Dedicated Internet Product Overview - XO Communications€¦ · · 2016-09-04Dedicated Internet...

Dedicated Internet Product Overview

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© Copyright 5/15/2012. XO Communications, LLC. All rights reserved. XO, the XO design logo, and all related marks are trademarks of XO Communications, LLC. All other trademarks are property of their respective owners.

Table of Contents

Dedicated Internet Product Overview ............................................................................. 0 Dedicated Internet Access .............................................................................................. 2 Internet Connectivity ....................................................................................................... 2 Features ......................................................................................................................... 3 Benefits .......................................................................................................................... 4 Potential Uses of DIA...................................................................................................... 4 Product Offerings ............................................................................................................ 5 Routers ........................................................................................................................... 8 Customer Owned Premises Routers ............................................................................... 8 XO Provided CPE Routers ............................................................................................. 8 Do you need BGP? ....................................................................................................... 10

What Is BGP and Do I Need It?.................................................................10

Utilizing BGP ............................................................................................................... .11 XO Announcement Options……………………………………………….….11

Customer Announcement Restrictions…………………………….………..11

NAT – Network Address Translation ............................................................................. 15 Network Overview and Map .......................................................................................... 16 Peering Infrastructure ................................................................................................... 17 DIA Points of Presence (POPs) in Markets ................................................................... 17 Usage Based DIA ......................................................................................................... 18 Overview ...................................................................................................................... 19 Downloading Data and CSV Files ................................................................................. 20 Diagnostic Tools ........................................................................................................... 22 Traceroute .................................................................................................................... 22 Ping .............................................................................................................................. 23 BGP Routes ................................................................................................................. 24 Help .............................................................................................................................. 24 XO DIA Service Level Agreements ............................................................................... 25 Network Availability Guarantee - 100% ......................................................................... 25 Latency Guarantee (55 Milliseconds Round Trip) ......................................................... 25 Packet Loss .................................................................................................................. 26 Jitter Measurement ....................................................................................................... 26 Credit Limits and Reporting Procedures ....................................................................... 26

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Dedicated Internet Access XO offers fully managed end-to-end Dedicated Internet Access (DIA) service to meet your demands for Internet connectivity. Depending on the access speed you require, XO provides the flexibility from 1544 kbps up to 1,000 Mbps and greater. Our dedicated service provides Internet backbone connectivity and local loop transport, along with pre-configured XO-provided customer premises equipment, and full installation support and maintenance. When the Internet is fundamental to your business, you need more than high-speed Internet access. You need a reliable partner who can provide what you need today and tomorrow. XO understands your business-critical needs for top-performance, always-on, end-to-end network management. Designed specifically to meet your requirements and grow with your business, the XO advanced private network delivers the utmost in performance and robust Internet access that’s backed by world-class customer support.

Internet Connectivity A Fast, Reliable Connection to the Internet As one of only a few fully peered facilities-based, Tier 1 Internet backbone providers in the United States, XO has hundreds of private peering arrangements in most major metropolitan areas at speeds of up to 10 Gigabits per second. By routing around congested public peering points, these private peering relationships with virtually all major Internet providers give you reliable connectivity and the best possible speed and throughput. That’s how XO delivers your data to its destination securely, reliably, and along the fastest route possible. And, with self-healing SONET metro fiber rings and meshed SuperPOP network architecture, XO provides redundancy and high availability to all its customers. The XO High Capacity multiple 10 Gigabit IP backbone employs an advanced design providing high availability and throughput using technologies such as SONET and network MPLS. Each market attaches into the 10 Gigabit core with uplinks at speeds of up to 10 Gigabits. This ensures that your traffic is carried on a high performance, low-latency network with minimum delays across the backbone. XO maintains the highest level of interconnection to other Internet Service Providers (ISPs), as well as to multiple network exchange points, so that your Internet traffic is delivered reliably and

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efficiently. XO utilizes high-throughput, private peering connections to transfer your data from the XO network to the network of other ISPs. Private peering provides direct connectivity to other ISPs and avoids any problems you may have seen with ISPs who only have connectivity at public peering exchanges or NAPs. There are multiple paths for your data to traverse within the XO network. This redundancy ensures that your data can reliably reach its destination. There is automatic re-routing of IP traffic in the event of a major outage. Also, XO state-of-the-art Operations Desk Representatives perform proactive 24x7 network monitoring and technical support. Point-to-Point Point-to-point means that the Internet access product delivered to XO customers under the Dedicated Internet Access service is a dedicated or non-shared, high-speed product. This means that the entire telecommunications circuit that connects the customer's premises to the XO network is fully dedicated to the customer. It is not shared with any other customer.

