This is the primary differentiator of the k9 designation. It allows the router to act as a secure gateway.
: Full dual-stack support for transition and routing in IPv6 environments. Why "M9" Matters In the Cisco lifecycle, a high rebuild number like c800universalk9mzspa1573m9bin exclusive
This image is primarily intended for the (e.g., 891, 892, 897, 898 models), but may also support other 800 series platforms like the 881, 886, 887, 888, depending on RAM and flash constraints. This is the primary differentiator of the k9 designation
: Specifies the "universal" feature set with "k9" cryptographic support, enabling strong encryption features required for VPNs and secure management. c800universalk9mzspa1573m9bin exclusive