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Simple shaping and QoS on a IPSEC/GRE tunnel

Unanswered Question

Hi !


We have a VPN gateway with around 20 tunnels to different locations around the world. Customers buy a certain bandwith from us, which often, but not always is limited by their remote internet connection.

Central internet connection is big, so no bottleneck there..


I'm looking for to provide a traffic shaping functionality to shape them to their "paid-for" bandwith.

Both for our cause, not to give anything for free, and also not to overload the remote end.

I would also like to provide a basic QoS, unfortunately it seems like CBWFQ is not supported on tunnel interfaces. RED works though...


I've done a basic configuration - what do you think of this ? :


class-map match-any tunnel

match any

!

policy-map qos

class tunnel

bandwidth percent 95

random-detect

!

policy-map 384kb

class class-default

shape average 384000

service-policy qos

!

interface Tunnel11

bandwidth 384

ip address x.x.x.x

ip mtu 1420

load-interval 30

service-policy output 384kb

tunnel source FastEthernet0/0

tunnel destination x.x.x.x

crypto map ToRemote


/ Daniel


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Anonymous (not verified) Tue, 03/16/2004 - 15:52
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I guess the config is right. The min CIR which the customer will configure was 1/2 CIR and he will be bursting his traffic to the access rate of the link. So you should calculate the bandwidth guranteed accordingly

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