Features With DIA solutions, you can: • Control costs by choosing exactly what you need from a wide variety of access speeds and billing options; • Optimize your resources by monitoring your bandwidth capacity with Web-based monitoring and reporting tools; • Maximize company performance with reliable communications via high-speed access to the Internet, your corporate intranet, and extranet resources; • Scale your bandwidth as your business grows; and • Increase productivity with a connection that can quickly transfer large data and multimedia files between networks.

DIA product features:

"Always on" Internet access

Access speeds from 1544 Kbps to 1,000 Mbps and greater

Full installation, maintenance and support, including XO-furnished, pre-configured CPE for your Internet Access service

IP address allocations

Primary and secondary DNS registration or, Secondary only DNS

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Fully managed Web and E-mail hosting options

24 x 7 network monitoring and customer support

Internet backbone connectivity

Local loop transport

Service level guarantees

Term discounts

Competitive pricing and flexible billing options

Comprehensive DIA Features XO has the high-speed DIA solution to meet your growing needs. Managed router services and expanded CPE options are available with all DIA solutions for an additional fee.

Benefits DIA: • Provides dedicated, clear-channel, point-to-point connections and industry-leading public and private peering arrangements; • Offers expanded CPE options and XO maintained router services; • Features optional Border Gateway Protocol (BGP4) for dynamic routing of information between different administrative routing domains without passing explicit topology information; • Includes Service Level Agreements on all DIA ports; • Provides high-quality, reliable data transfers over the XO nationwide facilities-based Internet network; and • Offers complete solutions that include circuit and equipment ordering, installation, 24 x 7 customer support and proactive network monitoring, and single invoice billing.

Potential Uses of DIA The always-on nature of a Dedicated Internet Access connection allows you to use your connection in ways you may not have been able to previously, whether that means running a web server or simply checking for incoming e-mail as needed. Below is a list of potential uses of your Dedicated Internet Access circuit:

• Corporate communications (e.g., e-mail) • Videoconferencing • Hosting a Web site/Web server • Connection to a small or large corporate LAN • Internet access/Web browsing for every user connected to your LAN • Voice over IP (VoIP)

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• Data transfers (e.g., FTP) from one location to a central site) • Virtual Private Networks (VPNs - that link remote offices together) • Managed security - Your Dedicated Internet Access line could be the building block for establishing a fully-managed security plan for protection of your data (encryption, firewalls, and managed security services) • Remote access (Through IPsec and XO’s Firewall Service)

Product Offerings DIA product portfolio consists of the following offerings: XO Managed or Customer Owned and Managed Premises Routers

Full T1 Internet Access

Multi-T1 (NxT1) Internet Access

Sub Rate & Full T3 Internet Access

Burstable T3 Internet Access

Burstable and full OC 3c Internet Access

10/100 Ethernet Internet Access in the collocation

10/100 Ethernet Internet Access to the customer premises with a special access arrangement or Onnet to XO over fiber

1,000 Mbps Gigabit Ethernet Access

10,000 Mbps Gigabit Ethernet Access

Network Address Translation (NAT) Support

Border Gateway Protocol (BGP) Support

Free Web Basics and Hosting Account

T1 Full T1

• Full T1 of bandwidth over a dedicated, non-fractional leased line • Bandwidth: 1.544 Mbps • Includes a free T1 router • NAT and BGP4 options available • Flat-rate monthly billing

Multi-T1

• An ideal multi-Megabit bandwidth solution for companies that have outgrown their T1 needs, but cannot justify the cost of a DS3 • Bandwidth: 3 Mbps; 4.5 Mbps; 6 Mbps • Includes a free Multi-T1 router • NAT and BGP4 options available • Flat-rate monthly billing

