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Why does a CDN edge server require 3 IP addresses?

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    Khairul Anwar

    The 3 IPs allows us to quickly identity the correct CDN resource that being DDOS. When edge server assigned with multiple IPs, the system will distribute the resources across the IPs.

    Edge Server A
    cdn.a.com will be assigned to serve from 1.2.3.4
    cdn.b.com will be assigned to serve from 3.4.5.6

    Edge Server B
    cdn.a.com will be assigned to serve from 7.8.9.0
    cdn.b.com will be assigned to from 4.3.2.1

    So with this unique combination, we can quickly identify the CDN resource under the event of DDOS. We will proceed to suspend the CDN resource if the attack magnitudes impacts the system

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