Getting Started with Lync Express 2.0

Overview

This document will provide you with a brief overview of Lync Express. It will show you the various types of deployments that can be configured with Lync Express, as well as some theory and best practices.

Lync Express can be setup with the following deployment types:

1U Appliance Description and Port Assignments

Appliance Front

appliance front.png

Description from Left to Right

  • Power LED
  • HDD LED
  • Power Button
  • Hot swappable RAID 1 HDD Enclosure

Appliance Back

Appliance Rear.png

Description from left to right

  • Power button
  • Internal AC Power Supply
  • Appliance Cooling Fans
  • USB Ports
  • A Series Telephony Board
    • PSTN Telephony board for PSTN Gateway Functionality
    • Sangoma A Series Digital Board
    • T1/E1 PRI Connectivity
  • D Series Transcoding Board
    • Used with the Session Border Controller
    • Used to transcode various different types of codecs
  • DVI Display Adapter
  • External Ethernet Adapter
    • Used by the Lync Edge Server, Reverse Proxy Server and the Session Border Controller
    • Port will route to the De-Millitarized Zone (DMZ) of the deployed network
    • Lync Server SHOULD NOT route through this adapter for security reasons
    • Completely Firewalled for protection through Windows Server firwall
  • Internal Ethernet Adapter
    • Used by all components of Lync Express
    • Routes to the internal LAN of the deployed network
  • USB Ports

 


Appliance Login Information

Upon first boot of the appliance, use the credentials below to login:
Username: administrator
Password: sofnisys123!

It is recommended that you change the administrative password after logging in. Also, for security, once the appliance is added to the corporate domain, it is recommended that the local administrative account be disabled.

 


Lync Express 2.0 Roles

The Lync Express appliance comes equipped with the ability to configure the following roles required for Lync Server operation

  • Lync Mediation Server with Front End Pool
  • Lync Edge Server
  • Active Directory Domain Controller
  • Lync Mobility
  • Reverse Proxy Server through IIS ARR (Application Request Routing)
  • Session Border Controller (SBC)
  • VoIP Gateway through Netborder Express Gateway

In some environments, not all roles are required as they may already be deployed. See the examples below:

  • if an organization already has an existing Active Directory infrastructure, the Domain Controller role does not need to be activated. Lync Express can interface with the existing AD infrastructure to configure Lync Server.
  • If an organization currently has Microsoft Exchange running with OWA active, they have most probably deployed a reverse proxy server and the domain controller. They would not need to activate these roles on Lync Express.

 

Networking

There are two physical network adapters located on the Lync Express appliance. Each one of the networking ports has been designated a specific task within the appliance.By default, Windows firewall on the host system is configured to block and protect all traffic on the external interface.

See below for the descriptions and their uses:

rear ports.png

Internal Network Interface

The internal network face is the interface which connects to the Local Area Network. All components of Lync Express use this interface to communicate with the LAN. Each role must be configured to use this interface. It is recommended that each role get assigned either a static IP address or a DHCP (Dynamic Host Configuration Protocol) reservation.

The following roles rely on the internal interface are:

  • Lync Mediation Server
  • Lync Edge Server
  • Active Directory Domain Controller
  • Lync Mobility
  • Reverse Proxy Server
  • Session Border Controller (SBC)
  • VoIP Gateway

External Network Interface

The external network interface is the interface the connects to either a DMZ network or the Wide Area Network (WAN). Some components of Lync Express require communication to the external internet so that remote users may connect to Lync services that are on premise.

The roles that rely on the external interface are:

  • Lync Mobility
  • Reverse Proxy Server
  • Session Border Controller (SBC)
  • Lync Edge Server

NOTE: The host Windows Server 2012 operating system MUST NOT be configured to access the transcoding or external interfaces. This will protect it from any malicious traffic and keep all Lync Server functions internal to the LAN.

Transcoding Network Interface

The transcoding network interface is the interface which connects directly to the hardware based D-Series board. It is required by the Session Border Controller (SBC) in order to transcode various codecs that are used with VoIP calls.

The roles that rely on the transcoding interface are:

  • Session Border Controller

IP Address Assignment

The Lync Express appliance is setup to use static IP addresses in order to ease the task of configuring the network interfaces. Below is the matrix of roles, and what their internal/external interfaces are set to:

  Internal Interface External Interface Transcoding Interface
Lync Express Front End Server
192.168.168.3 not used not used
Lync Express SBC 192.168.168.2 unset unset
Lync Express Reverse Proxy Server DHCP unset not used
Lync Express Edge Server DHCP unset

not used

Lync Express Active Directory Server DHCP not used not used 

Please note that all "not used" interfaces should never be configured as the server role has no use for them. It is best to disable these virtual interfaces from within the host system as they never will be used. Also, the IP addresses assigned have just been assigned for imaging purposes. You are more than welcome to change the assigned IPs to work within your network environment. 


Virtual Machine Information

Virtual Machine Hyper-V Resource Allocation Table

In Lync Express 2.0, certain amount of resources is assigned to each virtual machine. The resource allocation table is listed below:

Virtual Machine 1U Resources  2U Resources
Vega SBC 2 Virtual Processors, 2GB RAM 4 Virtual Processors, 2GB RAM
Lync Edge Server 4 Virtual Processors, Up to 8GB RAM 4 Virtual Processors, Up to 8GB RAM
Lync Reverse Proxy Server 1 Virtual Processor, 1GB RAM 1 Virtual Processor, 1GB RAM
Windows Active Directory Server 2 Virtual Processors, 2GB RAM 2 Virtual Processors, 2GB RAM