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Ethernet over T1

• An ideal multi-Megabit bandwidth solution using Ethernet connectivity at both ends of the access connection for companies that have outgrown their T1 needs, but cannot justify the cost of a DS3 • Bandwidth: 3 Mbps; 4.5 Mbps; 6 Mbps • Includes a free Multi-T1 router • NAT and BGP4 options available • Flat-rate monthly billing

You may be looking for greater bandwidth capacity to your premises routers than can be accommodated on a single T1 access facility. However, you may not have capacity utilization to be able to justify the expense of a T3 access facility, or your budget may prevent you from obtaining T3 service. Rather, you may be primarily interested in providing enough bandwidth to your users and/or customers in an efficient manner. The XO Multi-T1 Internet Access solution is intended for you if you require increased bandwidth from the Internet but do not want the higher cost of a T3 circuit. Our current NxT1 solution is based on two, three or four T1s connected to an XO provided router configured as MLPPP for contiguous bandwidth across the multiple T1 circuits. The bandwidth capacity obtained through such a configuration is 3, 4.5 or 6 Mbps. All T1s will connect to a single CPE router and to a single Access Router port on the XO Internet Network edge. The XO Ethernet over T1 Access solution is intended for you if you require increased bandwidth from the Internet. Our Ethernet over T1 solution is based on two, three or four T1s connected to an XO provided router with physically configured contiguous bandwidth across the multiple T1 circuits. The bandwidth capacity obtained through such a configuration is 3, 4.5 or 6 Mbps. All T1s will connect to a single CPE router and to a single Access Router port through a switch on the XO Internet Network edge.

DS3 Full DS3

• Delivers a full DS3 of bandwidth over a dedicated access facility • Bandwidth: 45 Mbps • Option to rent a BGP4-enabled DS3 router available • Flat-rate billing

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Fixed Rate DS3 • Predetermined level of bandwidth over a dedicated, non-fractional DS3 leased line • Bandwidth: 6 Mbps to 27 Mbps (in 3 Mbps increments) • Option to rent a BGP4-enabled DS3 router • Flat-rate billing

Burstable DS3

• Choose a commitment rate and pay for bursting above the commit at the same cost per Megabit as the commit rate. • Burstable Commitments from 10 to 40 Mbps in 10 Mbps increments • Option to rent a BGP4-enabled DS3 router • Burstable billing using the 95th percentile data collection rule

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Internet Access via Ethernet XO’s High Speed DIA product suite offers customers the ability to scale their bandwidth by purchasing burstable Internet Access via Ethernet. Large customers who require upwards of 100 Mbps can choose to purchase XO High Speed DIA via Ethernet, Fast Ethernet, and Gigabit Ethernet. XO’s fiber-rich metro assets allow XO to provide Internet Access on its own facilities to customer premises, reducing installation and troubleshooting intervals. Additionally, XO can connect your premises to the XO network over aggregated copper, T1 or T3 loops with specialized equipment to allow for 10, 44 and 87 Mbps Ethernet connections to be created. The burstable price plans allow customers to commit to a specific bandwidth speed, while simultaneously allowing customers to use up to the full port speed, of 10 Mbps, 100 Mbps, 1,000 Mbps or 10,000 Mbps. XO also rents routers for the 10, 15 and 20 Mbps and 100 Mbps service arrangements at reasonable monthly rates. Available devices are the 2951 and 3925 from Cisco for the 100Mbps service and the Adtran 3430, Cisco 2901 and the Juniper 100B for the 10, 15 and 20 Mbps services.

Routers Customer Owned Premises Routers This arrangement provides you with the ability to supply and use your IP router to terminate DIA with XO, giving you the flexibility to leverage your current communication investments. This feature is available with all DIA access rates. It is important to review the manufacturer and model of the router to be used with an XO Sales Engineer to be sure it meets the technical requirements of the DIA port.

