Which led us down the path of realizing that there was a mis-configuration on the Distributed Virtual Switches on that cluster. And what are the pros and cons vs cloud based? If no VDR instances are associated with the host, the port does not have to be open. Hopefully this makes senseif you need further clarification, be glad to help out! Managed hosts also send a regular heartbeat over UDP port 902 to the vCenter Server system. The information is primarily for services that are visible in the vSphere Client but the VMware Ports and Protocols Tool includes some other ports as well. But can't ping internal network, joining esxi to active directory domain fails due to incorrect credentials even though credentials are correct, vSphere -- isolated network between hosts, Windows Server 2012 (NFS) as storage for ESXi 5.5 problems, iSCSI design options for 10GbE VMware distributed switches? ESXi hosts communicate with the virtual container hosts (VCHs) through port 2377 via Serial Over LAN. And run the command to remove Microsoft Edge: .\Installer\setup.exe --uninstall --system-level --verbose-logging --force-uninstall. Go to Hosts and clusters, select Host, and go to Configure > Firewall. What they said was that I HAD to have TCP 902 open on the Virtual Center..but instead I needed to have TCP 902 open on the hosts. Is a PhD visitor considered as a visiting scholar? Your daily dose of tech news, in brief. Then select the firewall rule you want to change and click Edit. We recently moved to VM 6.0 (vCenter on 3018524) and I am currently having issues with backing up all of my vm servers. This port must not be blocked by firewalls between the server and the hosts or between hosts. For the deployment of a VCH to succeed, port 2377 must be open for outgoing connections on all ESXi hosts before you run vic-machine create to deploy a VCH. Solution:- While trying to import Virtual Machines from the VCenter Server, the following error is seen 'The application cannot communicate with the ESX Server.'. Then select Next. The Firewall KB article is a bit ambiguous. Which product exactly? The firewall port associated with this service is opened when NSX VIBs are installed and the VDR module is created. Contacting CommVault support and looking in the detailed logs, they show that our VC is Actively Refusing connections over TCP 902: -Reviewed VSBKP and VIXDISKLIB Logs. Bonus Flashback: March 3, 1969: Apollo 9 launched (Read more HERE.) vCenter 6.0 902 TCP/UDP vCenter Server ESXi 5.x The default port that the vCenter Server system uses to send data to managed hosts. You use the --allow and --deny flags to enable and disable a firewall rule named vSPC. We use CommVault (with whom I opened a support ticket) and they identified that the software could not connect on port 902. Do not use space delimitation. To continue this discussion, please ask a new question. Additional information on port requirements for the NetBackup VMware agent are available in the "Netting Out NetBackup" article: Nuts and bolts in NetBackup for VMware: Transport methods and TCP portshttps://vox.veritas.com/t5/Netting-Out-NetBackup-Blog/Nuts-and-bolts-in-NetBackup-for-VMware-Transport-methods-and-TCP/ba-p/789630. they show that our VC is Actively Refusing connections over TCP 902. Contact us for help registering your account. Veeam Backup & Replication v. 10.0.1.4854 running on Windows Server 2016 Can we create custom firewall ports? Why is this sentence from The Great Gatsby grammatical? The Job, when you go look at it in the event details it gives: Unable to open the disk(s) for virtual machine [xxxxxx]. NSX Virtual Distributed Router service. Used for ongoing replication traffic by vSphere Replication and VMware Site Recovery Manager. First off, the CommVault folks sent me on a merry chase down a wrong path. please refer to port requirements section in below system requirements in VMware BOL page. You may also refer to the English Version of this knowledge base article for up-to-date information. The NetBackup backup host always requires connectivity to the VMware vCenter server at port 443 (TCP). We were seeing Failed to open disk error messages for the operation. We were seeing Failed to open disk error messages for the operation. https://vmkfix.blogspot.com/2023/02/test-communication-between-vcenter-and.html, how to test port 902 TCP/UDP communication between esxi host and vcsa. When using VMware Intelligent Policy (VIP), i.e. vCenter Server does not include those virtual machines