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PAETECDisaster Recovery &

Network DiversitySolutions

Network Diversity and Your Disaster Recovery PlanNetwork Diversity and Your Disaster Recovery Plan

Agenda:

Critical BC/DR elements

Assessing your business risk

PAETEC’s products and services that can assist you in achieving

your redundancy goals

Developing a strong Business Continuity/Disaster Recovery (BC/DR) program is critical to protecting the underlying investments in your business.

Critical BC/DRCritical BC/DR Program ElementsProgram Elements

Corporate CharterEstablished in order to develop the mission and goals of the BC/DR program

Executive-Level Champions

Identify individuals within the organization who promote,

support, and lead the BC/DR team

Resources

Align resources to ensure the plan can be implemented if

needed

Level of Exposure

Determine the appropriate level of exposure your organization

can tolerate

Assess Your Business’ Risk of ExposureAssess Your Business’ Risk of Exposure

Risk considerations should include:

Natural or man-made Accidental or deliberate Internal or external

Document a preliminary assessment of the current controls in place to mitigate these risks, providing the baseline for the creation of your organization’s BC/DR plan.

Once the BC/DR program development has been established, the next step is to evaluate the current risk exposure for your business.

Factors to consider include: Financial impact due to disruption of operations Loss of assets, such as key personnel or technology

infrastructure Violation of laws or regulations Effect on public perception

Business Impact AnalysisBusiness Impact Analysis

The next step is to perform a comprehensive Business Impact Analysis (BIA). The results of the BIA will identify business vulnerabilities which will help you develop strategies to minimize risks.

Rank business vulnerabilities by level of importance.

Map all identified threats to your critical business functions.

Creating your Recovery ProcessCreating your Recovery Process

The following high level process should be followed when creating your BC / DR plan:

• Identify vulnerabilities for each business unit• Develop recovery options for each vulnerability• Document recovery procedures• Train key personnel• Test recovery procedures• Routinely review and update procedures

Now that you have accessed your companies primary vulnerabilities the time has come to document a recovery plan in the event the situation occurs.

Network Diversity/Redundancy OptionsNetwork Diversity/Redundancy Options

The typical network architecture has four key components that need to be considered when developing your diversity options:

Customer Premises Equipment (PBXs or Routers) Loop Facilities (Copper, Fiber) Points of Presence (POP) Central Office Facilities (Lucent 5ESS)

Based on your results, you will need to implement network diversity options, which are available to you through communication service providers such as PAETEC.

Understanding the available options will enable you to determine the appropriate level of investment to make in mitigating these risks.

PAETEC’s Network Diversity / Redundancy OptionsPAETEC’s Network Diversity / Redundancy Options

PAETEC’s portfolio of network diversity options can be used to mitigate threats to the key components in your network architecture. These options provide inherent (core) diversity, as well as customized (edge) diversity solutions:

Inherent Central Office Redundancy

Access Diversity Solutions

Call Rerouting Solutions

MPLS and Internet Redundancy Solutions

Email Scanning as a Backup Email Solution

Access Diversity SolutionsAccess Diversity SolutionsCarrier Line Diversity

Underlying Carrier Diversity

Access Provider Diversity

POP Diversity

TruConnect Diversity

Inherent Central Office Redundancy Inherent Central Office Redundancy Switch Module Diversity

Back-up Power and Routine Diagnostics

Inherent Diversity - Switch Module

Switch Module Diversity provides protection from hardware failures within a PAETEC switch. Each PAETEC 5ESS switch is engineered with redundant switch module cards.

Each SM has a Side 0 and Side 1 that work in tandem; the active side controls call processing and the other mimics the active side

SwitchingModules

1

2

Customer Premises

PBXPOP POP Lucent

5ESS

In the event one of the modules fail, the passive side will automatically take over control of the switch without affecting service

Inherent Diversity - Central Office FacilitiesInherent Diversity - Central Office FacilitiesPowerPowerCommercial power backed up by diesel powered generatorDC Plant has N+1 redundancy (For DC power rectification)Battery plant is engineered for a Minimum of 4 hr backupGenerator is tested bi weekly and can run for 12 - 24 hrs on one tank of fuel.

