I have a setup of 3 routers with 2 configured for HSRP and third is just collecting RIP advertisments from earlier two. What I see is third router gets RIP advertisements only from Secondary HSRP router and not from the primary. My RIP config is pretty simple with RIP v2 and network statements. Does anyone know how should I troubleshoot this? I cannot run debug on these routers as they are in live network.
How does the third router decide which advertisment to prefer , if it gets advertisments from both?