XO Provided CPE Routers DIA provides you with 24x7 dedicated connectivity to the Internet, maintained by XO. This service offers a complete solution of Internet service and support including:

24x7 Customer Support, including the monitoring of your circuit

Pro-active monitoring of XO IP backbone network elements

Flexible access methods customized to suit your particular needs

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XO provided maintenance for rented or service provided routers: All DIA customers who are equipped with XO lab tested routers provided by XO will receive this plan automatically:

• Time & Material charges: $175/Hour + materials (if necessary) • Router maintenance covered internally by XO through sparing policies. • Must rent or have the CPE be provided as part of a DIA service delivered by XO. • XO will exchange the router and repair the unit as needed

Commercially reasonable efforts will be made to provide next-business-day service by 10:00 A.M. local time for on-site remedial hardware maintenance requests. However, both the trouble call and determination that on-site service is required must be made before 3:00 P.M. local time the prior day; otherwise, second-business-day service will be provided. This plan also includes installation of all mandatory engineering and factory-change notices. Commercially reasonable efforts will be made to provide four-hour response service for on-site remedial hardware maintenance requests. Maintenance or Trouble Reporting For service or CPE related trouble resolution, please contact XO at 1.800.421.3872

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Do you need BGP? What Is BGP and Do I Need It? Today, many customers want or need to specify access and circuit redundancy for their sites that are connected to the Internet. Border Gateway Protocol (BGP) support for DIA routers addresses this demand. XO supports customers who wish to implement redundant Internet connections with XO and another provider, using BGP to maintain reliable and efficient Internet access. If you have high availability requirements, you want to assure that there is no single point of failure between your location and the locations your want to reach or the locations that need to reach you. Furthermore, you may wish to leverage multiple connections to realize additional benefits such as network load splitting and balancing. BGP is an exterior gateway protocol (EGP) used to exchange routing information between different autonomous systems (AS). This network layer reachability information (NLRI) is maintained in a database on the router, and exchanged with other routers; the NLRI is used to create a graph of AS connectivity, which allows BGP to:

• remove routing loops, • enforce policy decisions, and • forward traffic to the shortest path at the AS level.

It is the protocol used to create the Internet backbone. The most basic criteria establishing the need for BGP is a network with two (or more) upstream provider connections where the customer wishes to announce his network address space to the Internet through these providers for the purpose of provider redundancy and / or shortest path routing. When more than one link connects your network cloud and another network, the links can be used for various traffic purposes. Those links may be used as an additional primary link, a backup link, or for load splitting (i.e., a primary link for certain networks and a backup for others.) In certain cases involving links from a single access router, the links may be used to achieve load balancing. By adding additional links in combination with the appropriate routing configuration, redundancy at the IP layer can be obtained. XO provides BGP support for connection to multiple redundant providers in the direction from XO to you, and is supported at all access speeds. Single provider homed networks do not usually need BGP, and can achieve circuit redundancy or load sharing without running BGP.

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The decision to use BGP is best discussed with an XO Sales Engineer because it depends on the customer network design and needs of the customer.

Utilizing BGP

XO Announcement Options Customers utilizing BGP have options as to what routes we will send them; these options consist of:

• Full Internet Routes – All routes XO receives from its peers, customers and originating from our own network. • XO Only Routes – Routes only originated by XO or received from our BGP customers. • Default Only – A single default route.

A customer who wishes to receive a default route in addition to either full XO routes or full Internet routes needs to request it through the order process. For these outbound announcements to the customer, XO sends Multi-Exit Discriminator (MED) attribute and unaltered community attributes. These MEDs help give the customer a better routing decision, which reflects those destinations on the XO network that may be closer to the POP where the customer is connected. XO sets MED to the following values:

• “1” for 2828 aggregates • “2” for routes tagged with the local market community, and • “3” for everything else.

Customer Announcement Restrictions Customers are limited in what XO will accept as valid routes. Any non-compliant routes are discarded. Customers should strictly filter their announced routes to only those authorized by XO, rather than depend on XO customer controls. The following limitations are applied to XO BGP customer announcements: • Prefix Limits – Every prefix should either be assigned by XO provisioning / pre-sales / IP admin group or a registry (ARIN, RIPE, APNIC, etc.) directly. If the block is out of another ISP's aggregate, our Best Current Practice requires a letter or email from a representative of that ISP, authorizing XO to accept and re-advertise the prefix(es) from the customer's AS / connection. XO does not accept prefixes shorter than a /8 or longer than a /24.

