We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now

x

Traffic shaping/QOS on a 2651

James
James asked
on
Medium Priority
510 Views
Last Modified: 2008-03-17
Traffic shaping/QOS on a 2651

I have a single T-1 from our Corp. office to our datacenter.  With about 7 users in the corp office.  Occasionally.. one of us needs to do large down loads or run network intensive applications & it brings everyone to their knees.

Is there an easy way to configure traffic shaping oun our 2651 to limit the maximum bandwidth a singe user can grab?  Say.. burst for 30 seconds then user the max size.  I found the below on Cisco website, but not sure if it would help us.

If you need to restrict the amount of load the system can induce both outbound and inbound, and therefore the total load the system can induce, configure traffic shaping on both the inbound and outbound interfaces, as in the following example:
interface <serial interface or sub-interface>
 traffic-shape rate 64000 8000 46320000
interface <LAN interface>
 traffic-shape rate 64000 8000 46320000

Any suggestions would be very appreciated.

Thanks - James
Comment
Watch Question

Generic traffic shaping will also let you limit traffic for certain IPs or subnets via ACLs. eg:
  Always limit traffic to/from these IPs - 10.1.1.5 & 10.1.1.6 to 384 kbps, while all others are unlimited:

access-list 100 permit host 10.1.1.5 any
access-list 100 permit host 10.1.1.6 any
access-list 100 permit any host 10.1.1.5
access-list 100 permit any host 10.1.1.6

int <LAN interface>
 traffic-shape group 100 384000

And since you're using extended ACLs above, it gives you flexibility so you could limit an entire subnet, just limit TCP traffic, etc.

cheers

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
So,

If I wanted to do it by subnet:

access-list 100 permit host 10.0.2.0 0.0.0.255 any
access-list 100 permit 10.0.2.0 0.0.0.255 any

int <LAN interface>
traffice-shape group 100 38400

Would this limit only active connections?

Thanks... James
All connections, not just active ones.
  The second you apply traffic-shaping to the interface, any in-progress connections (or new ones) will be affected, as long as the traffic matches the ACL.  Start a large download/upload on a host, then apply shaping to the interface, & watch the throughput spiral downwards until it conforms to the max allowed rate.

cheers
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.