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cisco交换机NAT功能支持汇总

网络地址转换(NAT,Network Address Translation)属于广域网(WAN)接入技术,是一种将私有(保留)地址转化为合法IP地址的转换技术,它被广泛应用于各种类型Internet接入方式和各种类型的网络中。

以下是在Cisco交换机上关于NAT特性的支持情况汇总,分为 Catalyst Platform (交换机平台) 和 Minimum Software Release (最小软件版本需求):

1.  Catalyst 6500/6000 - CatOS(Catalyst OS) with Cisco IOS® Software on MSFC(Multilayer Switch Feature Card)/MSFC2/MSFC3

All versions 均支持

2.  Catalyst 6000 - CatOS MSM(Multilayer Switch Module)

No support

3. Catalyst 6500/6000 - Cisco IOS system software

All versions 均支持

4. Catalyst 5500/5000  RSM(Remote Switch Module)

Cisco IOS Software Releases 11.2(P),11.3(T), 12.0, 12.0T, 12.1, 12.1T

5. Catalyst 5500/5000  RSFC(Router Switch Feature Card)

Cisco IOS Software Release 12.1

6. Catalyst 4500/4000 - CatOS (WS-X4232-L3)

No support/no plans

7. Catalyst 4500/4000 - Cisco IOS Software (Supervisor Engine II+/III/IV/V)

No support currently(Catalyst 4500/4000 series switches with Supervisor Engine III/IV support the Access Gateway Module (AGM) in Cisco IOS Software Release 12.1(13)EW or later. You need Cisco IOS Software Release 12.2.13T or later on the AGM module. NAT has support in the software switching path on the AGM module.)

4500/4000系列交换机可利用AGM模块实现NAT支持功能。

8. Catalyst 3750、Catalyst 3560、Catalyst 3550

No support

9. Catalyst 2970、Catalyst 2950/2955、Catalyst 2940、Catalyst 2900XL/3500XL、Catalyst 1900

Not applicable (no support for IP routing)

10. Catalyst 2948G-L3/4908G-L3、Catalyst 8500

No support/no plans

 

Note:

a. Software performs the NAT function on the Catalyst 6500/6000 with a Supervisor Engine 1/2 and MSFC/MSFC2. There is no support in the hardware path.

使用Supervisor Engine 1/2 and MSFC/MSFC2引擎的6500/6000系列交换机利用软件实现NAT功能。

b. The NAT function is performed in hardware for unicast packets on a Catalyst 6500 with Supervisor Engine 720 and MSFC3 when you run Cisco IOS Software Release 12.2(14)SX or later.

使用Supervisor Engine 720 and MSFC3引擎的6500系列交换机利用硬件实现NAT功能。