data traffic from witness traffic, you can configure a dedicated VMkernel network adapter for vSAN witness traffic.. You can add support for a direct network cross-connection to carry vSAN data traffic in a vSAN stretched cluster.
https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.networking.doc/GUID-9C4D2D07-74EC-46D3-99A5-D7C01B5AE811.html
In addition to the default basic mode for filtering multicast traffic, vSphere Distributed Switch 6.0.0 and later releases support multicast snooping that forwards multicast traffic in a more precise way based on the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) messages from virtual machines.
https://support.microsoft.com/en-us/help/4494444/configuring-network-infrastructure-to-support-the-nlb-operation-mode
Apr 05, 2019 · If you are using VMware to run your virtual environment, ... the NLB traffic is addressed to the NLB multicast MAC address. To support this configuration, you must configure the network infrastructure to use static ARP entries and MAC address table entries. ... The network traffic must be able to reach the correct virtual machine regardless of ...
http://www.vryan.co.uk/index.php/2015/06/03/how-to-enable-vm-multicast-traffic-across-multiple-hosts-on-cisco-ucs/
Recently I was asked to investigate an issue occurring on some VM’s within the environment I look after. The sysadmin informed me that he was unable to receive multicast traffic on VM’s in the same VLAN when they were separated on different hosts in the cluster. However, when the VM’s were on the same host, […]
https://www.chriscolotti.us/vmware/vsphere/interesting-vmware-vswitch-advanced-setting/
Interesting VMware vSwitch Advanced Setting. ... the traffic that goes out the virtual machine to the physical server is from the MAC address something else not the MAC address of the virtual machine given by vSphere. You will notice we also have the vSwitch connected with redundant uplinks in a standard Active/Active setup as most ...
https://kb.vmware.com/s/article/2044735
Multicast Filtering Because of limitations in the original VMware vSwitch forwarding model and the construction of the multicast mechanism, multicast traffic passing through a vSwitch can be received by virtual machines which have not subscribed to the multicast group sending that traffic.
https://www.vmware.com/support.html
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https://www.experts-exchange.com/questions/28376954/Multicasting-vmware-esxi-machines.html
Find answers to Multicasting vmware esxi machines? from the expert community at Experts Exchange. Experts Exchange. Log In. Sign Up. Submit. We help IT Professionals succeed at work. GET ACCESS. SEE HOW IT WORKS ... I gave you that link because it talks about VMware's support for multicast.
https://pubs.vmware.com/horizon-view-60/topic/com.vmware.horizon-view.desktops.doc/GUID-7C1CEE2B-947C-4EDD-9126-21A71E615BAB.html
Customers can now use Adobe Media Server and multicast or unicast to deliver live video events in a virtual desktop infrastructure (VDI) environment. To deliver multicast or unicast live video streams within a VDI environment, the media stream should be sent directly from the media source to the endpoints, bypassing the remote desktops. The Flash URL Redirection feature …
https://www.juniper.net/documentation/en_US/release-independent/nce/topics/concept/metafabric-2.0-vmware-nsx.html
QFX Series. VMware vSphere Architecture, VMware NSX, VMware NSX Manager, VMware NSX Controller, VMware NSX Logical Distributed Router, VMware …
https://www.cisco.com/c/en/us/support/docs/servers-unified-computing/unified-computing-system/117360-configure-product-00.html
Jan 27, 2014 · The Operating System (OS) that is installed on both of the hosts is VMware ESXi 5.1. Each host has VMs with Microsoft Windows 2012 Guest-OSs. The source of the multicast is MCAST VM (IP address 172.16.16.226) on host IP address 172.16.16.222 (UCS Blade 1/5), that sends traffic to multicast IP address 239.14.14.14.
https://www.vmware.com/support/vsphere5/doc/vsp_esxi50_u1_rel_notes.html
The environment does not support VMware Site Recovery Manager. The environment supports only NFS protocol. Do not use other storage protocols such as FCoE over the same physical network. The NFS traffic in this environment does not support IPv6. The NFS traffic in this environment can be routed only over a LAN.
https://social.technet.microsoft.com/Forums/exchange/en-US/763b9dfa-4f52-4445-9512-7a364aab0061/cas-array-wnlb-vmware
Jan 26, 2011 · VMware support NLB in Unicast and Multicast mode. They recommend using Multicast mode to avoid issues with network traffic being broadcast across the LAN/VLAN. You do, with Multicast, sometimes need a static ARP entry in your switches for Mulicast to …
https://community.cisco.com/t5/unified-computing-system/multicast-on-ucs/td-p/1377577
regarding multicast traffic I only found the following statement: ... RedHat support suggests to deal with multicast problems on the switch, but the solution given is relative to catalyst switches, now we are in a Nexus environment. ... We cookie cut VMware virtual environments for guest system engineering purposes. All routing for a given ...
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/unified-computing/white_paper_c11-692008.html
Support for Disjoint Layer 2 Upstream in End-Host Mode . ... • Broadcast and multicast traffic is pinned on per-VLAN basis to an uplink port; it is dropped when received on the other uplink ports . ... and the vNICs need to be assigned to different VMware virtual switches ...
https://social.technet.microsoft.com/Forums/office/en-US/ef47e67e-e145-4c84-830f-12c5f8877501/nlb-in-vmware-troubleshooting
Sep 16, 2015 · Windows Server 2012 R2 NLB for multiple IIS each IIS in separate VM in VMWare vCenter, it is not known, whether both of them are on the same hardware 1 NIC per VM further VMs for database and AD DC are in the same subnet and the IIS access them VMs connected via vSwitch it is just a test ... · Hi Chipper, I know how the address is built. From some ...
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