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In a scenario, there are three devices R_A, R_B, R_C and connected as shown in diagram, topology

How can implement that Link 1 and Link 2 work in active and standby mode i.e. Link 2 will be active if Link 1 get fail other Link 2 on standby where Link 3 active all time with use of auto cost single IGP process and vrrp at all devices.

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  • How does a layer-3 link relate to VRRP, which is a protocol for fooling devices connected at layer-2? Equal cost links will be load balanced. You may be able to do something with AD to keep the routes on one link at a higher AD than on the other. – Ron Maupin♦ Mar 4 '17 at 15:44
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    Did any answer help you? if so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you could provide and accept your own answer. – Ron Maupin♦ Aug 12 '17 at 17:49
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You could achieve this using ospf between R_A and R_B and give the link 1 lower metric

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