I am studying for CCNA and the book I am using states that
Once configured, the two routers negotiate as to which will be the AVG. As with HSRP, if both come up at the same time, R1 will win, with a priority set to 110 with the
glbp 1 priority 110command versus R2’s default priority of 100. However, if either router comes up before the other, that router goes ahead and takes on the AVG role.
Is this similar to the case that if an OSPF router's RID is changed, it will only take effect after the OSPF process is restarted?
Other GLBP configured routers discover the AVG through hello messages and I assume that the selected AVG's ID will circulate in the Hellos regardless of the GLBP priority of any new routers that just came online.
None of the other sources corroborate this theory and only mention the priority but they do not deny it either.