Irf Merge; Member Priority; Master Election - HP FlexFabric 12900 Series Configuration Manual

Figure 4 IRF split

IRF merge

IRF merge occurs when two split IRF fabrics reunite or when two independent IRF fabrics are united, as
shown in Figure
Figure 5 IRF merge

Member priority

Member priority determines the possibility of a member device to be elected the master. A member with
higher priority is more likely to be elected the master.

Master election

Master election occurs each time the IRF fabric topology changes in the following situations:
The IRF fabric is established.
•
• The master device fails or is removed.
The IRF fabric splits.
•
Independent IRF fabrics merge.
•
NOTE:
Master election does not occur when two split IRF fabrics merge.
Master election selects a master in descending order:
1. Current master, even if a new member has higher priority.
When an IRF fabric is being formed, all member devices consider themselves as the master. This
rule is skipped.
2. Member with higher priority.
3. Member with the longest system uptime.
5.
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