10.8. Global Server Load Balance (Global Traffic Managemnet)


10.8.1. Overview

10.8.1.1. Overview

Global Server Load Balance (Global Traffic Management) can use Load Balance Service provided by Akamai Technologies, Inc., and provides control functions of communication to servers in multiple sites.
Rule-based load balancing will become possible by redirecting end user’s access FQDN to this menu.
(Global Server Load Balance (Global Traffic Management) will be described as “this menu” or GSLB (GTM) hereafter.)

GTM Concept

10.8.1.2. Features

Following are the features of this menu:

1.It provides stable infrastructure with large-scale distributed platforms
Use of platforms distributed in 26 countries and over 195 sites helps to secure availability withstanding massive DDoS attacks.
With dispersed DNS, a server closer to the end user gives responses, which will promise faster responses than Appliance services on a single site.

2.Reduction of vulnerability risks by originally developed software
As originally developed software is applied to DNS servers, a secure environment is available where vulnerability information that general BIND has as DNS software is not applicable as is.

3.It provides traffic management functions that fit customers’ needs
A traffic sorting architecture that meets customer’s purpose of use can be selected by Failover function, IP Intelligence function and Weight function.


10.8.2. Available Functions

10.8.2.1. List of Functions

Following functions are available with Customers with this menu:

Name

Description

Failover function

DR function that detects down of the Primary server and redirects accesses from end users to the Secondary server

IP intelligence function

Function to decide a server to access by using IP address of end user’s country.

Weight function

Function to decide a server to access by using a ratio set per each server.

Portal function

Function to check subscription, report and alert status.

Note

Either one of Failover, IP Intelligence and Weight functions can be selected per FQDN setting.



10.8.3. Description of Functions

10.8.3.1. Failover function


Failover

Failover function provides the following functions.

Functions

Description

Failover

Function to switch access destination to the Secondary server when the Primary server is judged to be down from health check result.

Health check

Function to run health check to specified contents common to each server.

Note

If the Primary server is judged to have recovered, the access destination will be switched back to the Primary server.



Failover
Customers specify following items when they use Failover function.

Items

Description

Domain name

Specifies the domain name of FQDN that end users access.

FQDN name

Specifies the name of FQDN that end users access.

Name of the country where the Primary server is installed

Specifies a name of the country that sets the Primary server.

Name of the country that sets the Secondary server

Specifies a name of the country that sets the Secondary server.

IP address (or FQDN) of the Primary server

Specifies IP address or FQDN of the Primary server.

IP address (or FQDN) of the Secondary server

Specifies IP address or FQDN of the Secondary server.

Note

  • A server in a region closer to the country selected by the name of the country that sets servers will run health check.

  • If both IP address and FQDN are specified for a server, only FQDN will be used.

  • The number of server FQDNs that can be set is 1.



Health check
Customers specifies following items when they use Healthcheck function.

Name

Description

protocol

Specifies protocols to use when health check is conducted.
HTTP(80) or HTTPS(443) is available.

Health check file name

Specifies a contents URI of the health check target.

Alert notify mail address

Specifies the mail address to notify to when health check fails.

Note

  • Access to the health check file from multiple Akamai Agents occurs every minute. Please note that if the access is denied by FW rules, it will be decided as the origin server down and communication to the corresponding server will not occur.

  • Decision of origin server down will mainly occur when acquisition of health check file name fails (Response code 4XX or 5XX is returned, or connection timeout occurs) or when Response Time is not less than 4 seconds.



10.8.3.2. IP intelligence function


IPinteligence

IP intelligence function provides the following functions.

Functions

Description

IP intelligence

Function to decide a server to access by using IP address of end user’s country.

MAP

A function that defines GSLB Zone information and applies it per FQDN that end users access.

Note

IP intelligence does not have health check function.



IP intelligence
Customers specifies following items when they use IP intelligence function.

Items

Description

Domain name

Specifies the domain name of FQDN that end users access.

FQDN name

Specifies the name of FQDN that end users access.

Map name

Specifies the name of a Map corresponding to FQDN that end users access.

GSLB Zone Origin FQDN

Specifies FQDN of sorting destination server if there is access from end users in a region defined by GSLB Zone.