when computing the current failover . If anyone can provide any pointers, further troubleshooting suggestions or ideas on what may be happening, I'd be grateful if you could share. If you disable the rule, you must configure the firewall via another method to allow outbound connections on port 2377 over TCP. MPIO vs. LACP, esxi6 error 403 when connecting to https://host.tld/, SMB Connection to Server fails with "The Network path was not found", SMB attempts to connect over HTTP. I'm not saying it's not possible, but when it comes to support, I'm not sure VMware still supports it. Virtual machines on a host that is not responding affect the admission control check for vSphere HA. When using nbd as the backup or restore transport type the NetBackup backup host will need connectivity to each ESX/ESXi host at port 902 (TCP). Why not try out the predefined ones before going and creating custom ones? 4sysops members can earn and read without ads! Web Services Management (WS-Management is a DMTF open standard for the management of servers, devices, applications, and Web services. Notify me of followup comments via e-mail. This will tell you where the backup server actually tries to connect, or if such a packet actually arrives at the vCenter. Recovering from a blunder I made while emailing a professor. Required for virtual machine migration with vMotion. I did a curl from the vcsa to the esxi host and it responded, did a packet capture on thie host. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup, ESXi :: Management Console on Private IP over VPN, Network Misconfiguration when adding first host to new vSphere cluster, VPN connection is open. If no VDR instances are associated with the host, the port does not have to be open. For information about deploying the appliance, see. Spice (1) flag Report. -Reviewed VSBKP and VIXDISKLIB Logs. Do not use space delimitation. Server Fault is a question and answer site for system and network administrators. Required fields are marked *. Why is there a voltage on my HDMI and coaxial cables? The vSphere Web Client and the VMware Host Client allow you to open and close firewall ports for each service or to allow traffic from selected IP addresses. Want to write for 4sysops? You'll be using the vSphere Web Client (HTML5) if you have VMware vCenter Server in your environment. Have you tried to connect to your ESXi hosts on port 902 from your backup server? The ones required for normal daily use are open by default, perhaps explain what you are trying to do and why you need to open ports (and which) might help. To test connectivity, from the Veeam proxy servers, I run the following PowerShell cmdlet: On the ESXi servers, I have checked that vSphere Replication and vSphere Replication NFC services are enabled on the VMkernel (192.168.65.2). Run the vic-machine update firewall command. How is an ETF fee calculated in a trade that ends in less than a year? As I just said, vCSA doesn't listen on port 902, so that check is going to fail. We will look at how to open a port in a second. In the VirtualCenter 1.x days, both ports 902 and 905 were used. VMware will not allow any installation on ESXi host itself. There are no restrictions on the ESXi firewall, that I can see. It looks more like the guy arbitrarily tried that cvping utility (see Client Connectivity) against vCenter, when it should be run against hosts. This service was called NSX Distributed Logical Router in earlier versions of the product. I'll give you the URL for the VMware KB called Creating custom firewall rules in VMware ESXi 5.x. Goto Configuration --> Security Profile --> Firewall. When enabled, the vSPC rule allows all outbound TCP traffic from the target host or hosts. Making statements based on opinion; back them up with references or personal experience. What was the mis-configuration on the distrivuted Virtual Switches ? jamerson Expert Posts: 360 Liked: 24 times Joined: Wed May 01, 2013 9:54 pm Full Name: Julien Re: VEEAM PORTS If you install other VIBs on your host, additional services and firewall ports might become available. If so, how close was it? Ensure that outgoing connection IP addresses include at least the brokers in use or future. The following table lists the firewalls for services that are installed by default. The VMware Backup Host will need the ability to connect to TCP port 902 on ESX/ESXi hosts while using NBD/NBDSSL for backup/restores. Note: You don't necessarily need to deploy vCenter Server, but you will need to