Question

An ACI administrator is deploying two new EPGs, each mapped to a different physical domain. EPG-Web uses a physical domain tied to VLAN Pool-A (dynamic allocation, blocks 100-200), and EPG-App uses a physical domain tied to VLAN Pool-B (static allocation, blocks 150-250). After the administrator statically binds EPG-App to a leaf port using VLAN 175, EPG-Web endpoints intermittently lose connectivity. What is the most likely root cause?

Accepted Answer

The overlapping encapsulation range between Pool-A and Pool-B allows the same VLAN to be programmed for both EPGs on the same leaf, causing an encapsulation conflict

Answer

Static VLAN pools cannot coexist with dynamic VLAN pools on the same leaf switch, so one pool is administratively disabled

Answer

A dynamic VLAN pool always takes precedence over a static pool, so EPG-App fails to program its VLAN and floods traffic to EPG-Web

Answer

Physical domains do not support static path bindings, so EPG-App must use a VMM domain to allocate VLAN 175 correctly