GSLB Other Zone Origin FQDN

Specifies FQDN of sorting destination server if there is access from end users in a region other than those defined by GSLB Zone.

Note

  • For Origin FQDN, only FQDN can be specified. You cannot specify the IP address.

  • The maximum number of servers you can specify per access FQDN setting is 3.



GSLB Zone
Defines GSLB Zone in advance to use it for the setting of IP intelligence.

Name

Description

GSLB name

Defines the name of GSLB Zone to use.

Region

Defines regions included in GSLB Zone.



10.8.3.3. Weight function


Weight

Weight function provides the following functions.


Weight
Customers specifies following items when they use Weight function.

Items

Description

Domain name

Specifies the domain name of FQDN that end users access.

FQDN name

Specifies the name of FQDN that end users access.

Name of the country that sets the server

Specifies the name of the country that sets the server.

IP address (or FQDN) of the server

Specifies IP address or FQDN of the server

Connection ratio

Specifies ratio of sorting traffics to each server.

Note

  • A server in a region closer to the country selected by the name of the country that sets servers will run health check.

  • The maximum number of servers you can specify per access FQDN setting is 3.

  • If both IP address and FQDN are specified for a server, only FQDN will be used.

  • The number of server FQDNs that can be specified is 1.



Health check
Customers specifies following items when they use Healthcheck function.

Name

Description

protocol

Specifies protocols to use when health check is conducted.
HTTP(80) or HTTPS(443) is available.

Health check file name

Specifies a contents URI of the health check target.

Alert notify mail address

Specifies the mail address to notify to when health check fails.

Note

  • Access to the health check file from multiple Akamai Agents occurs every minute. Please note that if the access is denied by FW rules, it will be decided as the origin server down and communication to the corresponding server will not occur.

  • Decision of origin server down will mainly occur when acquisition of health check file name fails (Response code 4XX or 5XX is returned, or connection timeout occurs) or when Response Time is not less than 4 seconds.


10.8.3.4. Portal function

In this menu, Control Panel is provided for order-related operations, and Akamai Portal functions for usage status view.

Name

Purpose

Control panel

You can place subscription order of menus and check the order status.

Akamai portal

You can check reports and alerts about this menu in use.


Control panel

On the Control Panel, following operations can be conducted.

Items

Description

Main screen

You can check details of subscription in use or on order.

Setting sheet form download

You can download a subscription order file of this menu from here.

New/Additional order

You can place order for new/additional subscription plan.

Order correction/Change of setting sheet

•You can use this to remand/correct the details of subscription when you place order of new/additional subscription plan.
•Setting change of existing FQDN and additional order for FQDN setting are possible within the plans in use.

Terminations

You can request to terminate the plans in use.



Akamai portal

Akamai Portal function provides the following functions.


Profile function
Items that can be operated from Profile function are as follows.

Items

Functions

Email Address

An account (mail address) used for login can be changed.

Timezone

The timezone on Akamai Portal can be specified.

Language

The language displayed on Akamai Portal can be specified.

New Password

The password of an account used for login can be changed.



Report function
Items that can be operated from Profile function are as follows.

Items

Functions

Traffic Status

The number of DNS requests can be checked.

Errors

You can check the contents of the health check judged as errors from the health check result.

Note

  • Akamai Portal does not support single sign-on from an ECL2.0 portal.

  • Report of the number of DNS requests per FQDN can be downloaded in CSV format.



Alert function
Items that can be operated from Alert function are as follows.

Items

Functions

Active alert

Customers can check alert occurrence status and Alert setting.

Note

  • If it is decided as sever down from the result of health check, an alert mail will be sent to the registered address.



10.8.4. Menu

10.8.4.1. Menu / Plan

This menu provisions the following Plans:

Plan

Number of available FQDNs

2 FQDN 2
5 FQDN 5

Note

  • If you need setting for 4 FQDNs, choose either (2 FQDN Plan × 2) or (5 FQDN Plan × 1).

  • If you plan to use 5 FQDNs or more, please talk with our sales representative.


