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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
Multicast Snooping. In multicast snooping mode, a vSphere Distributed Switch provides IGMP and MLD snooping according to RFC 4541. The switch dispatches multicast traffic more precisely by using IP addresses. This mode supports IGMPv1, IGMPv2, and IGMPv3 for IPv4 multicast group addresses, and MLDv1 and MLDv2 for IPv6 multicast group addresses.
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://blogs.vmware.com/vsphere/2013/05/vxlan-series-multicast-basics-part-2.html
May 03, 2013 · Multicast protocol support in the network allows optimal delivery for one to many communications. Instead of the end nodes sending multiple copies of message…
https://kb.vmware.com/s/article/1006525
1006525, NLB Multicast Mode – Static ARP Resolution Since NLB packets are unconventional, meaning the IP address is Unicast while the MAC address of it is Multicast, switches and routers drop NLB packets. NLB Multicast Packets get dropped by routers and switches, causing the ARP tables of switches to not get populated with cluster IP and MAC address.
https://communities.vmware.com/thread/521179
Sep 30, 2015 · 2) So VM is the Source of multicast traffic and PC which is in Physical world is the receiver. So they need RP configured on one of the router, i was thinking to configure on NSX edge Gateway but then identified it doesnt suppport any Multicast routing.
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, refer to the VMware article Microsoft NLB not working properly ... If appropriate, you can also enable Internet Group Management Protocol (IGMP) support by selecting the IGMP multicast check box. To configure the MAC addressing for NLB (which depends on the NLB mode), the most important ...
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://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://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://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-97724211-5167-428F-A217-871963A7DFF7.html
VMware Docs. MyLibrary. MyLibrary; 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 ...
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://support.microsoft.com/en-us/help/4494444/configuring-network-infrastructure-to-support-the-nlb-operation-mode
Apr 05, 2019 · Configuring network infrastructure to support the NLB operation mode. Content provided by Microsoft. ... 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 ...
https://communities.vmware.com/thread/521179
Sep 30, 2015 · 2) So VM is the Source of multicast traffic and PC which is in Physical world is the receiver. So they need RP configured on one of the router, i was thinking to configure on NSX edge Gateway but then identified it doesnt suppport any Multicast routing.
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://blogs.vmware.com/virtualblocks/2017/04/11/goodbye-multicast/
Apr 11, 2017 · vSAN I’ll start off with a simple statement that will likely make a lot of customers happy. VMware vSAN in 6.6 will no longer use Multicast. All vSAN traffic will instead use Unicast. For a history of why Multicast was used, as well as what changed to prompt the shift read the history of vSAN multicast …
https://docs.vmware.com/en/VMware-NSX-Data-Center-for-vSphere/6.4/com.vmware.nsx.admin.doc/GUID-D0854BD9-C5A9-460A-A650-08732561B853.html
IP multicast routing enables a host (source) to send a single copy of data to a single multicast address. Data is then distributed to a group of recipients by using a special form of IP address called the IP multicast group address. In a multicast environment, any host, regardless of whether it is a member of a group, can send to a group.
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