0 Replies Latest reply on Sep 15, 2020 12:10 PM by KiranParmar

    VmWare WorkStation 15 Pro: UDP Multicast is not working between two virtual machine guest operating systems.

    KiranParmar Lurker

      Hi All,

       

      We have VMWare Workstation 15 pro installed in the multiple servers with different guest OS. We are facing a problem with UDP Multicast  broadcast messages between two virtual machines running on the same host or different host server. Note: The Ping and TCP connections are working properly between two virtual machines.

       

      We read multiple articles on different VMWare community posts, about people facing multicast problems on VMWare Workstation and some other websites, but till now we did not find any solution here by requesting VMWare community members to help us on the above issue or provide some pointers to look further.

       

      Details about Servers:

      Host Server Details: Dell PowerEdge R740

      NIC Card: Broadcom NetXtreme E-Series Advanced Dual-port 10G

      Switch: DELL Nexus S4810

      Host server : OS : Windows 2012 R2

      Guest VMs : OS: Red hat Enterprise Linux 7.6

       

      Here by I am attaching the network settings of host server, Host server network adapter, VMWare host server Bridge connection setting, Virtual machine network adapter setting and Virtual machine network settings.

       

      Host server Network adaptor Settings.jpg

       

       

      Host Server Network connection details

      Host server Network Connection Details.jpg

      From host server: Virtual machine network editor settings.

      Virtual Network Editor.jpg

       

      Virtual machine network adapter settings: ( Bridge Connections)

      Virtual Machine Network Adaptor Setting.jpg

       

      Virtual Machine Guest OS Network Adapter Setting:

       

      Virtual Machine Guest OS Network Adaptor Setting.jpg

       

      Route and Ifconfig Command details on Redhat VM:

      $ route

      Kernel IP routing table

      Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

      default         fritz.box       0.0.0.0         UG    100    0        0 ens33

      default         localhost       0.0.0.0         UG    101    0        0 ens38

      192.168.80.0    0.0.0.0         255.255.255.0   U     101    0        0 ens38

      192.168.88.0    0.0.0.0         255.255.255.0   U     100    0        0 ens33

      192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

       

       

      $ ifconfig

      ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

              inet 192.168.88.161  netmask 255.255.255.0  broadcast 192.168.88.255

              inet6 fe80::cd9e:d580:a929:5f9  prefixlen 64  scopeid 0x20<link>

              inet6 fe80::356d:43fb:592c:a411  prefixlen 64  scopeid 0x20<link>

              inet6 fe80::70ec:765b:c9e9:2176  prefixlen 64  scopeid 0x20<link>

              ether 00:0c:29:9b:f4:3a  txqueuelen 1000  (Ethernet)

              RX packets 352129015  bytes 382415567224 (356.1 GiB)

              RX errors 0  dropped 647030  overruns 0  frame 0

              TX packets 149900  bytes 18229904 (17.3 MiB)

              TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

       

      ens38: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

              inet 192.168.80.161  netmask 255.255.255.0  broadcast 192.168.80.255

              inet6 fe80::b567:4b8e:cdbf:b6a6  prefixlen 64  scopeid 0x20<link>

              ether 00:0c:29:9b:f4:44  txqueuelen 1000  (Ethernet)

              RX packets 10559844  bytes 12144934804 (11.3 GiB)

              RX errors 0  dropped 0  overruns 0  frame 0

              TX packets 2255  bytes 2484843 (2.3 MiB)

              TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

      virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

              inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255

              ether 52:54:00:4f:2d:fe  txqueuelen 1000  (Ethernet)

              RX packets 0  bytes 0 (0.0 B)

              RX errors 0  dropped 0  overruns 0  frame 0

              TX packets 0  bytes 0 (0.0 B)

              TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

       

      Kindly provide us some pointer to solve multicast issue or may be hint about, is VMWare workstation 15 pro support UDP multicast or not.

       

      Regards,

      Kiran Parmar