Difference between revisions of "How to calculate the MS NLB multicast mac address from a unicast IP address"
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If using Microsoft Network Load Balacning (NLB) set-up in multicast mode you can calculate the multicast mac address from the unicast NLP cluser IP address as follows: | If using Microsoft Network Load Balacning (NLB) set-up in multicast mode you can calculate the multicast mac address from the unicast NLP cluser IP address as follows: | ||
Revision as of 03:50, 8 August 2016
If using Microsoft Network Load Balacning (NLB) set-up in multicast mode you can calculate the multicast mac address from the unicast NLP cluser IP address as follows:
Convert each octet of the unicast IP to Hexadecimal, the multicast mac is 03-bf-WW-XX-YY-ZZ. e.g. IP 199.99.20.70 Convert to Hex:
| Decimal | Hex |
|---|---|
| 199 | c7 |
| 99 | 63 |
| 20 | 14 |
| 70 | 46 |
The multicast mac address would then be:
03-bf-c7-63-14-46