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• AS-Path Limits – XO will only accept routes from the customer AS and any downstream AS using that customer network for transit services. XO rejects any route not explicitly allowed. Direct request for addition of a customer downstream AS and / or prefix needs to be made via an email to [email protected]. • Community Attribute – Customer announcement communities are limited to the two “well known” values of “no-export” and “no-advertise”. All other communities – with the exception of customer signaled, private communities (described further in this document) – are deleted from the update. Other than the deletion of the unauthorized community, the routes are treated like any normal advertisement. While XO filters on customer-announced routes, it is the responsibility of the customer to ensure they are only sending approved routes. XO reserves the right to protect its network from both authorized and unauthorized announcements that may result in any negative impact to the XO network and the Internet at large. These actions may include – but are not limited to – maximum-prefix peer shut down mechanisms, route filtering or peer administrative shut down until the problem is corrected. XO Community Controls: Customers can control their routing through a variety of methods. Some of these are special community based controls implemented by XO, while others are standard BGP controls. - Local-Preference For our BGP customers, XO has implemented a powerful, flexible system whereby we allow our customers to control – via predefined communities – the XO treatment of their announcements. These communities control XO local-preference (local-pref) of customer-announced routes within our network. The most powerful attribute is local-preference. In BGP, the higher the local-preference, the more preferred the route on the network. This affects XO backbone route selection only, and not the route selection made by XO peers and customers, because local preference is non-transitive. This means it does not get passed beyond the XO network. The customer has a range of six local-preferences to which they can set their routes.

mailto:[email protected]

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The following table details the local-prefs, including the actual value, the community accepted from the customer to set the local-pref, and a description of what that local-pref will do in the network.

- AS-Path Controls The next attribute that customers can use to control their routing is via AS path length. The most common use of AS-path prepending is in a direct peering route-map on the customer end where they can prepend their own AS to their routes as they announce the routes to AS2828. XO also accepts communities that prepend AS 2828 either one time or three times to the route as it leaves the 2828 network. Currently, there are three general groups on which the customer can set 2828 prepends:

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- Origin Attribute Another standard option for customers to control XO treatment of their advertisements involves the use of the origin attribute. XO does not alter origin code on routes customers send us. Routes set with the IGP origin code are more preferred than routes tagged with the origin EGP code, which are more preferred than origin-Incomplete routes. - DoS Discard Community XO provides a mechanism allowing customers to trigger the XO backbone to discard all traffic entering the XO network from external sources destined for any routes specifically announced by a BGP customer with a special community. - MED Controls Another standard option for customers to control XO treatment of their advertisements involves the use of the MED attribute. The lower the MED attribute set on a route, the more preferred the route. XO currently accepts MED from its customers. For more details on (Cisco) BGP path selection and attributes, see Cisco's Web site.

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NAT – Network Address Translation This feature allows you to use private addresses from your internal network and still connect to the Internet via a T1 or multiple T1. To do so, XO allocates a block of registered XO addresses to you for use on your XO-managed CPE router that performs Network Address Translation (NAT). NAT is used on the CPE router to provide you additional addressing flexibility through use of “private” IP addresses, allow interconnection with other internal networks that may already have their own addresses, and allow you to use a smaller number public IP addresses on your Internet connection. If you have implemented a private addressing scheme throughout your networks, routing over public networks with such an addressing scheme is not possible without the use of tunneling or other scheme. The Network Address Translation feature solves this problem. NAT converts your inside addressing schemes into the registered addresses prior to forwarding the packets to the public Internet. The translation is fully compatible with standard routing functionality and features. NAT allows you to utilize public network infrastructure for transport and not change the existing IP addressing scheme (using public or private IP addresses) in your enterprise.

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Network Overview and Map

The XO IP network consists of three main network elements; (1) Peering infrastructure to the rest of the Internet, (2) a core 10 Gigabit IP backbone and (3) DIA and DSL access POPs in the local markets. The figure below shows the XO IP Network, including peering interconnections, the 10 Gigabit IP backbone and local market DIA POPs

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The XO 10 Gigabit IP Backbone The core of the North American XO IP backbone is a mesh of multiple 10 Gigabit circuits, interconnecting peering, Data Centers, and local DIA POPs in each market. XO has implemented a multiple 10 Gigabit IP backbone that runs completely across its own Inter-city facilities. Using a mesh of physically diverse 10 Gigabit circuits, this backbone interconnects local market DIA points of presence (POPs) with multiple high-capacity peering interconnections. Each DIA POP is connected into the 10 Gigabit IP backbone with OC-48c or 10 Gigabit circuits, depending on traffic requirements. This network design delivers maximum end-to-end throughput as well as providing high levels of protection and redundancy. The XO 10 Gigabit backbone utilizes an advanced IP design, ensuring scalability to accommodate our growth in the future as well as the added benefit of having no single IP point of failure beyond the customers' port. And since the XO 10 Gigabit backbone and market connections run end-to-end across XO facilities, XO can quickly resolve any problems that may occur without any delays.

