If your ASA has removable modules (like a 4-port Gigabit Ethernet module or a SSP (Scalable Security Processor)), show inventory lists the serial number for every component. This is vital because if the main board fails, you may need the sub-module serials for RMA.
Hardware: ASA5516, 4096 MB RAM, CPU Lynnfield 2800 MHz, 1 Core (4 logical) BIOS Flash Firmware @ 0xffe00000, 8192KB ... Serial Number: JMX2048X123 Running Permanent Activation Key: 0x12345678 ... cisco asa serial number command
For the vast majority of physical Cisco ASA appliances—such as the 5506-X, 5516-X, 5525-X, and the older 5505/5510 series—the most direct command is show inventory . If your ASA has removable modules (like a
: This is the "parent" serial number required for opening technical support (TAC) cases or checking SmartNet contract status. Identification : These numbers typically begin with "JMX" . Identification : These numbers typically begin with "JMX"
Use this SN for Software Licensing (e.g., AnyConnect, Security Plus, or encryption keys). Licensing portals and Cisco Software Central often require this specific number to generate activation keys. Command: show version (or its shortcut sh ver ) Comparison Table: show inventory vs. show version show inventory show version Component Physical Chassis Internal PCB (Motherboard) Common Prefix Often starts with JMX Often starts with JAD Primary Purpose SmartNet, Support, RMA Feature Activation, Licenses Physical Match Matches the sticker on the unit Rarely matches the outer sticker Alternative & Specialized Commands ASA 5506 Serial Numbers - Cisco Community