06-02-2011 08:30 AM - edited 03-04-2019 12:35 PM
Hello,
I receive from my ISP 2M of bandwidth on interface f0, I need share this bandwitch four customer with CIR 1:4.
The goal is that the four customer have minimum guaranteed of 512k but if there are no traffic they can have more until 2M.
Someone have an idea, which mechanism put in place?
Thank
06-02-2011 09:46 AM
access-list 101 permit ip [customer_1] any
access-list 102 permit ip [customer_2] any
access-list 103 permit ip [customer_3] any
access-list 104 permit ip [customer_4] any
!
class-map customer_1
match access-group 101
class-map customer_2
match access-group 102
class-map customer_3
match access-group 103
class-map customer_4
match access-group 104
!
policy-map WAN_QOS
class customer_1
bandwidth percent 25
class customer_2
bandwidth percent 25
class customer_3
bandwidth percent 25
class customer_4
bandwidth percent 25
!
interface xxxxx
service-policy output WAN_QOS
06-02-2011 10:21 AM
Thank Edison for your answer.
Question with this conf, all customer have 25 percent of the bandwidth, but if there are bandwith not use, it will be redistributed to other clients ?
06-02-2011 10:39 AM
Hi,
Edison provided you a good solution. It's called congestion management. QOS will get involved when interface get congestion. However,you're using Fastethenet interface facing wan. It's hard to get this interface congestion. However,you can do it by using a shaping mechanism, including a child policy to manage queues.
For example
!
policy-map shape-customer class class-default shape average 2000000 service-policy WAN_QOS
!
HTH,
Toshi
06-02-2011 06:24 PM
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p.maillot wrote:
Thank Edison for your answer.
Question with this conf, all customer have 25 percent of the bandwidth, but if there are bandwith not use, it will be redistributed to other clients ?
Yes it will, although some IOS versions will complain if you allocate more than 75% bandwidth without making another parameter change. As long as all traffic falls within just the four classes, as long as the class weights are the same, each class will be guaranteed 25% of the bandwidth if they all want more. I.e., setting all four classes to 1% would accomplish the same goal, 1:1:1:1 ratios.
As Thotsaphon noted, since you also mentioned 2 Mbps cap, what he shows would be how to limit the aggregate traffic to 2 Mbps but you could also limit each customer to 2 Mbps too. I.e. you could guarantee both a minimum and maximum per customer. This isn't too useful unless your "selling" bandwidth guarantees.
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