How to configure traffic shaping on cisco 1841 with 10Mbps connection

Posted on 2009-05-04
Medium Priority
Last Modified: 2012-05-06
I am trying to configure traffic shapping on a cisco 1841 router, which has 2 interfaces one facing the ISP equipment another one to our firewall. Our ISP informed us that they are policing our traffic and they can see a lot of packet drops on their switch because we havent configured shapping properly. We have a 10Mbps connection and i used the below command on the interface facing the ISP, please let me know if i am missing something.

interface FastEthernet0/0
 ip address xxx.xx.xx.xx
 ip tcp adjust-mss 1400
 speed 100
 traffic-shape rate 10485760 262144 262144 1000
 no cdp enable
Question by:LEGHelpdesk
LVL 32

Accepted Solution

harbor235 earned 750 total points
ID: 24308115

1) why have you lowered your MTU?

2) Your bit rate is set to 10.5 Mbps not 10Mbps
     Should be:
     traffic-shape rate 10000000 (burst sizes will be automatically tuned, no need to enter them)

harbor235 ;}


Author Comment

ID: 24311903
Hi Harbor,
The MTU size was in the config from my previous ISP, i took it off after you raised it.
I have changed the traffic-shape to what you suggested and raised a ticket with my ISP to check if they are still able to see packets dropping, i will have an answer from them  tomorrow.

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