VMware HCX

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Unable to Site Pair

  • 1.  Unable to Site Pair

    Posted Sep 04, 2024 07:19 AM

    Hi team,

    Getting error while doing hcx site pairing from on-premise to cloud in AVS.



  • 2.  RE: Unable to Site Pair

    Posted Sep 04, 2024 10:20 AM

    any suggestions would be appreciated.

    Tried with different browser.

    When I tried to ping cloud HCX from hcx connector getting packet filtered response 

    From x.x.x.x icmp_seq=3 Packet filtered
    Maybe if I dont set up Under Resolution Address select either the Public IP address or the Private IP, like we do in VMC on AWS?




  • 3.  RE: Unable to Site Pair

    Broadcom Employee
    Posted Sep 04, 2024 10:22 AM

    What is the connectivity between source and destination? Is it over ExpressRoute? Or are you trying to configure it over the public internet?




  • 4.  RE: Unable to Site Pair

    Posted Sep 04, 2024 10:31 AM

    I need to make this setup configure over internet.




  • 5.  RE: Unable to Site Pair

    Broadcom Employee
    Posted Sep 04, 2024 10:33 AM

    Did you follow this article?

    https://learn.microsoft.com/en-us/azure/azure-vmware/enable-hcx-access-over-internet




  • 6.  RE: Unable to Site Pair

    Posted Sep 04, 2024 10:40 AM

    I believe this article will need to follow once I do the HCX site pairing from on premise HCX connector to cloud HCX manager?




  • 7.  RE: Unable to Site Pair

    Broadcom Employee
    Posted Sep 04, 2024 10:56 AM
    Edited by Christopher Dooks Sep 04, 2024 10:56 AM

    Ah apologies, I misread.

    With AVS, you get given a public URL to connect to. Do you know what version of HCX is deployed in AVS?

    https://learn.microsoft.com/en-us/azure/azure-vmware/configure-vmware-hcx




  • 8.  RE: Unable to Site Pair

    Posted Sep 04, 2024 11:13 AM

    Version : 4.8.2.0




  • 9.  RE: Unable to Site Pair

    Broadcom Employee
    Posted Sep 04, 2024 11:15 AM

    How is the connectivity between Connector and AVS Manager? Any kind of inspection/firewall in place which could be impacting the traffic flow? Port 443 allowed?




  • 10.  RE: Unable to Site Pair

    Posted Sep 04, 2024 11:49 AM

    We have Fortigate which is the outbound router , but as long as the traffic is flowing through the SSTP VPN tunnel, that Fortigate should be transparent




  • 11.  RE: Unable to Site Pair

    Broadcom Employee
    Posted Sep 05, 2024 05:24 AM

    That looks to be an underlay reachability issue, where the Connector cannot reach the HCX Cloud Manager.




  • 12.  RE: Unable to Site Pair

    Posted Sep 05, 2024 06:21 AM

    Do you think if it could be due to necessary ports that needs to be open for communication. For HCX, ports 443 (HTTPS) and 4500 (IPsec).




  • 13.  RE: Unable to Site Pair

    Posted Dec 24, 2025 08:25 AM

    Indeed, from the output of the curl command, it seems 443 isn't open.

    Hence irrespective of FQDN or IP Address being used, the site pairing will fail as this is not a DNS issue but a port blocked issue.

    Is this local HCX supposed to use a Proxy Server. In that case, even if you open port 443 on the firewall for a Direct Connection, but HCX will ignore that and will try to send the traffic to the Proxy instead.

    Also, after making any changes performed on HCX, kindly restart app and web service via hcx:9443 URL & then check the issue

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