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Re: Meraki Hub DC-DC routing behaviour

by in Security & SD-WAN
‎Mar 25 2025 10:03 AM
‎Mar 25 2025 10:03 AM
The problem is that I have the traffic heavly AS prepended at the HQ via side B and additional prepend on side A won't make any change, just trying to see the options I have, so it seems hub to hub tunnel is not an option to consider, right? Yes the spoke via A works fine but I'm checking if we go via B it works or not. Thanks ... View more

Meraki Hub DC-DC routing behaviour

by in Security & SD-WAN
‎Mar 25 2025 6:02 AM
‎Mar 25 2025 6:02 AM
Hi, I'm studying this scenario for a possible implementation of One-Armed Concentrator mode - Datacenter Redundancy (DC-DC Failover) which I think is quite similar to (scenario 3) https://documentation.meraki.com/MX/Networks_and_Routing/Border_Gateway_Protocol_(BGP)#Scenario_3:_Datacenter_Redundancy_(DC-DC_Failover only adding the HQ as the internal network we want to reach from the spoke. Given the below diagram I think we will have an asymetric routing in case priority hub of the spoke = DC-B, because the return traffic will get preference via DC-A (primary DC) and traffic will get eventually blocked by the DC-A statefull firewall. My question is if there is someway to influence the Hub to Hub tunnel to be preferred (green arrow) with for example lower administrative distance to be preferred over eBGP or this is not possible to tune? Or any other thoughts? Thanks!       ... View more
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