CISCO IOS FILE NAME ROUGH GUIDE A filename such as c3600-in-l.12.2-12.mz can be translated using the following ; The first characters in the above denote the platform Cisco 3600 The next characters denote the feature set such as ; (extract from full Cisco list) a b d j l n r u = = = = = = = = appn appletalk desktop enterprise IPX Novell IBM VLAN a2 = atm a3 = SNA switching c = communications servers etc f = FRAD i = ip k = (Kitchen Sink) old Enterprise l9 = long reach Ethernet o = firewall p = service provider s = source route t = telco v = voice y = (for small routers <2500) so the example above would be ip, novell/IPX The next characters are the version numbers followed by the code type ; f = flash z = zipped m = RAM bin = binary so the example above would be r = ROM l = locatable zipped and run from RAM NOTE larger platforms pre-fix the filename with a board identification when necessary 1800, 2800 & 3800 only support 12.3+ features (no support for legacy features) NEW NAMES Base category = Entry level images (e.g. IP-Base) Services = has additional telephony support, MPLS, netflow, FR etc (e.g. SP) Advanced = has security additions such as VPN, 3DES, IDS (e.g. Advanced IP) Enterprise = multi-protocol IBM, IPX,Apple … (e.g. Enterprise Base) TRAINS T for small – mid range routers (maintenance release every 14 weeks) S enterprise & service provider markets XR high-end optimized for very large providers, multiple processor & modular architecture