Routine Diagnostic ExerciseRoutine Diagnostic ExerciseEach week every redundant piece of equipment is tested and switched to the redundant side to verify that the hardware is working properly.

Battery Plant CentralOffice

Commercial Power

Generator

Rectifier

Transfer Switch

By provisioning a percentage of POTs lines outside your PBX, you can protect yourself in the event of a failure in that system.

Since POTS is line-powered, your location will still have connectivity to the outside world in the event of a power outage.

Call Re-routing Solutions – Carrier Line Diversity

PBX

POP

POP

Lucent 5ESS

ILECCentral Office

Customer Premises

POP

POTS Service

When used in tandem with DTO, your inbound calls will complete to the back-up lines without losing connectivity.

Access Diversity Solutions – Underlying Carrier Diversity

PAETEC designed our network with the ability to change underlying Long Distance (LD) carriers within minutes.

PAETEC has multiple LD carriers to route traffic over in the event of an outage

Customer Premises

PBXPOP POP Lucent

5ESS

LD Carrier 1

LD Carrier 2

LD Carrier 3

If connectivity is lost to one of our underlying carriers, PAETEC can quickly change routing to a secondary carrier

Access Diversity Solutions – Access Provider Diversity

PAETEC designed our fully redundant data backbone to peer with multiple Tier 1 upstream Internet providers.

In the event there is an outage with one of the carriers, PAETEC can quickly change routing and send your traffic over one of our other providers

Customer Premises

PBXPOP POP Lucent

5ESS

Peering Partner 1

Peering Partner 2

Peering Partner 3

Routing changes can be completed in minutes, significantly reducing down-time

PAETEC can provision: Diverse loops Diverse paths Diverse demarcation points

Access Diversity Solutions – Local POP Diversity

PBX

POP

POP

Lucent 5ESS

POP

POP

Customer Premises

POP Diversity is a mitigation strategy aimed at protecting your business from any disruptions in the connectivity between your location and your service provider’s central office.

Local Point of Presence (POP) Diversity Central Office Diversity Remote Call Forwarding for your voice services

Access Diversity Solutions – TruConnect Diversity

TruConnect is a diversity product that provides total voice redundancy and encompasses:

Access Diversity Solutions – TruConnect Diversity With TruConnect, PAETEC will provision your voice services through multiple central office switching centers.

Diverse paths to multiple 5ESS switches

Both switches work in tandem to share the load for inbound and outbound calls to your customer premises

In the event of a service affecting issue, PAETEC can overflow your call to the second switching center, significantly reducing overall down-time

This option is currently available in our NYC, Albany and LA metro markets

PBX

POP

POP

NY 1 5ESS

POP

POP

Customer Premises

NY 25ESS

PAETEC’sPAETEC’sCall Re-routing SolutionsCall Re-routing Solutions

Direct Trunk Overflow

DTO Remote Access

800# Call Forwarding

800# Diversity

DTO is a mitigation strategy aimed at protecting your business from a disruption at the POP or at your business location.

Call Re-routing Solutions – Direct Trunk Overflow (DTO)

DTO will re-route all incoming calls to a second TG at a location, a remote call center, or even a cell phone

DTO can be configured to automatically re-route calls in the event of a failure or manually by contacting our Network Operations Center (NOC)

PBXPOP

Lucent 5ESS

Customer Premises

Back-up Call Center

DTO will re-route in the event of a remote service interruption, a large influx of calls, or as part of your BC/DR program

DTO Remote Access takes DTO to the next level. With the service customers have the ability to change their DTO forwarding number without contacting the NOC.

