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zhoumeng
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Reviewed-by: Hajba, László Antal <laszlo-antal.hajba@t-systems.com> Co-authored-by: zhoumeng <zhoumeng35@huawei.com> Co-committed-by: zhoumeng <zhoumeng35@huawei.com>
12 lines
846 B
HTML
12 lines
846 B
HTML
<a name="elb_faq_0131"></a><a name="elb_faq_0131"></a>
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<h1 class="topictitle1">Why Must the Subnet Where the Load Balancer Resides Have at Least 16 Available IP Addresses for Enabling IP as a Backend?</h1>
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<div id="body0000001181021511"><p id="elb_faq_0131__p8060118">These IP addresses are used by the ELB system. Generally, two IP addresses are required for creating a dedicated load balancer in a single AZ, and six IP addresses are required for creating a dedicated load balancer with IP as a backend enabled. If you create a dedicated load balancer in multiple AZs, more IP addresses will be required. There is an algorithm to calculate how many IP addresses are required.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="elb_faq_0203.html">Backend Servers</a></div>
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