06-02-2011 08:47 PM - edited 03-04-2019 12:36 PM
Hello,
I am trying to get ride of an old traffic management appliance and would like to replace it by a simple Cisco 3845.
The configuration is really simple:
Customers -- Router 3845 -- Internet
I want to be able to provide bundles to customer such 64kps garanteed/ 2mbps MIR (retail) and 2mbps garanteed no MIR (business).
I need also to specify to the router the total internet bandwitdh available (example: 20mbps symetrical).
Could you let me know if this configuration will work ? Should I worry about any performance issue if I start to have a lot of customers ?
ip access-list extended Cust1
permit ip any sub_Cust1
permit ip subCust1 any
ip access-list extended Cust2
permit ip any sub_Cust2
permit ip subCust2 any
class-map match-all Cust1
match access-group name Cust1
class-map match-all Cust2
match access-group name Cust2
policy-map parent
class class-default
bandwidth 20000 //total bandwidth available : 20mbps
service-policy customers
policy-map customers
class Cust1
shape peak 64000 6400 198400 !Retail customer CIR 64kbps MIR 2048kbps
class Cust2
shape average 2048000 !Business customer 2mbps dedicated
int gi0/0
service-policy output parent
int gi0/1
service-policy output parent
06-03-2011 04:27 AM
Hi,
Your configuration looks good to me and it will meet your objective.
shape peak 64000 6400 198400 --> This enables this type of customers to burst to 2Mbps in only during non-congestion periods. But, I am not sure whether it's recommended to have CIR as 64Kbps and MIR as 2Mbps as there will be drops and delays while turning from non-congestion to congestion periods before settling down to their contracted rates.
http://www.cisco.com/en/US/docs/ios/12_2t/qos/command/reference/qftcmd9.html#wp1077189
Regards...
-Ashok.
06-05-2011 09:07 PM
Hello ashok_boin,
Thank you for your answer,
Actually I dont want to commit on a bigger CIR because it is a retail connection. Should I turn the CIR to 0 and only work in best effort?
I would like to imitate the same behaviour of a home user dsl connection.
Best regards,
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