Cisco Cat 4K/6K Advanced Security Subscription — 1 Year | Catalyst, Security, 1-Year — C1S1-1Y-CAT4K6KS2

Harden access and distribution layer switches by applying an Advanced Security Subscription tailored for Catalyst 4K and 6K platforms. The one-year subscription (MPN C1S1-1Y-CAT4K6KS2) bundles ongoing signature updates, threat intelligence feeds, and policy enforcement capabilities that reduce exposure to network threats without replacing hardware. Designed for infrastructure teams managing large switch estates, the subscription preserves operational continuity through coordinated security updates and centralized policy application. Use it to align switch-level protections with firewall and endpoint controls, accelerate incident response with vendor-supplied intelligence, and simplify renewals through a single-line subscription SKU. For teams weighing cost versus coverage, this subscription justifies premium spend by converting static switch firmware into a continuously updated security posture, reducing maintenance overhead and compressing risk across thousands of ports. Ideal For Apply continuous threat protections to edge Catalyst 4K switches Standardize security policy on distribution Catalyst 6K switches Extend lifecycle security to hardware without forklift upgrades Manage renewals and security updates across multi-site networks Why This Product 1 Delivers continuous threat updates to switches versus one-off firmware fixes 2 Targets Catalyst 4K/6K platforms specifically for compatibility 3 Simplifies renewals with a single subscription SKU per device 4 Converts hardware into a continuously updated security control point