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You are designing a vSphere environment that will utilize a distributed vSwitch that has two high-speed (10 Gbps) uplinks per ESXi host. It will provide networking for VMs, vMotion, and management. You intend to allow vMotion to maximize the utilization of available (unused) network bandwidth whenever hosts attempt to enter maintenance mode. However, you are concerned that uncontrolled network utilization by vMotion could cause competition with production VM network traffic and management traffic. You want to configure the distributed switch to accommodate your intention and concern. You want to test the configuration on a distributed virtual switch in your current vSphere environment, although it has only a single, 1 Gbps uplink per ESXi host.
- You need to configure network I/O control to ensure that vMotion network traffic is set with the lowest priority of all network traffic types during times of network contention.
- Do not change the priority of other types of network traffic.
- NOTE – Do not worry if the actual vMotion vmkernel port is not connected to the distributed virtual switch. Simply configure Network I/O Control to meet the requirements.
Objective: 2.4 Administer vNetwork Distributed Switch Settings
Guide Reference(s): 2.4 Administer vNetwork Distributed Switch Settings
- Scenario 10-7
- Chapter 2 – Administer vSphere Distributed Switches – Configure and Administer vSphere Network I/O Control
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To accomplish this task, the administrator can perform the following steps:
- Select Inventory > Networking. Select the distributed vSwitch.
- On the Resource Allocation tab, enable Network I/O Control.
- In the System Network Resource Pools section, select the vMotion pool.
- Set the vMotion network pool’s shares to Low.
- Ensure that all other network pools’ shares are Normal or High.