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Webex Cloud-Connected UC for Government overview
In this article
Feedback?Webex Cloud-Connected UC provides a unified global interface to manage your on-premises UC applications and Unified CM cloud services.
Overview
Webex Cloud-Connected UC for Government gives you a single, global dashboard to manage your on-prem UC apps like Cisco Unified Communications Manager and Unity Connection while still benefiting from the cloud. It supports multiple clusters across on-prem and cloud deployments, making management simple and scalable.
The COP file that is installed on a node is referred to as the telemetry Agent. The deployed Unified CM Management plugin (COP file) communicates to the cloud (through configured proxies), downloads the telemetry module and installs it. The telemetry module is then activated and authenticated. It collates the telemetry data from the on-premises devices and sends the data to Cloud-Connected UC Cloud.
The supported features for Webex Cloud-Connected UC for Government are:
- Directory Service
- Microsoft Teams integration.
Network requirements
Prerequisites
Consider the following prerequisites for network configuration:
- Ensure that you're able to log in to Control Hub. For more information, see Get started with Webex for Government.
- Enable support for WebSocket traffic.
- Webex Cloud-Connected UC for Government cloud port 443 must be reachable from the customer environment.
- Configure the UC application clusters with Network Time Protocol (NTP). The NTP server must be synchronized with the international UTC clock.
Traffic types and firewall requirements
Data over HTTPS connections is outbound only and uses URLs for communication.
Webex Cloud-Connected UC for Government supports both Transport Layer Security (TLS) version 1.2 and 1.3.
URLs required to access Webex Cloud-Connected UC for Government service are provided below.
If your organization uses a proxy, ensure that your UC applications can access the following URLs:
- *.gov.ciscospark.com
- *.gov.wbx2.com
Firewall requirements
If a firewall is configured between UC Apps and the Webex Cloud-Connected UC for Government, SSL inspection for that traffic must be disabled.
Data encryption in transit
Webex Cloud-Connected UC for Government agents validate the Webex Cloud-Connected UC for Government connection with a certificate (Amazon Root CA 1 certificate). This validation ensures that the certificates presented when a TLS session is established, it can be validated against the trusted root CA certificates. The trusted root CA certificates are installed on the device operating system.
Both TLS version 1.2 and 1.3 are currently supported.
| Product | Release | TLS 1.2 Release 15 onwards Cipher | TLS 1.3 Release 15 SU2 onwards Cipher |
|---|---|---|---|
| Cisco Unified Communications Manager Cisco Unity Connection | 15SU2 and later |
ECDHE-RSA-AES256-GCM-SHA384 ECDHE-RSA-AES128-GCM-SHA256 ECDHE-RSA-AES256-SHA384 ECDHE-RSA-AES128-SHA256 AES256-GCM-SHA384 AES128-GCM-SHA256 AES256-SHA256 AES128-SHA256 |
TLS_AES_256_GCM_SHA384 TLS_AES_128_GCM_SHA256 |
System requirements
Use the information below to know about the supported products, and supported UC applications recommended configurations like resource requirements and Mandatory CUCM settings for Webex Cloud-Connected UC for Government.
The supported products are
-
Cisco Unified Communications Manager
-
Cisco Unity Connection.
The supported UC applications release is Unified CM 15SU2 and later.
To know the endpoints that are supported by Webex Cloud-Connected UC for Government, see Cisco Endpoints Supported on Unified CM releases.
Webex Cloud-Connected UC for Government supports only Full administrator, Read-only administrator and Support administrator. For more information on roles, see Assign organization account roles in Control Hub.
Resource requirements
The space requirement for telemetry module is 3 MB for executable.
For log files, 10 MB in the folder path.
CPU and Memory (RAM) Usage: The Webex Cloud-Connected UC for Government service runs with low priority. This helps in restricting the service to minimize CPU usage. The service runs with approximately 345 MB of RAM.
The Webex Cloud-Connected UC for Government service consumes about 155 MB of disk space when installed on Voice Operating System (VOS) based products such as, Unified CM and and Unity Connection.
Buffer size calculation:
The modules also require disk based buffering , with the sizes ranging between 50–200 MB based on the product and the size of the server deployment.
The following table gives examples of the buffer size calculation for various types of publisher nodes.
Default buffer size taken for calculation is 100 MB for Unified CM publisher node and 80 MB for Cisco Unity Connection (CUC) publisher nodes.
For all the subscriber nodes, default buffer size is 50 MB.
| Enterprise Node | Deployment Size | VCPU Count | Memory (GB) | Disk Size (GB) | Buffer Size (MB) |
|---|---|---|---|---|---|
| Unified CM publisher | Small (1K users) | 2 | 8 | 1x110 | 90 |
| Medium (2.5K users) | 2 | 8 | 2x80 | 145 | |
| Large (10K users) | 4 | 8 | 2x80 | 165 | |
| CUC Publisher | 1K users | 2 | 4 | 160 | 80 |
| 5K users | 2 | 6 | 200 | 80 | |
| 10K users | 4 | 6 | **(not specified) | 80 | |
| 20K users | 7 | ***(not specified) | ***(not specified) | 120 |
Mandatory Unified CM settings
Configure the Unified CM clusters with Network Time Protocol (NTP). The NTP server should be synchronized with the international UTC clock. The Unified CM server time is used in the telemetry data sent to cloud and used for processing. Mismatch in the timings between the NTP server and the international UTC clock can cause the data to be discarded.
To find the recommended settings, refer to managing NTP servers section in Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs.
Next steps
Set up your organization to use Webex Cloud-Connected UC for Government: Set up Webex Cloud-Connected UC for Government.
