This CenturyLink Service Guide (“SG”) sets forth a description of Hosted Area Network (“HAN”) offerings by CenturyLink (collectively, “Services” or “HAN”), including technical details and additional requirements, if any. This SG is subject to and incorporated into the Service Agreement and the CenturyLink TS Service Exhibit including the Hosting Service Schedule between the parties. The specific details of the Service ordered by Customer will be set forth on the relevant Service Order. For avoidance of doubt, any references in the Agreement, Schedules, or Service Orders to SSG, will mean SG. The applicable SLA is at https://www.ctl.io/legal/managed-hosting/internet-connectivity-sla/.
The HAN provides access to the Internet as well as between Customer servers and applicable data centers. The Service is a non-managed service and all equipment and management will be provided by the Customer. The applicable Service package is HAN Internet Access 3.0.
Included in Service
Port allocation between the CenturyLink network and Customer provided equipment. Additional service for HAN Access Extension is required to provide either via a single cross connect (Single-Line Service) or via dual cross connects (Multi-Line Service). Service also includes:
Fast Ethernet in the United States and Europe - 100Mbps; or
Gigabit Ethernet in the United States and Europe- 1000Mbps; and
Troubleshooting of CenturyLink-provided components; and
Guidance with installation of cabling between the Customer patch panel and the CenturyLink patch panel via Eco System connect in a Cyxtera Facility or direct cabling in a 3rd party data center.
For copper connections, CenturyLink provides CAT6 patch cable, termination is the RJ45 connector.
For fiber connections, CenturyLink provides 62.5 micron Multimode duplex 1000Base SX fiber patch cable, termination is the SC-SC connector. If different fiber optic termination is required for patch cable, Customer must provide its own cable (i.e., SC-MTRJ).
Not Included in Service
Purchase of Customer equipment, including any applicable routers required for connectivity that supports BGP. If full routes are required, router must have appropriate memory and/or processing power to support the BGP routing table. The different service options selected below may require additional equipment
Support of Customer equipment
IP addresses consistent with CenturyLink IP policies and what the Customer can justify. If ordered by Customer, CenturyLink will use good faith efforts to assign Internet address space for the benefit of Customer during the Service Term. Any IP addresses and space provided to Customer by CenturyLink are solely for Customer's use with the Service, and are non-portable and non-transferable. Neither Customer nor any of its end users will own or route any IP addresses or space provided by CenturyLink, and, upon any termination of Service, Customer's access to such IP addresses and space will cease.
Usage Based Billing
CenturyLink bills Customers monthly in advance for base bandwidth monthly recurring charges. For bandwidth usage above the base amount, an additional per megabit usage charge will be billed at the end of each month. CenturyLink uses the 95th percentile measurement rule of the higher of the ingress or egress traffic to calculate the additional bandwidth usage charges above the base bandwidth recurring charges.
The bandwidth reporting system captures average data point's usage every five (5) minutes for each network line for ingress, egress, and total bandwidth data. The highest 5 percent of the data points out of a given set (ingress or egress or total) of data points over the billing period are discarded. The highest data point from the remaining data points is the 95th percentile value of the data set. Bandwidth reporting provides aggregate 95th percentile measurement billing for multiple lines within one data center. If the Customer has lines in more than one data center, each subgroup aggregate 95th percentile is summed together to get the total usage.
Single-Line Service Delivery Options
Single-Line Routed - Static Route. The Single-Line Routed – Static Route option provides a single uplink to the CenturyLink IP backbone. The Service provides an individual uplink to the CenturyLink IP backbone. Customers have the option of purchasing Switched Single-Line Service, Statically Routed Single-Line Service, or BGP Single-Line Service. All Internet traffic is routed from the Customer’s router to CenturyLink via a static default route.
Single-Line Routed – BGP. The SingleLine Routed – BGP option provides a single uplink to the CenturyLink IP backbone. All Internet traffic is routed from the Customer’s router to CenturyLink via BGP. Setup of the default route using BGP between CenturyLink and the Customer is included with this delivery option.
Single-Line Switched - Static Route. The Single-Line Switched – Static Route option provides a single uplink to the CenturyLink IP backbone. All Internet traffic is routed from the Customer’s LAN to CenturyLink via default route. Unlike Single-Line Routed - Static route, where the Customer manages its own router, with Single-Line Switched, routing for the Customer network is done via the CenturyLink provided network router.
Multi-Line Service Delivery Options. The Multi-Line Service option provides increased network reliability and scalability through redundant uplinks and maintains continued connectivity to the CenturyLink IP backbone in the event of failure of one of the uplinks.
In existing HAN 1.0 facilities (services residing on Cisco 6509 infrastructure), Multi-Line Service supports two uplinks into the CenturyLink network running either in active/active mode, or in active/failover mode.