10.8.4.2. Subscription Methods

Any Customers who contracted Enterprise Cloud 2.0 can opt to place an order for subscription for this particular Menu.
Followings are the Subscriptions Types:

Order Types

Details

Subscription Methods

Offering Date

New Plan

Addition of a usage plan.

It can be done by placing order with a Subscription Order sheet from “New/Additional Subscription” on the Control Panel.

Fourteen business days

Delete Plan

Terminate Plan

It can be done by requesting with a Request sheet from “Deletion Request” on the Control Panel.

Five business days

FQDN New

Addition of new FQDN setting (in case of FQDN addition due to rooms of the number of FQDNs in the plan in use)

It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel.

Five business days

FQDN Change

Change of FQDN setting already set (including new/change/deletion request of Akamai Portal account)

It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel.

Five business days

FQDN Deletion

Deletion of FQDN setting already set

It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel.

Five business days

Note

  • Offering Date shall conform to business days (Saturday, Sunday and holidays are excluded) of Japan Region of NTT Com.

  • Counting of business days will start after the receipt of subscription order and after NTT Com has confirmed that errors or omissions do not exist in the order form.


10.8.4.3. Restrictions In Subscriptions

Following are the sales unit, the number of uppermost maximum and lowermost minimum units.

Unit

Maximum Number

Minimum Number

Subscription Plan

No limit

One (1) Plan

Note

  • If you use 5 FQDNs or more, Global Traffic Management, which is our CDN service, is recommended. Please talk with our sales representative.

  • Though there is no upper limit to the number of plans, the upper limit to the number of FQDNs that can be set by subscription order at a time is 10 (subscription of 5 FQDN Plan × 2).


10.8.5. Terms And Conditions

10.8.5.1. Common

In this menu, CNAME has to be set to DNS for end user access destination FQDNs and the communication has to be led in to the Akamai Platform.
Please prepare DNS environment by yourself or subscribe our DNS service.

CNAME

10.8.5.2. Usage Conditions with Other Service Menus

This menu does not specifically limit as with combined usage with any other services.


10.8.5.3. Minimum Usage Period

This menu does not require any minimum usage period.


10.8.6. Pricing

10.8.6.1. Initial Fee

This menu does not require initial fees regardless of the plan or the subscription type.

10.8.6.2. Monthly Fees

This menu, regardless of the use of time, has a monthly fixed fee.
If subscription plans are added/deleted in the middle of a month in the same tenant, monthly fees related with the plans used in the month to charge are compared with each other and the highest amount shall be applied as the monthly fee.


10.8.7. Quality of Service

10.8.7.1. Support Coverage

All functions provided in the menu fall within the support coverage.
However, Customers are duly advised that those architectures utilizing this menu (or the “Device” ) will be aside the coverage.

10.8.7.2. Operations

The Maintenance and troubleshooting of control panel which customer subscribe this menu is provided by according to Service Descriptions Support.
Regarding to functions and Akamai Portal, The information of maintenance and trouble is available on message center of Akamai Portal.
Akamai does not set maintenance window. Akamai portal maintenance is usually implemented at Thursday 02:45 to 03:15 UTC or 03:45 to 04:15 UTC every month.
The inquiry of this menu is provided by according to Service Descriptions Support.

10.8.7.3. SLA

SLA of this menu regulates to the SLA that is standardized in regular Enterprise Cloud 2.0 servicing operations.


10.8.8. Restrictions


-The maximum number of accounts to be delivered for Akamai Portal is 5.
-Along with the use of this menu, DNS setting (CNAME) of access destination FQDN shall be made by customer’s responsibility.
-Access destination FQDNs, IP addresses, FQDN or IP address of the server, which are used in this menu, shall be prepared by the customer.
-This menu offers only API for placing subscription orders and does not offer API for setting change of services in use.
-Concerning the functions provided by this menu, NTT Com shall not guarantee their completeness, accuracy, or fitness for the customer’s purposes of use.
-NTT Com shall not guarantee recovery from faults that may be caused from incompatibilities between the components of this menu and the customer’s environment, or from faults caused by customers operation other than those specified by NTT Com.
-Following information may be provided to developers or sellers of the devices comprising this menu.
-Information on setting obtained through the provision of this menu.
-Information on control, etc. of this menu.