How a Legacy STP Domain Sabotaged an entire Cisco ACI Multi-Pod FabricThis week, I investigated a network incident for a customer that initially appeared to have an isolated, predictable impact. However, upon deeper analysis, it revealed a hidden, far more destructive iJun 19 · 4 min readdeepbuffer.hashnode.dev
OSPF: Why the "Shortest Path" Isn't Always the Best PathThis week, I was deep in a multi-area OSPF lab on Cisco NX-OS and stumbled onto a scenario that defies standard "Cost" logic. The lab setup: 4x Cisco N9K switches in different OSPF areas. ASBR R4: Injecting a default route (0.0.0.0/0), Type E1, Me...Feb 14 · 3 min readdeepbuffer.hashnode.dev
Achieving Seamless East–West Traffic Inspection with ACI Multi-PodRecently, I've worked on an architecture case that combined Cisco ACI Multi-Pod with advanced Palo Alto firewall clustering and high-availability requirements. In this article, I will try to explain that what makes this design particularly valuable i...Feb 8 · 3 min readdeepbuffer.hashnode.dev
Overcoming Host Routes Issues in ACI Multi-Site networksOver the past year, I’ve been studying and practicing data center networking, and this year I’ve decided to share some of those hands-on experiences along the journey. Recently, I’ve been focusing on Cisco ACI, particularly Multi-Site architectures.T...Jan 19 · 3 min readdeepbuffer.hashnode.dev
