Aruba ACSA case studies
Aruba ACSA · Put your knowledge to work in context.
The Aruba Certified Switching Associate (ACSA) is a foundational switching credential from HPE Aruba, aimed at network engineers who design, deploy, and troubleshoot Aruba wired switching in campus and branch environments. It sits at the entry-to-associate tier, above general networking fundamentals and below professional-level switching certifications, and it is typically the first Aruba-specific switching credential a candidate pursues. The Aruba ACSA case studies are 5 cases and about 2,673 words.
1Uplink Congestion After VLAN Consolidation
A two-building campus runs ArubaOS-CX 6300M switches at each IDF, uplinked to a 6400 core via two 10G DACs in an LACP port-channel. Users were spread across VLANs 10, 20, and 30, each with its own subnet and its own uplink trunk carrying all three VLANs tagged.
573 words, about 3 min2MSTP Region Mismatch After a Switch Swap
A distribution pair of ArubaOS-Switch 2930F units runs MSTP with region name "CAMPUS-A", revision 1, and instances 1 (VLANs 10-20) and 2 (VLANs 30-40). A failed access switch is replaced with a spare ArubaOS-CX 6100 configured by a junior engineer.
549 words, about 3 min3OSPF Adjacency Flapping Across a LAG
Two ArubaOS-CX 8320 core switches form an OSPF area 0 adjacency over a 2-member LAG (VLAN 99, /30 subnet). The LAG uses LACP active on both sides.
530 words, about 3 min4802.1X Deployment Breaks a Legacy Printer VLAN
A site rolls out 802.1X on ArubaOS-CX access switches. Employee ports use PEAP with a RADIUS server; authenticated users land in VLAN 100, unauthenticated in VLAN 999 (a captive-portal quarantine).
522 words, about 3 min5Routing Loop Between Static Routes and a Firewall
A branch has an ArubaOS-CX 6300 as its core router with SVIs for VLANs 10, 20, and 30. A firewall sits on a transit VLAN 99 (/30) and provides internet access and a site-to-site VPN to headquarters.
499 words, about 2 min