This indicates the specific IOS release.
Includes Cisco IOS Firewall, Intrusion Prevention System (IPS), and robust VPN support (IPsec, SSL VPN, and DMVPN). Voice and Unified Communications: c2800nm adventerprisek9 mz 152 1 link
Includes IPv6, complex routing protocols (BGP, OSPF, EIGRP), and advanced security. This indicates the specific IOS release
Network Engineer with 15+ years of experience in Cisco routing and switching, specializing in legacy-to-modern migrations and network security. Intrusion Prevention System (IPS)