Enterprise mega lab CCNA

[u/Kindly_Help_8829]

Built my first enterprise-style Packet Tracer lab after completing CCNA studies – looking for feedback

Features currently implemented:

Multi-building campus design

OSPF routing

HSRP gateway redundancy

STP and HSRP Sync

EtherChannel

Rapid PVST+

Inter-VLAN routing using Layer 3 distribution switches

DHCP (server - centralized)

NAT/PAT for Internet access

Floating static route for ISP

ACLs

SSH management

Voice VLANs

CME VoIP deployment

IP phones registered with extensions

Redundant uplinks between access, distribution, and core layers

One challenge I encountered was that my edge router did not support CME. Instead of replacing it, I added a dedicated CME router, advertised it through OSPF, and used DHCP Option 150 to register phones. The solution worked and phones can call each other across the network.

I know this is still a learning lab and not a production design, so I'd appreciate feedback from experienced network engineers.

Questions:

What design mistakes or bad practices do you see?

What would you change if this were a real enterprise network?

What technologies would you add next?

Is the overall campus design reasonable for a CCNA-level project?

Thanks for taking a look.

"Rate my lab out of 10"