Cisco IOS and Platform

Here's something i came across:

Here's some quick rules of thumb:

IOS 12.2 -> No IPv6 support. IPv6 was introduced in IOS 12.2T, which was the beta-quality development branch that lead to 12.3
IOS 12.3 -> IP PLUS or ADVANCED IP SERVICES minimum, depending on platform
IOS 12.4 -> IP PLUS or ADVANCED IP SERVICES minimum, depending on platform
IOS 12.4T -> IP PLUS or ADVANCED IP SERVICES minimum, depending on platform. This is the beta-quality development branch that will become IOS 12.5. Jun 8 2010: IOS 12.5 was released as IOS 15 in Nov 2009. My guess is IOS 13 was skipped due to Triskaidekaphobia. Dunno why IOS 14 was skipped.
IOS 15 -> ADVANCED IP SERVICES minimum.



Cisco 830 series (831, 836, 837) ->
12.3: Not recommended for these models
12.4: IP/FW/PLUS 3DES (requires 48MB RAM and 12MB flash aka 48D/12F). Cisco says 64D/12F, my experience is that 48D/12F will work just fine
12.4T: IP/FW/PLUS 3DES (requires 64D/16F). You can get by with 12F on an 831 but not on an 837 (ADSL).
15: Not available for these models
Cisco 871, 876, 877, 878 ->
12.3: Not available for these models
12.4: Not available for these models
12.4T: ADVANCED IP SERVICES (requires 128D/28F)
15: ADVANCED IP SERVICES (Cisco says 192D/36F, but the image will fit in 28F)
Cisco 881, 888 ->
12.3: Not available for these models
12.4: Not available for these models
12.4T: ADVANCED IP SERVICES (requires 256D/128F)
15: ADVANCED IP SERVICES (requires 256D/128F)
Cisco 1710 ->
12.3: IP/FW/IDS PLUS IPSEC 3DES (requires 48D/16F)
12.4: IP/FW/IDS PLUS IPSEC 3DES (requires 64D/16F)
12.4T: Not available for this model
15: Not available for this model
Cisco 1720 & 1750 ->
12.3: IP/ADSL PLUS or IP/ADSL/FW/IDS PLUS IPSEC 3DES (requires 48D/16F)
12.4: Not available for these models
12.4T: Not available for these models
15: Not available for these models
Cisco 1711, 1712, 1721, 1751, 1760 ->
12.3: IP/ADSL PLUS (requires 48D/16F), IP PLUS (requires 64D/16F) or ADVANCED IP SERVICES (requires 96D/16F)
12.4: IP/ADSL PLUS (requires 64D/16F) or IP/ADSL/FW/IDS PLUS IPSEC 3DES (requires 64D/16F) or ADVANCED IP SERVICES (requires 96D/32F)
12.4T: IP/ADSL PLUS (requires 96D/16F) or IP/ADSL/FW/IDS PLUS IPSEC 3DES (requires 96D/32F) or ADVANCED IP SERVICES - Cisco says 160D/32F, will work in 128D/32F. ADVANCED IP SERVICES is not supported by Cisco on anything but a 1760.
15: Not available for these models
Cisco 1811 ->
12.3: Not available for this model
12.4: Not available for this model
12.4(15)T: ADVANCED IP SERVICES (requires 128D/32F)
12.4(20)T -> 15: ADVANCED IP SERVICES (Cisco says 256D/64F but 256D/32F will work)
Cisco 2600 platform (2610, 2611, 2620, 2621, 2650, 2651) ->
12.3: IP/FW/IDS PLUS IPSEC 3DES BASIC or IP PLUS BASIC W/O HD ANALOG/AIM ATM/VOICE or IP PLUS BASIC W/O SWITCHING (all require 64D/16F)
12.4: 2650 & 2651 only: ADVANCED IP SERVICES (requires 128D/32F). Use the 2600XM image. Not supported by Cisco.
12.4T: Not available for these models
15: Not available for these models
Cisco 2600XM platform (2610XM, 2611XM, 2620XM, 2621XM, 2650XM, 2651XM) ->
12.3: IP PLUS (requires 64D/32F), IP/FW/IDS PLUS IPSEC 3DES (requires 96D/32F) or ADVANCED IP SERVICES (requires 96D/32F)
12.4: ADVANCED IP SERVICES (requires 128D/32F)
12.4T: ADVANCED IP SERVICES (requires 192D/48F)
15: Not available for these models
Cisco 2691 ->
12.3: IP PLUS or IP/FW/IDS PLUS IPSEC 3DES or ADVANCED IP SERVICES (all require 128D/32F)
12.4: ADVANCED IP SERVICES (requires 128D/64F)
12.4T: ADVANCED IP SERVICES (requires 256D/64F)
15: Not available for this model
Cisco 3620 & 3640 ->
12.3: 3620 -> IP PLUS (requires 64D/32F) or IP/FW/IDS PLUS IPSEC 3DES BASIC NO ATM (requires 64D/32F)
3640 -> IP PLUS (requires 96D/32F) or IP/FW/IDS PLUS IPSEC 3DES (requires 128D/32F)
12.4: 3640 ONLY IP PLUS or IP/FW/IDS PLUS IPSEC 3DES (all require 128D/32F)
12.4T: Not available for these models
15: Not available for these models
Cisco 3660 ->
12.3: IP PLUS or IP/FW/IDS PLUS IPSEC 3DES (all require 96D/32F)
12.4: IP PLUS (requires 128D/32F) or IP/FW/IDS PLUS IPSEC 3DES (requires 128D/64F)
12.4T: IP PLUS (requires 128D/64F) or IP/FW/IDS PLUS IPSEC 3DES (requires 256D/64F)
15: Not available for these models
Cisco 3700 platform (3725, 3745) ->
12.3: IP PLUS or IP/FW/IDS PLUS or ADVANCED IP SERVICES (all require 128D/32F)
12.4: ADVANCED IP SERVICES (requires 128D/64F)
12.4T: ADVANCED IP SERVICES (requires 256D/64F)
15: Not available for these models




http://www.tunnelbroker.net/forums/index.php?topic=278.0

The following are similar in horsepower: 1800 series, 265xXM, 2691, 3640. The 3725 is easily 3 or 4 times more powerful and is still the best bang for your buck

If you contact a reputable vendor they may be willing to sell you a damaged unit (bent chassis, broken faceplate, bad port, bad expansion slot, etc) at a discount.

Don't confuse a 2600 with a 2600XM! The 2600XM platform uses the same software images as the 2600 platform but takes more RAM and flash. In my eyes they are far more desirable for an IPv6 router & firewall.

I found this part out the hard way: If you are considering purchasing a wireless-equipped 870 series or 880 series (the 871W, 876W, 877W, 878W, 881W or 888W), be warned that IPv6 support does not always work! The feature Cisco uses to bridge the WLAN and LAN interfaces is called IRB (integrated routing and bridging); IPv6 does not work on the BVIs (bridge virtual interface), and the 802.11 interfaces don't support IPv6! As someone else mentioned, IPv6 will work on the wireless models if you configure IPv6 on the physical interfaces (ie Vlan 1 and Dot11Radio 0) rather than the BVI. It's not the same but it will have to do until Cisco gets off their arse and fixes it.