The city's core VLAN numbering is exhausted, blocking new permit-system environments. Which traditional challenge does virtual networking address?
Select an answer to reveal the explanation.
Short Explanation
VLAN IDs are a scarce parking-permit series on the core. Overlays let many logical networks ride a simpler underlay instead of burning a new citywide VLAN for every permit-system test bed. That is how you stop VLAN sprawl without begging for ID 4095.
Full Explanation
Traditional data centers often allocate a unique core VLAN per environment, which hits scale limits—including the 12-bit VLAN ID space—and operational sprawl. NSX-T overlay segments provide logical Layer-2 networks that do not each consume a new core VLAN. Hardware firewall pairs and Horizon clones do not replenish VLAN IDs. The underlay still uses some VLANs, such as TEP, but tenant environments no longer map one-to-one onto core VLAN inventory.