Advanced GSLB configuration for IPv6 | 2 |
The command results in an
NOTE
If no IP list is defined for the host, the IP weight for the host IPs are removed from the GSLB DNS zone configuration whenever the GSLB ServerIron ADX reloads.
Use the show gslb dns command to view information about the distribution of traffic after the configuration of weighted IP metrics. For more informaiton see “Displaying DNS zone and hosts” on page 237.
Weighted site metric
You can configure the ServerIron ADX to distribute SLB traffic among GSLB sites based on weights configured for the sites. The weights determine the percentage of traffic each site will receive in comparison with other sites, which may or may not have weights.
NOTE
You cannot use the weighted site metric if the weighted IP metric is enabled. You assign weights to GSLB sites. Each GSLB site may consist of one or more ServerIron ADXs, but the weight is applicable to the site as a whole.
The GSLB ServerIron ADX uses relative percentages in order to achieve 100% total weight distribution.
You can configure the ServerIron ADX to distribute SLB traffic among GSLB sites based on weights configured for the sites. The weights determine the percentage of traffic each site will receive in comparison with other sites, which may or may not have weights.
The GSLB ServerIron ADX uses relative percentages in order to achieve 100% total weight distribution, as shown in Table 19 and Table 20. In Table 19, the total of the Configured weighted site metrics (second column) is 100. The last column shows that the GSLB ServerIron ADX distributes the traffic to the IP addresses exactly as configured. In this example, traffic distribution is straightforward because the total weight of all three GSLB sites equals 100.
TABLE 19 | Example weighted site metric configuration |
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GSLB site | Configured weighted site metric | Relative weighted site metric |
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San Jose | 50 | 50% |
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New York | 30 | 30% |
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London | 20 | 20% |
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Total | 100 | 100% |
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Now consider the example in Table 20. In this example, the total of the configured weighted site metrics (second column) does not equal 100. However, as illustrated in the last column, the GSLB ServerIron ADX uses relative percentages in order to achieve 100% total weight distribution.
ServerIron ADX Global Server Load Balancing Guide | 211 |
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