Call Re-routing Solutions – DTO Remote Access

DTO will re-route all incoming calls to a second TG at a location, a remote call center, or any number of your choosing

PBXPOP

Lucent 5ESS

Customer Premise

Back-up Call Center

If the DTO route needs to be changed customers can dial a predetermined 800#, enter their pin and change their Call Forwarding Number

Second Location UnavailableCall Goes to Voicemail

Call Re-routing Solutions – 8XX Call Forwarding

Forward sequentially up to 3 alternate RTNs Custom predetermined decision graphs can be created for

disaster recovery. Service is available for both Switched and Dedicated Toll-Free

customers

Call is Routed to Secondary Location

Main Reception Line Is Out of

Service

Customer places a call to Main 800#

Toll-Free customers have the ability to subscribe to 8XX Call Forwarding, a service used to overflow calls to a secondary route choice when a busy, no answer, or out-of-service state is encountered at a facility.

Call Re-routing Solutions – 800# Redundancy PAETEC will also be able to provide 800# redundancy in markets with multiple central offices.

PBX

POP

POP

Rochester 5ESS

POP

POP

Customer Premises

Albany5ESS

PAETEC can provision part of a customers circuit with DID numbers for the 800 service

800#’s will be provisioned in 2 diverse switches.

If the one switch is unavailable PAETEC can updateSMS national to send the 800 traffic thruthe secondary switch.

Inbound 800 Calls

MPLS and Internet Redundancy SolutionsMPLS and Internet Redundancy Solutions

MPLS with redundant application serversMPLS for redundant Internet access

Redundant Data Connectivity using BGP

E-mail ScanningE-mail ScanningEmail Scanning as a Backup Email Solution

Customer ExampleMPLS customer with 3 remote sitesData Center at Corporate SiteRemote sites connected via PAETEC’s redundant MPLS Network

SECURETEC Private-IP MPLSMPLS is PAETEC’s next-generation VPN solution used to connect two or more customer locations in a shared secure environment as opposed to using point-to-point connections.

MPLS Routing Domain

Aggregate Router

Router IP Phone

ET

HE

RN

ET

CorporateSite Site 3

Site 2

Data Center

Firewall

Internet

ET

HE

RN

ET

With MPLS, each site is virtually connected to every other site providing a fully meshed data network.

Single point of failure is the loss of the corporate site since it houses the only data center.

SECURETEC Private-IP MPLS - DR SolutionRedundant Application Servers

Since MPLS provides a fully meshed data network, any remote site can be used as a redundant data center instead of a spoke and hub architecture.

MPLS Routing Domain

Aggregate Router

Router IP Phone

ET

HE

RN

ET

CorporateSite

Back-up DR Site

Site 2

Data Center

Firewall

InternetBack-up App

Server

ET

HE

RN

ET

Mission-critical applications continue to function due to MPLS and the Redundant App Server.

If the Corporate Site is lost, all other locations traffic automatically re-routes to the back-up site.

Add a redundant application server at Site 3 to mitigate the single point-of-failure.

SECURETEC Private-IP MPLS - DR SolutionDiverse Internet Routes

MPLS Routing Domain

Aggregate Router

Router IP Phone

ET

HE

RN

ET

CorporateSite

Back-up DR Site

Site 2

Data Center

Firewall

InternetBack-up App

ServerFirewall

Aggregate Router

Router

Many companies will backhaul all Internet traffic to the Corporate Site over MPLS to save costs. This strategy creates a single point-of-

failure if the Corporate Site loses connectivity

By adding an additional Internet circuit, you benefit from 2 diverse routes to the Internet protecting you in the event your corporate site is out of service

ET

HE

RN

ET

SECURETEC Private-IP MPLS – with Network Firewall

MPLS Routing Domain

Router IP Phone

ET

HE

RN

ET

CorporateSite

Back-up DR Site

Site 2

Data Center InternetBack-up App

Server

Network Firewall

By utilizing PAETEC’s new network firewall product with MPLS you can add additional Internet diversity to your network architecture.

Redundant Network Firewalls in diverse geographic locations

All sites talk directly to the Internet (No need to backhaul traffic)

No CPE Firewall requiredE

TH

ER

NE

T

Network Firewall

Access Diversity Solutions – Redundant Data Connectivity Using BGP

By using BGP 4, PAETEC can provision diverse redundant connectivity for your Data Services. BGP constantly checks for the best route for your data traffic.

