Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Cisco Time based Traffic Shaping

Posted on 2011-03-14
4
1,357 Views
Last Modified: 2012-08-14
We have a server in head office that sends out updates to remote office servers regularly. When this happens it can slow down the connections between offices by utilizing most of the bandwidth. I want to throttle the bandwidth that travels over our WAN links and implement a time scheule so that after hours it can use more bandwidth. We only have T1 connections to remote offices so the bandwidth isnt that huge. This is what I have now and it is effectively shaping the traffic but I want to add some time rules for it.

interface FastEthernet0/0
 ip address 192.168.4.21 255.255.252.0

interface FastEthernet0/1
  ip address 172.17.1.6 255.255.255.252
  traffic-shape group 102 395264 49408 49408 1000

access-list 102 permit ip host 192.168.5.2 any
access-list 102 permit ip any host 192.168.5.2
0
Comment
Question by:damte
  • 2
4 Comments
 
LVL 17

Accepted Solution

by:
rochey2009 earned 250 total points
ID: 35133292
Hi,

Try the following:

Create a time range.

time-range shape-server
 periodic weekdays 8:00 to 18:00

replace your access-list with:

access-list 102 permit ip host 192.168.5.2 any time-range shape-server
access-list 102 permit ip any host 192.168.5.2 time-range shape-server
0
 

Assisted Solution

by:voyager2ie
voyager2ie earned 250 total points
ID: 35133505
While you can continue to use Generic Traffic Shaping to achieve the desired result, using CBWFQ is much more scalable and will allow you to do a lot more.

Use the following configurations to enable time-based traffic shaping:

---Define the time ranges (use your own values here)---
time-range DAY
 periodic daily 8:00 to 20:00
!
time-range NIGHT
 periodic weekdays 20:01 to 7:59
 periodic weekend 0:00 to 23:59
 
---Configure ACLs to specify interesting traffic and call the time ranges---

 ip access-list extended police-updates-daytime
  permit ip host 192.168.5.2 any time-range DAY
 ip access-list extended police-updates-nighttime
  permit ip host 192.168.5.2 any time-range NIGHT
 
 ---Configure class-map statements which call the ACLs---

 class-map match-all police-updates-daytime
   description Police updates to remote sites between 8am to 8pm
   match access-group name police-updates-daytime
 class-map match-all police-updates-nighttime
   description Police updates to remote sites between 8pm to 8am and weekends
   match access-group name police-updates-nighttime
 !
 
---Configure the main policy-map which calls the two class-maps and enforces the max BW for the server during the time ranges (again, use your own BW values...I set 200Kbps max during the day and full 1.544 at night/weekends)---

 policy-map Police-Update-Traffic
  class police-updates-daytime
     police 200000
  class police-updates-nighttime
     police 1544000

Once this is in, you will need to bind this to your WAN interface:

int Fa0/1:
service-policy output Police-Update-Traffic

Using this method should allow you to easily tack other shaping needs on top...more config than what you have now, but much more flexible.

Hope this helps!
0
 

Author Comment

by:damte
ID: 35150100
Thank you for the responces. Both seemed to have working in my testing.

Voyager2ie, just one command that did not work for me was:
periodic weekdays 20:01 to 7:59
I had to separate those in 2 commands, I was not able to have an end time less that the start time. Fixed by
periodic weekdays 20:01 to 23:59
periodic weekdays 0:00 to 7:59
0
 

Expert Comment

by:voyager2ie
ID: 35162239
Good catch. I forgot about the change of day when there are multiple statements.
0

Featured Post

Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
Use of TCL script on Cisco devices:  - create file and merge it with running configuration to apply configuration changes
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question