05-09-2022 01:19 AM
Hello Folks,
From ISR 4K Series Data Sheet ISR 4331 with boost license's throughput is over 2Gbps.
4431 boost lic throughput is over 4Gbps.
Well, 4331 should not able to hit 4Gbps, right? So what is "OVER 2Gbps" ?
I can not find in any other cisco documentation about the fix maximum limit for 4331 throughput.
How about 2.5Gbps aggregate traffic acrose all of the egress traffic? can 4331 handle it?
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 |
Solved! Go to Solution.
05-09-2022 07:56 AM
A boost license removes the license performance cap, so you can obtain whatever performance the router can provide running at 100% CPU. What can be achieved at full 100% CPU load very much depends on your configuration and your traffic.
I've attached an earlier Cisco whitepaper on pre-4K ISRs performance. What to take note of, is how much CPU loading, and maximum throughput, varies, based on router config and traffic mix. When you uncap/boost a 4K, you'll likely see similar relative results.
So, the "over 2Gbps" likely means simple forwarding of max MTU Ethernet frames. (Take note of performance numbers in Table 1, where even a 1921 can have "over 2Gbps" throughput.)
You might also want to view https://miercom.com/pdf/reports/20150817.pdf stats on the 4331, page 12, and look at percent of CPU loading for various configurations. I.e. @300 Mbps, lots of unused CPU capacity for just IPv4 forwarding, but CPU pretty much fully utilized for FW, NAT, QoS and IPSec.
If this is still unclear, let me know.
05-09-2022 06:38 AM
Max 1GB for that model if you looking 2.5G then you need to uplift the model to 4461
05-09-2022 07:56 AM
A boost license removes the license performance cap, so you can obtain whatever performance the router can provide running at 100% CPU. What can be achieved at full 100% CPU load very much depends on your configuration and your traffic.
I've attached an earlier Cisco whitepaper on pre-4K ISRs performance. What to take note of, is how much CPU loading, and maximum throughput, varies, based on router config and traffic mix. When you uncap/boost a 4K, you'll likely see similar relative results.
So, the "over 2Gbps" likely means simple forwarding of max MTU Ethernet frames. (Take note of performance numbers in Table 1, where even a 1921 can have "over 2Gbps" throughput.)
You might also want to view https://miercom.com/pdf/reports/20150817.pdf stats on the 4331, page 12, and look at percent of CPU loading for various configurations. I.e. @300 Mbps, lots of unused CPU capacity for just IPv4 forwarding, but CPU pretty much fully utilized for FW, NAT, QoS and IPSec.
If this is still unclear, let me know.
05-09-2022 06:51 PM - edited 05-09-2022 06:58 PM
You right Joseph. Thanks for help clearing this over throughput.
I found CPU load test with boost license. On aggregate CEF, 4331 can handle 2Gbps with 53% CPU and will increase along with configured feature like netflow, ipsec, etc.
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2019/pdf/PSOCOL-2009.pdf
On Slide 42
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 |
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