UCCE Windows Server NIC Binding and Interface Metrics

Introduction

This document describes updating the NIC Binding Order or Interface Metrics to correct binding the Hostname of the server to the Public IP Address.

Components Used

The information in this document is based on Unified Contact Center Enterprise (UCCE).

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Problem

The Windows Server Hostname binds to Private IP instead of Public IP triggering processes to bind to the wrong IP Address.

Solution

Updating the NIC Binding order and placing the Public NIC above the Private NIC would resolve this as noted in the Installation Guide (pre 12.0):
Cisco Unified Contact Center Enterprise Installation and Upgrade Guide, Release 11.6(1)

On Windows Server 2016+, the NIC Binding Order is not used and is replaced by Interface Metric, the Metric for the Public NIC should be lower than the Private NIC indicating it is higher priority as noted in the 12.0 Installation Guide:

Cisco Unified Contact Center Enterprise Installation and Upgrade Guide, Release 12.0(1)

The Properties dialog box of the network adapter can be used to manually assign the appropriate Interface Metric value.

In the Advanced TCP/IP Settings dialog box, in the IP Settings tab, uncheck the Automatic metric checkbox and type a low value in the Interface metric: text box. In the example provided, a value of 1 is assigned. A low value indicates a higher priority, as shown in the image;