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AHV management and virbr0 connection

  • 4 March 2021
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In the default AHV network schema, ther’s a connection between the AHV management and the virbr0. Can you explain me the purpose of that connection and the IP adresses used ?

 

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Best answer by Chaitrali Deshpande 4 March 2021, 16:58

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I reply to myself:

IP is 192.168.5.1 and this is the host ‘service’ that connets the CVM ETH1 (192.168.5.2 or 192.168.5.254)

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Hello Balama01,

Thank you for posting your question. The default AHV configuration includes an OVS bridge called br0 and a native Linux bridge called virbr0. The virbr0 Linux bridge carries management and storage communication between the CVM and AHV host

To streamline the management of CVMs and AHV hosts, the SSH shortcut connects a single CVM directly to the local AHV host. From any single CVM, you can use SSH to connect to the AHV host’s local address at IP address 192.168.5.1. Similarly, any AHV host can SSH to the local CVM using the static IP address 192.168.5.254. Because the address 192.168.5.2 on a CVM is used for dynamic high availability purposes in the AHV host, it may not always direct to the local CVM. This SSH connection uses the internal Linux bridge virbr0.

Please refer to these documents for more explanation:

https://nutanixbible.com/

AHV Networking