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Cisco IOS software releases 12.0 and 11.3 are packaged in "feature sets" (also called "software images"). There are many different feature sets available, and each feature set contains a specific subset of Cisco IOS features. Not all feature sets are available on all platforms. Also, some feature sets support different features when run on different platforms.
Feature Sets are categorized as follows:
Basic: the basic feature set for the hardware platform
Plus: the basic feature set plus additional features depending on the hardware platform selected
Encryption: the addition of 40-bit (Plus 40) or 56-bit (Plus 56) data encryption feature sets to either a basic or plus feature set
In Cisco IOS software releases 11.2 and 11.2P, full NAT functionality, including Port Address Translation (PAT), a subset of full NAT functionality, is available only in "Plus" images.
In Cisco IOS software releases 11.3 and 11.3T, PAT is available in all base images on selected platforms. Customers requiring only PAT functionality need not purchase a "Plus" image. Only customers requiring full NAT functionality need to purchase a "Plus" image.
Beginning with Cisco IOS software release 12.0, complete Cisco IOS NAT functionality, including Port Address Translation (PAT), is available in all software images for platforms that support Cisco IOS NAT at no extra charge. Although all "Plus" images will continue to deliver full NAT functionality (as well as other value-add services), customers are not required to purchase "Plus" images in order to obtain full NAT functionality.
Also, beginning with release 12.0, customers need not purchase a NAT Feature License for Cisco RSP7000, 7200, and 7500 platforms in order to use NAT functionality.
Beginning with Cisco IOS software releases 11.2(13)P, 11.3(3)T, 12.0(1), and 12.0(1)T, full NAT functionality is included in all 1600 and 2500 Cisco IOS Firewall images.
NAT support for H.323 traffic is supported in releases 12.0 and 12.0T only in Enterprise images on Cisco 2500, 2600, 3620, 3640, 4000, 4500, 4700, AS5200, AS5300, Cat5000 RSM, 7200, RSP7000, and 7500 platforms.
See the following table for details:
|
Cisco IOS software release |
NAT Support in Base images |
NAT Support in "Plus" images |
Easy IP Support |
Hardware Platforms Supported |
|---|---|---|---|---|
|
11.2 |
None |
Full NAT |
None |
CIsco 1000, 2500, 4000, 4500, 4700, AS5200, 7200, RSP7000, 7500 |
|
11.2P |
None |
Full NAT |
None |
Cisco 1000, 1600, 2500, 3620, 3640, 4000, 4500, 4700, AS5200, AS5300, Cat5000 RSM, 7200, RSP7000, 7500 |
|
11.3 |
PAT only |
Full NAT |
Phase 1 |
Cisco 1000, 1600, 2500, 3620, 3640, 4000, 4500, 4700, AS5200, 7200, RSP7000, 7500 |
|
11.3T |
PAT only |
Full NAT |
Phase 1 |
Cisco1000, 1600, 2500, 2600, 3620, 3640, 4000, 4500, 4700, AS5200, AS5300, Cat5000 RSM, 7200, RSP7000, 7500 |
|
12.0 |
Full NAT |
Full NAT |
Phase 1 |
Cisco 1000, 1600, 2500, 2600, 3620, 3640, 4000, 4500, 4700, AS5200, AS5300, Cat5000 RSM, 7200, RSP7000, 7500 |
|
12.0T |
Full NAT |
Full NAT |
Phase 2 |
Cisco1000, 1600, 2500, 2600, 3620, 3640, 4000, 4500, 4700, AS5200, AS5300, Cat5000 RSM, 7200, RSP7000, 7500 |
Definitions:
None: NAT/Easy IP is not supported in these Cisco IOS software images for this release.
PAT Only: only PAT (Port Address Translations: "many-to-one" translations), a subset of full NAT functionality, is supported. Static and dynamic one-to-one translations are not supported in these Cisco IOS software images for this release
Full NAT: full NAT functionality, including static, dynamic one-to-one translations, and PAT, is supported in these Cisco IOS software images for this release
Easy IP Phase 1: includes PAT Only or Full NAT and PPP/IPCP WAN interface address negotiation functionality
Easy IP Phase 2: includes PAT Only or Full NAT, PPP/IPCP WAN interface address negotiation functionality, and Cisco IOS DHCP Server functionality