ISR大致可以分几类：
Cisco 860、880、890
ISR1800 (fixed)、1800 (modular)、2800、3800 Series
ISR1900、2900、3800、3900 Series
ISR4K
每一代的设备，设备的性能肯定都不一样，本摘要，将主要记录ISR的吞吐性能问题。
1、下图主要体现的是800 Series和1900、2900、3900 Series，厂商建议的WAN最大throughput，该建议应适合大多数企业和商业客户：
Table 2. Cisco ISR G2 key benfits over the ISR G1
该参数，基本也可以从Datasheet中查询得到，如1900和2900：
Table 1. Key Features and Benefits of the Cisco 1921 Integrated Services Router
|
High performance with integrated services |
● The Cisco 1900 Series enables deployment in high-speed WAN environments with concurrent services enabled up to 15 Mbps.
|
Table 1. Key Features and Benefits of the Cisco 1941 Integrated Services Router Series
|
High Performance with Integrated Services |
● The Cisco 1900 Series enables deployment in high speed WAN environments with concurrent services enabled up to 25 Mbps.
● Multi-Gigabit Fabric enables high bandwidth module to module communication without compromising routing performance.
|
Table 1. Key Business Benefits of the Cisco 2900 Series Integrated Services Routers
|
High Performance with Integrated Services |
● The Cisco 2900 Series enables deployment in high speed WAN environments with concurrent services enabled up to 75 Mbps.
● A MultigiGabit Fabric (MGF) enables high-bandwidth module-to-module communication without compromising routing performance.
|
2、下图主要针对ISR4K的WAN throughput：
三种性能级别：
| Platform | Factory Default | Performance License | Boost License |
| 4451 | 1Gbps | 2 Gbps @ 19% CPU | 4 Gbps* @ 35% CPU |
| 4431 | 500Mbps | 1 Gbps @ 18% CPU | 4 Gbps* @ 62% CPU |
| 4351 | 200Mbps | 400 Mbps @ 17% CPU | 2 Gbps* @ 45% CPU |
| 4331 | 100Mbps | 300 Mbps @ 16% CPU | 2 Gbps* @ 53% CPU |
| 4321 | 50Mbps | 100 Mbps @ 8% CPU | 2 Gbps* @ 68% CPU |
| 4221 | 35Mbps | 75 Mbps @ 8% CPU | 1.4 Gbps @ 94% CPU |
Datasheet中也有记录：
Table 4. Specifications of Cisco 4000 Family Integrated Services Routers
|
Technical Specifications |
Cisco 4461 |
Cisco 4451 |
Cisco 4431 |
Cisco 4351 |
Cisco 4331 |
Cisco 4321 |
Cisco 4221 |
|
Aggregate Throughput (Default) |
1.5Gbps |
1 Gbps |
500 Mbps |
200 Mbps |
100 Mbps |
50 Mbps |
35Mbps |
|
Aggregate Throughput (Performance License) |
3Gbps |
2 Gbps |
1 Gbps |
400 Mbps |
300 Mbps |
100 Mbps |
75 Mbps |
|
Aggregate CEF Only[5] Throughput (Boost License) |
Over 7Gbps |
Over 4Gbps |
Over 4Gbps |
Over 2Gbps |
Over 2Gbps |
1.5Gbps |
1.2Gbps |
如果需要提升throughput，对license的需求如下：
Table 6. Cisco ISR 4000 Performance Licenses
|
Platform |
Performance-on-Demand License |
Features |
|
ISR4461 |
FL-4460-PERF-K9 |
Increases the performance from base performance 1.5 Gbps to 3 Gbps |
|
ISR4451 |
FL-44-PERF-K9 |
Increases the performance from base performance 1 Gbps to 2 Gbps |
|
ISR4431 |
FL-44-PERF-K9 |
Increases the performance from base performance 500 Mbps to 1 Gbps |
|
ISR4351 |
FL-4350-PERF-K9 |
Increases the performance from base performance 200 Mbps to 400 Mbps |
|
ISR4331 |
FL-4330-PERF-K9 |
Increases the performance from base performance 100 Mbps to 300 Mbps |
|
ISR4321 |
FL-4320-PERF-K9 |
Increases the performance from base performance 50 Mbps to 100 Mbps |
|
ISR4221 |
FL-4220-PERF-K9 |
Increases the performance from base performance 35 Mbps to 75 Mbps |
Table 7. Cisco ISR 4000 Booster (boost) Performance Licenses
|
Part number |
Description |
|
FL-4220-BOOST-K9 (=) |
Booster Performance License for 4220 Series Router |
|
FL-4320-BOOST-K9 (=) |
Booster Performance License for 4320 Series Router |
|
FL-4330-BOOST-K9 (=) |
Booster Performance License for 4330 Series Router |
|
FL-4350-BOOST-K9 (=) |
Booster Performance License for 4350 Series Router |
|
FL-4430-BOOST-K9 (=) |
Booster Performance License for 4430 Series Router |
|
FL-44-BOOST-K9 (=) |
Booster Performance License for 4450 Series Router |
|
FL-4460-BOOST-K9 (=) |
Booster Performance License for 4460 Series Router |