assign a paid CPU license to the ESXi host to unlock the application programming interface (API). After much troubleshooting, thinking that the firewalls were the issue, but were not as we killed off all firewalls on the affected devices with no change.we noticed that the VC was not listening on port TCP 902.it is listening on UDP 902 though. Try to ping the VCenter both using name and IP Address from the Proxy Server and Management Console. Backups were working intermittently until a few days ago. (Otherwise the hosts will be marked as disconnected). We were seeing Failed to open disk error messages for the operation. The default port that the vCenter Server system uses to send data to managed hosts. If you install other VIBs on your host, additional services and firewall ports might become available. If the port is open, you should see something like curl esx5.domain.com:902 220 VMware Authentication Daemon Version 1.10: SSL Required, ServerDaemonProtocol:SOAP, MKSDisplayProtocol:VNC , VMXARGS supported, NFCSSL supported/t ------------------ . For the deployment of a VCH to succeed, port 2377 must be open for outgoing connections on all ESXi hosts before you run vic-machine create to deploy a VCH. This port must not be blocked by firewalls between the server and the hosts or between hosts. You can install VIBs, but It's something you GENERALLY want to avoid because 1. vCSA doesn't listen on port 902. i am checking connectovity from the esxi host and does not seem to respond on udp 902. To open the appropriate ports on all of the hosts in a vCenter Server cluster, run the following command: To open the appropriate ports on an ESXi host that is not managed by vCenter Server, run the following command: The vic-machine update firewall command in these examples specifies the following information: The thumbprint of the vCenter Server or ESXi host certificate in the --thumbprint option, if they use untrusted, self-signed certificates. I've spent a few hours combing through the internet trying to find a decent solution.but unable to find one. I don't see any Incoming ports TCP for these numbers you mentioned. The port requirement is from VMware. Navigate to the directory that contains the, The address of the vCenter Server instance and datacenter, or the ESXi host, on which to deploy the VCH in the, The user name and password for the vCenter Server instance or ESXi host in the, In the case of a vCenter Server cluster, the name of the cluster in the. To open the appropriate ports on all of the hosts in a vCenter Server cluster, run the following command: To open the appropriate ports on an ESXi host that is not managed by vCenter Server, run the following command: The vic-machine update firewall command in these examples specifies the following information: The thumbprint of the vCenter Server or ESXi host certificate in the --thumbprint option, if they use untrusted, self-signed certificates. Used for ongoing replication traffic by vSphere Replication and VMware Site Recovery Manager. You'll need to be familiar with the vi Linux editor because you'll need to modify and create XML filesso it's not that easy of a task. These ports are mandatory: 22 - SSH (TCP) 53 - DNS (TCP and UDP) 80 - HTTP (TCP/UDP) 902 - vCenter Server / VMware Infrastructure Client - UDP for ESX/ESXi Heartbeat (UDP and TCP) 903 - Remote Access to VM Console (TCP) 443 - Web Access (TCP) 27000, 27010 - License Server (Valid for ESX/ESXi 3.x hosts only) These ports are optional: 123 - NTP (UDP) In the list they mention TCP/UDP in the protocol column, but the purpose description implies it only uses UDP: Product Port Protocol Source Target Purpose, ESXi 5.x 902 TCP/UDP ESXi 5.x vCenter Server (UDP) Status update (heartbeat) connection from ESXi to vCenter Server. Ensure that outgoing connection IP addresses include at least the brokers in use or future. We noticed that while you have a Veritas Account, you aren't yet registered to manage cases and use chat. It is entirely normal and happens all the time. When enabled, the vSPC rule allows outbound TCP traffic from the target host or hosts. (The server commited a protocol violation. Or if you are using a standalone ESXi host only, you'll use ESXi Host Client for the job. I can connect locally and also remotely via vSphere Client. Used for RDT traffic (Unicast peer to peer communication) between. Web Services Management (WS-Management is a DMTF open standard for the management of servers, devices, applications, and Web services.