Bandwidth management

Unanswered Question
Sep 1st, 2009

Hi guys

I thought you might be able to help me with some advice. I have a link between two locations and 3 IPSEC Vpn tunnels on it. I would like to share the bandwidth between those tunnels (lets say tunnel group1 gets 20Mb, tunnel group 2 is allowed only 5 Mb and the rest is for the third tunnel). I know I could use QoS policies. But from my understanding they kick in only when congestion occurs. Is there way to limit the bandwidth used by certain types traffic not only in times of congestion?

Many thanks

Elena

I have this problem too.
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JORGE RODRIGUEZ Fri, 09/04/2009 - 10:32

Elena, have you come across qos and rate limiting , there is nothing I have read referencing rate limiting traffic kicking in only when when congestion occurs.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a008084de0c.shtml

See QoS Features Policing

http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/qos.html#wp1064207

Regards

Joseph W. Doherty Wed, 09/09/2009 - 16:47

Besides Jorge's mention of rate limiting (or policing), shaping is another method to restrict bandwidth utilization.

What's not clear, to me, is why 3 tunnels between the same two locations. Depending on platform, often better is one tunnel between locations that you manage bandwidth usage by different types of traffic.

london.ism Tue, 09/15/2009 - 01:28

Hi

I didn't actually mean 3 separate tunnels (I don't think you can implement separate tunnels between two same locations), but separate flows of traffic on the same tunnel.

I used policing and so far we didn't hit any issues.

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