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Greetings, i have a customer running a single DMVPN cloud connecting 5 business sites, one of sites is the DMVPN hub and the others are spokes.
The customer has recently asked is we can add link/hardware redundancy for both the hub site and one of the spoke sites which is populated with IP phones that hang off the hub site.
These solutions are detailed in the attached diagrams (Current and Proposed)
My current train of though is to add a second Router and DSL link to each of these sites and create a dual hub, single cloud design however im currently tied over which redundancy protocol to use, HSRP or GLBP to provide failover between routers in the event of hardware failure or link loss.
To make things more complicated voice traffic should only traverse one link to avoid asymmetric routing but be able to failover to the second router in the event of a hardware or link failure.
Can i ask what you guys would recommend, MHSRP w/PBR? GLBP w/PBR?
I should point out that the existing DMVPN works just fine and is running EIGRP.
Any help would be much appreciated.