Peering Infrastructure

As one of the few facilities-based Tier 1 network backbone providers in the U.S., XO has substantial private peering arrangements in many metropolitan areas at speeds of up to 10 Gbps. As a Tier 1 Internet provider, XO is constantly improving its peering infrastructure to benefit our customers. Those advantages include: Multiple and geographically redundant dedicated connections to other

Tier 1 Internet backbones. Dedicated and private connections mean that traffic crosses the XO backbone and the peering partner's backbone without transit through another ISP. Customers benefit because data packets to and from the peered networks reach their end destination quickly and with lower risk of packet loss.

XO peering relationships are monitored and maintained 24x7.

Quality control of the XO network is high as we do not have to rely on other ISP networks for Internet connectivity.

DIA Points of Presence (POPs) in Markets

XO currently offers Dedicated Internet Access connections via 36

Metro POPs in 31 markets. All DIA markets are connected to the

closest 10 Gigabit IP Core Node; dual uplinks are provided from each

Metro market into the closest Inter-city core node using OC-48 or 10

Gigabit links.

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Usage Based DIA Reporting XO provides Usage billed DIA for Burstable Ethernet 100, Gigabit Ethernet and DS3 Services. As customer businesses have evolved, their need for data services have changed from easily predictable static usage patterns to more dynamic usage patterns with seasonable and time of day bandwidth peaks. The more sophisticated a customer becomes and the more complex their business model gets, the more the customer expects to pay for usage, rather than an entire “big pipe” which might only be used at full capacity a couple of hours per day/week/month. In summary, usage based billing for DIA can be defined as follows:

Customers will have access to a full port speed connection but they only pay for their actual commitment plus any usage seen above the commitment up to the full port speed.

Usage Billing is calculated based on the 95th percentile rule - Data transmissions are sampled in 5 minutes intervals - Monthly samples are ranked from largest to smallest for inbound or outbound and the larger amount is used - The top 5% of samples are discarded - Customer is billed based on the remaining 95th percentile of usage

All usage based customers will have MRTG enabled on their XO port. MRTG will measure the bidirectional usage on the port every 5 minutes. This usage info is then put in a graph showing both inbound and outbound traffic. MRTG stats are a reflection of the actual traffic on the XO router where MRTG stats are collected. On the chart below the green zone, “inbound”, is traffic that is coming towards the XO router from the customer. The blue line, “outbound”, is traffic that leaves the XO router towards the customer.

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XO Usage Reporting XO Usage Reporting provides several formats for new or existing customers to view performance statistics, from average monthly latency and packet loss metrics for the Core IP network to near real-time, circuit utilization rates for a customer’s DIA circuit(s). Additional formats include graphical displays for daily, weekly and monthly statistics throughout a calendar year.

Overview

The XO Usage Reporting system found at XOStats allows you to track and monitor your web usage (throughput) by circuit and port. This information allows you troubleshoot, plan future capacity requirements, and help track usage spikes during peak usage. In addition, the tool can help track spikes during peak periods. The graphs, which are auto-scaled according to the range of output, are based on a linear scale. For your convenience, you can view the data for each circuit by day, week, or month.

Introduction to XO Usage Reporting

The information to follow should help you become more familiar with the XO Usage Reporting system. If you are experiencing problems or require help with reporting, please contact XO Customer Care at 1.800.421.3872. Overview

Downloading Data and CSV Files

Diagnostic Tools

Help

Glossary of Terms

http://x41.xostats.xo.com/cgi-bin/xostats/Login.pl

http://x41.xostats.xo.com/help/index.html#OV

http://x41.xostats.xo.com/help/index.html#DL

http://x41.xostats.xo.com/help/index.html#DT

http://x41.xostats.xo.com/help/index.html#HP

http://x41.xostats.xo.com/help/index.html#GT

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The following is a sample of graph for a one day period

Downloading Data and CSV Files

A CSV file is a comma delimited text file. It can be opened by numerous applications including almost all text editors, spreadsheets, and web browser. This format should be easy to import and use in your own applications or documents. You will notice in CSV files, the heading 'inbytes'; this is the number of bytes received during the given time period. 'Outbytes' is the number of bytes sent during the given time period. If the program that you are using fails to display the first 'date' field successfully then expand the width of the column. It should then successfully display.