By provisioning multiple data circuits sent to two aggregate routers companies can provision geographically diverse data paths.

In the event your first connection is unavailable traffic will be re-routed via the secondary path.

Data Network

Aggregate Router

2

Router

ET

HE

RN

ET

CorporateSite

Data Center Firewall

Aggregate Router

1

ET

HE

RN

ET Terminating

Location

Data Network

E-mail Scanning is PAETEC’s fully managed, Internet-level, e-mail security product that provides your company with premier virus and spam protection, as well as remote back-up e-mail storage.

E-mail Scanning Service – DR Solution E-mail Scanning Service – DR Solution

Built-in protection and recovery (mail storage for up to 14 days in the event of failure)

Automatic e-mail spooling if client experiences e-mail outage

Mail loop identification Load distribution of e-mails between

servers

E-mail Scanning Server Farm

E-mail Sender E-mail ReceiverE-mail Server (Receiver)

E-mail Server(Sender)

Internet

Sample Customer ArchitectureSample Customer Architecture

• Customer has 1 T1 of Voice at each satellite location and 2 T’s to corporate

• Customer uses an 800# to receive calls from their customers 800# is pointed to Corporate

• All sites are connected to corporate via Point-To-Point service

• Data Center located at HQ

PSTN

Router

Site 4

Site 2

Internet

Site 3

Corporate Site PBX

Sample Customer ArchitectureSample Customer Architecture

Primary Method of Interfacing with customers is via 800 or Web.

4 Locations (1 Corporate 3 Satellite)

New Brunswick, NJ (HQ)

Worchester, MA

Elizabeth, NJ

Syracuse, NY

Voice Service OverviewVoice Service OverviewCurrent ArchitectureCurrent Architecture2 T1’s at Corporate1 T1 at all remote sites

Proposed SuggestionsProposed SuggestionsPOP DiversityPOP Diversity

Have Each T1 at corporate sent to different POPS

Switch Module DiversitySwitch Module Diversity

Terminate Each T1 at a diverse Switch Module

Carrier Line DiversityCarrier Line Diversity

Add POTS service that is not provisioned thru the PBX at all remote sites. Lines should be set up to hunt.Direct Trunk OverflowDirect Trunk Overflow

Add Direct Trunk Overflow to each siteInterrelate the 2 diverse T1’s at corporate to auto fail overInterrelate the remote sites to auto failover to POT’s service

PSTN

Site 4

Site 2

Site 3

Corporate Site

PBX

POP

DTO

Current ArchitectureCurrent Architecture1 T1 Point-to-Point at each location to corporateData Center is at Corporate

Site 4

Site 2

Site 3

Corporate Site

Router

MPLS Routing Domain

Proposed ChangesProposed ChangesReplace Point-to-Point service with MPLS

InternetProvision a backup application server at one of the customers remote sites

Add a secondary route to the Internet from backup site

Data Service OverviewData Service Overview

Current ArchitectureCurrent Architecture8XX services are currently designed to terminate at the customers Corporate location.

Proposed SuggestionsProposed Suggestions

8XX Call Forwarding8XX Call Forwarding

Add 8XX call forwarding and createcustom Decision Graphs for various Disaster Scenarios.

1. Create a decision graph that auto forwards calls to second number at corporate in the event one of the T1’s go OOS. (Should always be active)

2. Create a separate decision graph that will sequentially forward inbound 800 calls to site 2 then site 3 then site 4.

PSTN

Site 4

Site 2

Site 3

Corporate Site PBX

8XX Service Overview8XX Service Overview

Thank You For Your Attention!Thank You For Your Attention!

Questions, Comments?Questions, Comments?Please contactPlease contact

Mark Lawrence PeayMark Lawrence Peay310.621.8226310.621.8226

Mark.Peay@PAETEC.comMark.Peay@PAETEC.com