| Area | Limitation | | :--- | :--- | | | Maximum forwarding ~1M pps (far below a modern Catalyst 9300 at 100M+ pps). | | TCAM size | Only ~32,000 IPv4 routes (cannot hold full internet BGP table). | | PoE standards | Only 802.3af (15.4W per port). No 802.3at (PoE+) for newer access points. | | No RESTCONF/NETCONF | Automation requires legacy SNMP or Expect scripts. | | No M-LAG | Only StackWise (which is single point of failure for stack ring). | | End-of-Support | Cisco last supported 15.0(2)SE11 on the 3750 in 2017. No new security patches. |
If you meant you want to about that specific IOS image, please clarify, and I can help outline or draft content based on public Cisco documentation.
copy running-config tftp: show version (Note current IOS filename)