What port does VMware ESXi use?

ESXi 7.0

What is VMware span?

Port mirroring is also referred to as Switch Port Analyzer (SPAN) on Cisco switches. In VMware vSphere 5, a Distributed Switch provides a similar port mirroring capability that is available on a physical network switch. Following figure shows the traffic flow when the mirror destination is configured as an uplink port.

What is a virtual SPAN port?

To SPAN the Virtual Network. Port mirroring is the network switch ability to send a copy of network data packets being transmitted over a switch port to a network monitoring or inspection device that is itself connected to the port mirror – a dedicated port on the switch.

What is port 902 used for in VMware?

VMware uses designated ports for communication. The default port that the vCenter Server system uses to send data to managed hosts. Managed hosts also send a regular heartbeat over UDP port 902 to the vCenter Server system. This port must not be blocked by firewalls between the server and the hosts or between hosts.

What is promiscuous mode ESXi?

Promiscuous mode is a security policy which can be defined at the virtual switch or portgroup level in vSphere ESX/ESXi. A virtual machine, Service Console or VMkernel network interface in a portgroup which allows use of promiscuous mode can see all network traffic traversing the virtual switch.

What is Rspan Cisco?

Remote SPAN (RSPAN): An extension of SPAN called remote SPAN or RSPAN. RSPAN allows you to monitor traffic from source ports distributed over multiple switches, which means that you can centralize your network capture devices.

What is spanning port?

A SPAN port (sometimes called a mirror port) is a software feature built into a switch or router that creates a copy of selected packets passing through the device and sends them to a designated SPAN port. Using software, the administrator can easily configure or change what data is to be monitored.

Where do I find the span session in vCenter?

In the vCenter web client, from the vCenter Home page, select Networking. Then select the Distributed Switch where you need the SPAN session, and click on the Manage tab. Click on settings, and then “Port mirroring”. This is all somewhat pedantic, but we’re getting there. Now we’re finally getting to the configuration of the SPAN session.

Can a VM monitor a port on another host?

If you need to monitor a port on another ESX host in the same cluster, I’d recommend vMotioning your monitoring VM to the same host to keep the process clean, avoiding network changes. I like the simplicity of this approach, with all traffic forwarded by the hypervisor within the same host.

Can a virtual sniffer be on a SPAN port?

This article is intended to show just how straightforward it is to use the VMware distributed switch SPAN port capability, to put a virtual sniffer on a virtual port on a virtual distributed switch.