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Cisco Router Suggestion - QoS

Experts,

Good afternoon, I will be setting up an office with 2 ISP Links (20Mb each - 1 primary and the other one secondary) and 2 Lan network segments.
It is very important that I can assign 2Mbps on one Lan segment and 18 Mbps on the other.
I also need a K9 image for VPN.

What Cisco Router do you recommend to easily manipulate the Bandwidth?

Thank you
0
RandallVillalobos
Asked:
RandallVillalobos
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1 Solution
 
mat1458Commented:
The IOS operating system on most routers allows you easily to configure that. With MQC you can set up policies that separate the traffic the way you want by looking at the source address of both LAN. The router type depends a bit of the technology (DSL, Ehternet, other) that you have towards the ISP. You might look at ISR 1900, 2900 or 3900 routers.

You can decide to set hard limits or to allow to go over the 2/18 Mbps in case that the other LAN does not use it's bandwidth.
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RandallVillalobosAuthor Commented:
Mat,

Thanks for your reply.  It will be Ethernet.
Can you please guide me on some documentation of the MQC (completely new to me)?  Looks like the source address strategy is the winner.


I will check out those routers.

Thank you
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mat1458Commented:
It's all the IOS Quality of Service documentation but as cisco has changed the documentation I cannot really direct you to a page that would help you doing that. Look for CBWFQ (Class based weighted fair queuing) or policing if you want to have it more accurately.

You can have a look at this example to get an idea how it works: http://www.cisco-faq.com/212/configuring_cbwfq.html.

Basically you define ACLs to specifiy what traffic you are interested in (your two LAN IP address ranges, each in a separate ACL

Then you define two class-maps in which you match the ACL.

Next step is to define a policy-map in which you assign 18 mbps bandwith to one class-map and 2 mbps to the other.

Finally you use the service-policy output command to assign it to the ethernet interfaces towards the service providers.

If you need to have it more accurate let me know a bit more about your IP addressing (maybe NAT if you intend to do that).
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RandallVillalobosAuthor Commented:
Wow, thanks a lot.  I would need NAT, my two address ranges internally

Lan 1 - 192.168.10.x /24  - 18Mbps
Lan 2 - 192.168.77.x /24 - 2 Mbps

Lan1 needs Nat to ip 200.1.1.10
Lan 2 needs Nat to ip 200.1.1.11

Thank you for all the help!
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mat1458Commented:
With the assumption that your router first uses NAT and then QoS (http://informationsecuritytips.com/2010/04/order-of-operations-in-cisco-qos/) this might be a possible configuration:

ip access-list standard ACL_LAN1
 permit host 200.1.1.10
!
ip access-list standard ACL_LAN2
 permit host 200.1.1.11
!
class-map CLM_LAN1
 match access-group name ACL_LAN1
!
class-map CLM_LAN2
 match access-group name ACL_LAN2
!
policy-map POM_ToISP
 class CLM_LAN1
  bandwidth 18000
 class CLM_LAN2
  bandwidth 2000
!
interface f1/0
 description ISP1
 service-policy output POM_ToISP
!
interface f1/1
 description ISP2
 service-policy output POM_ToISP
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