In existing HAN 2.0 facilities or HAN 3.0 facilities (services residing on Cisco 93108 or 93108 infrastructure), Multi-Line Service supports two uplinks into the CenturyLink network running in an active/failover mode only.
Multi-Line Routed - Static Route. The Multi-Line Routed – Static Route option provides increased network reliability and scalability through redundant uplinks using static routes and maintains continued connectivity to the CenturyLink IP backbone in the event of failure of one of the uplinks. The uplinks for this option are available in active/failover or active/active modes.
Multi-Line Routed – BGP. The Multi-Line Routed – BGP option provides increased network reliability and scalability through redundant uplinks using BGP and maintains continued connectivity to the CenturyLink IP backbone in the event of failure of one of the uplinks. The uplinks for this option are available in active/active mode. Setup of the default route using BGP between CenturyLink and the Customer is included with this delivery option. Public ASN for multi-homing Customers is not included.
Multi-Line Switched – Static Route. The Multi-Line Switched – Static Route option provides increased network reliability and scalability through redundant uplinks using static routes and maintains continued connectivity to the CenturyLink IP backbone in the event of failure of one of the uplinks. The uplinks for this option are available in active/failover mode only. This option requires dual Customer provided switches.
Multi-Line Switched - HSRP (Select data centers). The Multi-Line Switched – HSRP option provides increased network reliability and scalability through redundant uplinks using HSRP and maintains continued connectivity to the CenturyLink IP backbone in the event of failure of one of the uplinks. This option requires dual Customer provided switches that support HSRP.
Traffic Limitations for Multi-Line. Due to the behavior of Multi-Line, traffic is limited to half the aggregate uplink capacity. In the event of a failure of a single uplink, maximum aggregate bandwidth will be reduced by the bandwidth of the failed uplink. Customer must capacity-manage their network topology and utilization to not exceed the available active uplink capacity.
CenturyLink provides automatic transition to and from the active uplink to the failover uplink if a network device fails. For all Multiline except BGP, transition from the active uplink to the failover uplink should occur within 10 seconds of link failure and is fully automatic.
For Multi-Line BGP, the failover timer is up to 180 seconds. This failover protection covers against failures in the cable plant, CenturyLink switches, and Customer equipment directly attached to CenturyLink equipment. It does not provide failover within Customer’s back-end network.
Currently Recommended Equipment.
Gigabit Ethernet (Gig E)
Fast Ethernet (Fast E)
CenturyLink is not responsible for failure or interruptions of the Service due to any reason related to Customer provided equipment, including failure to select or maintain compatible equipment.
HAN-Related networking services may be added for additional charges.
HAN Ports. Provides physical ethernet connectivity to the HAN. Each Virtual Intelligent Hosting Node includes two Gigabit HAN ports for Customer-related network traffic and a third Gigabit HAN port for CenturyLink management of the solution.
VLANs (Virtual Local Area Networks). VLANs provide tagged or untagged networks that provide common or separate local area networks. Each Customer is provided a single VLAN per data center, in addition to the IP transit VLAN at the routing gateway of the HAN. Additional VLANs are available for an incremental fee. All networking infrastructure is redundant and multiple methods of failover protection are used including VVRP, RIP and OSPF. Customer solutions can be designed with the following standard options:
Basic service used when traffic from multiple servers is not required to be segmented for performance or security. In most cases, the VLAN is configured to access the public Internet through the CenturyLink IP backbone
Typically a private VLAN carries traffic that is not destined for the Internet. This can be intra-site communications, between application and database server, or for integrated connectivity with other CenturyLink services
Premier service in which public and private VLANs are designed specifically to isolate traffic in "tiers" within the server architecture. Firewalls are usually also used in this model to add another layer of security and purchased separately from this service
HAN Connect. The HAN Connect service provides a Fast or Gigabit-based Ethernet cross-connect from the HAN to a Customer's colocation-based network. This service allows Colocation customers to integrate their existing networks with the Virtual Intelligent Hosting service.
Internet Bandwidth. Packets moving to or from the Public Internet are charged separately as a HAN service. CenturyLink uses the CenturyLink Internet backbone for Internet transit services. CenturyLink manages and monitors all connectivity points within the data center and on the CenturyLink Internet backbone. Every HAN Port is inventoried in the applicable CenturyLink portal (“Portal”) for tracking, management and trouble resolution.
Firewalls. A CenturyLink-provided Firewall solution is required in conjunction with Customer contracted colocation at Cyxtera or other available third-party colocation locations or Managed Hosting Services. CenturyLink Managed Firewall Services are subject to separate rates and terms.
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