Are there any reasons why I couldn't/shouldn't go with a mix of single homed fabric extender with VPC and dual homed fabric extender with VPC on the same hardware. Specifically the same two 5Ks with some FEXs attached to both and some single homed?
From what I understand, Cisco is starting to change their "recommendation" regarding dual-homing FEX to two (or more) upstream 5K. You can run multiple uplinks to a single 5K and enable vPC. The so-called dual-homing is no longer recommended as not only will it cause issues with troubleshooting in the future but can open cases of network instability, such as "split brain".
For redundancy purpose, Cisco is recommending this way:
1. vPC your 5K;
2. Each FEX has multiple links towards the 5K in a vPC;
3. Servers have 2 (or more) NICS and each NICs go to different FEX.
Hi I have this primary configuration on the primary CSR Router in the HA
mode in same AZ but I am not seeing failover to secondary CSR I am
seeing on the backup router that the API call was successful. 10 10 Actv
success Thu Jun 9 18:13:50 2016 syslog app...
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