> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/initial-installation/1.-instructions-by-platform/prosbc-requirements-matrix.md).

# ProSBC Requirements Matrix

This matrix lists the session capacities TelcoBridges has measured for ProSBC, and the network interface cards each configuration was tested with. Use it to size a deployment: find the session count you need, then check that your platform and NIC combination appears on that row.

### How to read the networking modes

The **Networking** column describes how the virtual machine reaches the physical network interface. The mode has a large effect on achievable session capacity.

* **Emulation** presents a software-emulated NIC to the guest. It is the most portable option and the slowest, because every packet passes through the hypervisor's emulation layer.
* **Para-virtualized** uses a driver that is aware it is running in a virtual machine (for example VMXNET3 or virtio). It avoids most of the emulation overhead and roughly doubles capacity over emulation on the same hardware.
* **Passthrough / SR-IOV** gives the virtual machine direct access to the physical NIC, bypassing the hypervisor's network stack. SR-IOV divides one physical card into several virtual functions so multiple guests can share it. This is the fastest virtualized option.
* **Physical** is a bare-metal install with no hypervisor in the path.

**RSS** is Receive Side Scaling, a NIC feature that spreads incoming packets across multiple CPU cores instead of interrupting a single core. It is required to reach the highest session counts, which is why it appears only on the larger configurations.

{% hint style="info" %}
**"Not tested" means exactly that.** A cell marked Not tested has not been measured by TelcoBridges in this combination. It is not a statement that the configuration is unsupported or that it will not work — only that no verified capacity figure exists for it. Contact [TelcoBridges support](mailto:support@telcobridges.com) if you need a figure for a combination that is not listed.
{% endhint %}

<table><thead><tr><th width="161">Sessions</th><th width="226">Networking</th><th width="160">Tested Server</th><th width="148">Platform</th><th>RSS</th><th width="150">1G i350, i210</th><th width="182">10G X520, X540</th><th>10G X710</th></tr></thead><tbody><tr><td>1000</td><td>emulation</td><td>R610</td><td>Proxmox/KVM</td><td>Not tested</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>1600</td><td>para-virtualized</td><td>R610</td><td>Proxmox/KVM</td><td>Not tested</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>4800</td><td>emulation</td><td>m5.12xlarge</td><td>AWS</td><td>Not tested</td><td>Not tested</td><td>Not tested</td><td>Not tested</td></tr><tr><td>5000</td><td>emulation</td><td>R610</td><td>VmWare</td><td>Not tested</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>5000</td><td>Physical</td><td>Atom</td><td>Baremetal</td><td>Not tested</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>8000</td><td>para-virtualized</td><td>R610</td><td>VmWare</td><td>Not tested</td><td>Not tested</td><td>Yes</td><td>Yes</td></tr><tr><td>13000</td><td>Passthrough/SR-IOV</td><td>R610</td><td>Proxmox/KVM/VmWare</td><td>Not tested</td><td>Not tested</td><td>Yes</td><td>Yes</td></tr><tr><td>25000</td><td>Physical</td><td>R610</td><td>Baremetal</td><td>Not tested</td><td>Not tested</td><td>Yes</td><td>Yes</td></tr><tr><td>26000</td><td>Passthrough/SR-IOV</td><td>R610</td><td>Proxmox/KVM/VmWare</td><td>Yes</td><td>Not tested</td><td>Not tested</td><td>Yes</td></tr><tr><td>42000</td><td>Physical</td><td>R610</td><td>Baremetal</td><td>Yes</td><td>Not tested</td><td>Yes</td><td>Yes</td></tr><tr><td>50000</td><td>Physical</td><td>R330 (MID)</td><td>Baremetal</td><td>Yes</td><td>Not tested</td><td>Yes</td><td>Yes</td></tr><tr><td>60000+</td><td>Physical</td><td>R330 (MID)</td><td>Baremetal</td><td>Yes</td><td>Not tested</td><td>Yes (2 ports)</td><td>Yes (2 ports)</td></tr></tbody></table>

### Related

* [Network Interface Requirements](/initial-installation/1.-instructions-by-platform/network-interface-requirements.md)
* [List of Supported Network Interface Cards](/initial-installation/1.-instructions-by-platform/baremetal-installation/list-of-supported-network-interface-cards.md)
* [SBC Certified Hardware](/initial-installation/1.-instructions-by-platform/baremetal-installation/sbc-certified-hardware.md)

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