We had a Cisco stacked 3750 as our core/distribution in a collapsed model and we replace it wit 2 Cisco Nexus with vPC/HSRP/OSPF/static ip route summarization taking over the core/distribution role and also hosting our ESXi and SAN. However we never move our WAN/VPN and internet edge routers backbone connection to the new Nexus core/distribution switch. Our edge WAN/VPN internet routers consist of Cisco, Vyos (on DECISO hardware) and UBNT Edge Router Pro.
Recently we had power issue with the primary device in the stacked Cisco 3750 and we loose connection to some device connected directly to it. So to eliminate single point of failure I want to move the backbone connections of all our edge WAN/VPN internet routers to the Nexus and have redundant backbone connection distributed to the two Nexus with VRRP and HSRP configured on the edge WAN/VPN internet routers
What other advantages will I gain from this and is there any disadvantage of aggregating the WAN to the core/distribution ?
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