123ArticleOnline Logo
Welcome to 123ArticleOnline.com!

ALL >> Web-Design >> View Article

Traffic Policing On 3750 Switch

By Author: Lili router
Total Articles: 4

We have a Cisco 3750 WS-C3750V2-48TS-S WS-C3750V2-48TS-S
switch and an ASA. The ASA has 100Mbps bandwidth from ISP and it has two ports connected to the switch (inside and outside). 100 users are behind this ASA to access internet. What we want to achieve is to throttle the download rate for these 100 users to 70Mbps and retain the rest of the 30Mbps for other services.

Ideally I should do the traffic shaping/policing on the switch for the outside interface outbound direction. But according to Cisco article, 3750 series only allows to do the traffic shaping/policing on the inbound traffic not outbound. My question is:

If I do the traffic shaping/polcing on the switch for inside interface ingress direction, will it also work?

Litterally it shouldn't work because it only restrict the rate between users (LAN) and the ASA inside interface. However, does TCP protocol know how to adjust the rate to avoid too much packets being dropped before it goes to the inside interface? So the rate between ISP and the ASA outside can also be shaped? It's something related to TCP congestion theory I think. Anyone ever tested this in your environment or do you have other suggestions?

My configs:

access-list 101 permit ip any any

class-map match-any RSP_ASA_Class
match access-group 101

policy-map RSP_ASA
class RSP_ASA_Class
police 70000000 1000000 exceed-action drop

interface GigabitEthernet2/0/11
description ASA-INSIDE
service-policy input RSP_ASA

The policy will throttle the traffic by dropping packets that violate it. TCP is designed to account for packet loss though, so it will retransmit. The combination effectively limits speeds when shaping isn't an option. It's standard practice when dealing with incoming traffic.

Shaping is better than policing, but can only be done outbound. It gives the device the option of queuing packets rather than just dropping them like policing does. The ASA can do it, but not selectively.

It doesn't look like shaping WS-C3750V2-24TS-S WS-C3750V2-24TS-S is going to be an option here, so falling back on policing and relying on TCP's retransmission mechanism will work well.

Total Views: 87Word Count: 328See All articles From Author

Web Design Articles

1. 7 Reasons You Should Upgrade Your Private Company Site In Wordpress
Author: Infocampus logics pvt ltd

2. Employment Opportunity Of The Graphics Specialists In Modern Times
Author: Eric Brunner

3. Get Knowledge About The Role Of Websites In The Latest Marketing Trend
Author: Eric Brunner

4. Know About Various Ways Of Creating A Website For Meeting Business Needs
Author: Eric Brunner

5. Tips To Find Cost Effective Ways For Developing A Better Business Website
Author: Eric Brunner

6. Effective Way To Expand Your Business Worldwide By Using The Internet
Author: Eric Brunner

7. Tips To Choose The Best Web Design Company In Parramatta
Author: Chris Hekeik

8. Design Your Brand’s Web Page At The Affordable Cost
Author: Owen Thomson

9. 5 Things You Can Do To Assist Your Website Specialist With Giving You A Fabulous Site
Author: Infocampus logics pvt ltd

10. Why Is A Web Design Important ?
Author: mohit

11. Latest Trends On Web Designing Technologies-2017
Author: Hemant Jadhav

12. Mvm Shop - Builds Robust And Dynamic Online Store For Small, Medium And Large Scale Companies
Author: MVM Infotech

13. Unique Things You Can Do With Woocommerce Extensions
Author: Woomill Darrel Wilson

14. Boost Your Business Sales Through Good Quality Website Design
Author: Sam Web Studio

15. Importance Of Website Designing And Development
Author: Vishal Kumar

Login To Account
Login Email:
Password:
Forgot Password?
New User?
Sign Up Newsletter
Email Address: