8 Comments on “Which is the transport protocol and port number used in VMware’s implementation of VXLAN in NSX for vSph”

1. redtantra says:

   November 2, 2014 at 8:27 am

   VMware uses UDP 8472, the VXLAN default port is UDP 4789

   
   
   
   0

   
   
   
   0
2. kees says:

   January 21, 2015 at 4:26 pm

   B.
   In April 2013, IANA reserved UDP port 4789 for VXLAN.

   
   
   
   0

   
   
   
   0
3. spleez says:

   January 23, 2015 at 9:40 pm

   A. They still use UDP 8472 even though the IANA reserved 4789.

   From the NSX vSphere Design Guide v1.2
    
   Up to the current release 6.1, NSX uses 8472 as Destination Port value for the external UDP header. This differs from the IANA assigned number for VXLAN that is 4789, as described at the link below:
    
   http://tools.ietf.org/html/rfc7348#page-19
   It is however possible to modify this value in an NSX deployment via a REST API call. However, before doing so and to avoid data-plane outages it is essential to ensure that all the ESXi hosts are running an NSX-v release (no backward compatibility with hosts running vCNS with vSphere 5.1) and that the configuration in the physical network (access-list, firewall policies, etc.), is properly updated. “

   
   
   
   0

   
   
   
   0
4. cleverjack says:

   October 29, 2015 at 11:55 pm

   A:
   Up to the current release 6.1, NSX uses 8472 as Destination Port value for the external UDP header. This differs
   from the IANA assigned number for VXLAN that is 4789, as described at the link below:

   NSXvSphereDesignGuidev2.1.pdf

   
   
   
   0

   
   
   
   0
5. Max says:

   November 16, 2015 at 6:10 pm

   Officially from VMware: http://pubs.vmware.com/NSX-62/index.jsp#com.vmware.nsx-cross-vcenter-install.doc/GUID-E7C4E61C-1F36-457C-ACC5-EAF955C46E8B.html

   –> VXLAN Termination End Point (VTEP)

   VXLAN Termination End Point (VTEP)

   8472

   UDP

   Transport network encapsulation between VTEPs

   –> So answer is A

   
   
   
   0

   
   
   
   0
6. MonkeyKiller says:

   May 8, 2016 at 4:57 am

   A. https://pubs.vmware.com/NSX-62/topic/com.vmware.ICbase/PDF/nsx_62_admin.pdf Page 17

   
   
   
   0

   
   
   
   0
7. Jebem says:

   January 19, 2017 at 1:49 pm

   “Starting in NSX 6.2.3, the default VXLAN port is 4789, the standard port assigned by IANA. Before NSX 6.2.3, the default VXLAN UDP port number was 8472.”

   https://pubs.vmware.com/NSX-62/index.jsp?topic=%2Fcom.vmware.nsx.upgrade.doc%2FGUID-367BA122-3180-48B6-8AAC-B890B8EF5084.html

   
   
   
   0

   
   
   
   0
8. PA says:

   January 30, 2017 at 10:47 am

   +1 Jebem

   
   
   
   0

   
   
   
   0