Link Capability of Cisco 1841 Modular Router

Unanswered Question
Jul 18th, 2007

Hai,

i have got a 1841 modular router.my requirement is that I am planning to implement 3 E1 Link. Is this series router is capable for the above said link.

Regards

A.ChenthilKumar

I have this problem too.
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spremkumar Wed, 07/18/2007 - 03:09

Hi Chenthil

Cisco 1841 is capable of taking 3 E1 but make sure that you are not overloading the box by using IPSEC/QOS and other features..

What kinda links you are gonna have in the box ?

regds

ack_cisco Wed, 07/18/2007 - 03:36

hai prem,

Thanks first for the quick reply.The primary work with this Router is QOS. Bz I am planning to split the bandwidth for two seperate workouts.To be clear .. 2 mb leased link will be for Browsing area and other 4 mb leased link will be for upload and download as one my client has most of the works with FTP server hosted in US.

Here i have to split the bandwidth for two different work area..

i need you suggession..

Regards

A.ChenthilKumar

spremkumar Wed, 07/18/2007 - 03:42

Hi

Are you planning specific links for the mentioned purpose (like link 1 for browsing and link2,3 for upload/download) ?

If thats the case then you can make use of policy based routing in which you can match the packets destined to HTTP to flow through link 1 and the rest via the other 2 links.

Also are you taking these links from the same service provider ?

regds

ack_cisco Wed, 07/18/2007 - 04:04

dear prem,

Yes i am getting link from same service provider.

if possible ..give me hint in configuring policy map

waiting for your reply

Regards

A.ChenthilKumar

spremkumar Wed, 07/18/2007 - 04:19

Hi Chenthil

You need to create an access list permitting any any matching port http (80) traffic.

Do create a route map under which u bind this ACL using match command.

Once you are done with the same then set the next hop/gateway through which you want to forward your http traffic..

For all CLI info and assistance you can refer the below link.

http://www.cisco.com/en/US/docs/ios/12_0/qos/configuration/guide/qcpolicy.html#wp4785

regds

spremkumar Wed, 07/18/2007 - 04:48

Hi Chenthil

I was assuming its connecting on 3 different interfaces.

If its getting teriminating on a single ethernet interface then you can even make use of CIR(rate-limit) in conjunction with ACL created to match http traffic..

CAR is discussed over here..

http://cisco.com/en/US/docs/ios/12_0/qos/configuration/guide/qccar.html

The config which you have posted doesnt have proper ACL configured.

The ACLs configured are 111 and 112 under the class maps but you are having 101 and 102.

I feel you better go ahead with rate-limit on your interface which could help in achieving the requirement.

regds

spremkumar Wed, 07/18/2007 - 21:31

Hi

Can you try checking with the below access-list...

access-list 111 permit tcp any any eq 80

access-list 112 deny tcp any any eq 80

access-list 112 permit ip any any

regds

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