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If you view a CSV file for calendar day, the data will be broken down poll intervals. Here is an example of such a file that in this case is being displayed in Internet Explorer

All dates are in listed as "month/day/year" format. If you press the "Graph all Lines" link, all circuits for the chosen day will be displayed. "Graph Just this Line" all but the chosen graph will disappear. "Return to List" will bring you back to the starting page.

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Diagnostic Tools

This provides tools for customers to examine connectivity, path, and route information in the XO Data Network. The following is the list of available tools.

Traceroute

Traceroute provides information on the path that packets traverse from XO Core Node to a user specified destination.

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Ping

Ping verifies the network connectivity between a XO Core Node to a user-specified destination.

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BGP Routes

The BGP (Border Gateway Protocol) Routes provides BGP routes statistics from each XO Core Node.

Help

If you have any questions or experience any issues with the XO Usage Reporting system, please contact Customer Care at 1.800.421.3872.

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XO DIA Service Level Agreements

XO DIA and Combined Services are backed by specific service level guarantees. If these guarantees are not met, the credit set forth below will be issued if requested by the customer and verified by XO, following the procedures outlined below. The total of all credits provided under this SLA are limited to the monthly recurring charges for the affected DIA or Combined Services for the affected month of service.

Network Availability Guarantee - 100%

The XO IP Network, as defined in this section, is guaranteed to be available and capable of forwarding IP packets 100% of the time, as averaged over a calendar month. The XO IP network includes the customer's access port (the port on the XO aggregation router upon which the customer's circuit terminates) and the XO IP backbone network. The XO IP backbone network includes XO owned and controlled routers and circuits (including any transit connections). The XO Network Availability guarantee does not include the local access circuit (e.g. local loop), Customer Premises Equipment (router or CPE) or Customer's Local Area Network (LAN), scheduled maintenance events, network events on redundant network elements, customer caused outages or disruptions, interconnections to or from and connectivity within other Internet Service Provider (ISP) networks, and force major events (as defined in the relevant service contract). If the Network Availability guarantee is not met in a calendar month, the customer will receive a credit of 1/30th of the monthly recurring charge (MRC) for that month for each full hour of outage in excess of the 100% guaranteed under this SLA. Limits on the credit and the reporting procedures are detailed below.

Latency Guarantee (55 Milliseconds Round Trip)

The XO IP backbone network (as defined in the previous section) is guaranteed to have an average round trip packet transit time within the XO IP backbone network over a calendar month of 55ms or less. The average latency is measured as the average of 15-minute samples across the XO IP backbone network taken throughout the month. The

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XO Latency guarantee does not include the local access circuit (e.g. local loop), CPE or Customer's LAN, scheduled maintenance events, customer caused outages or disruptions, interconnections to or from and connectivity within other ISP networks, and force major events (as defined in the relevant service contract). If the Latency guarantee is not met in a calendar month, the customer will receive a credit of 1/30th of the monthly recurring charge (MRC) for that month for each full 1ms above the 55ms average maximum guaranteed under this SLA. Limits on the credit and the reporting procedures are detailed below.

Packet Loss

Maximum average packet loss of 1 percent during any calendar month.

Jitter Measurement

No greater than 1 millisecond (Ms) average during any calendar month.

Credit Limits and Reporting Procedures

To receive credits, the customer must contact XO Customer Care within two business days at 1-888-575-6398 for XOptions and Voice services, and at 1-888-699-6398 for Data and Web services. The customer must provide information supporting the claim of a SLA violation such as PING and/or traceroute output taken at the time of the occurrence, which demonstrates the problem(s) being reported. XO will take all measures it deems appropriate to Investigate reported outages. Determination of credits due pursuant to this SLA will be made solely by XO. Total credits under this SLA are limited to the monthly recurring charge for the affected DIA service or Combined Service for the month in which the service does not meet the guarantees.

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