I need some help in understanding how to configure the point-to-cloud (hose) model for MPLS VPN's so we can offer some QoS guarantee for our MPLS VPN customers.
I've seen lots of explanation about what the hose model is but no configuration examples which is what I'm after.
CE1 -- PE1 -- P -- PE2 -- CE2
If we take the very simple topology above and we want to offer a 256K ICR and 512K ECR at both CE's, what is the necessary config to achieve this on the PE and P? Is it a simple police statement in both the output and input service-policy of the PE-to-CE interface to rate limit it accordingly or am I missing something here? Is there any marking done on the PE's? Can someone please draft me a config for my example?
Continuing on with the example above, does the hose model dictate that CE2 can only send 512K to CE1 and receive 256K from CE1? This leads me to my other confusion - what if CE1 and CE2 both have a 2M/2M SHDSL connection into the MPLS VPN cloud - aren't they expecting that they should be able to send/receive 2M/2M to/from their other sites? Wouldn't this policing mean that they've paid for a 2M/2M circuit but it's being rate limited to 512K/256K so wouldn't they be better off to have bought a 512K/256K ADSL connection???
Yeah I'm very confused about the access link speed and the service speed.
I'm trying to think like a customer and if I paid for a 2M/2M (site1) then I'd expect to send/receive this much to/from all my other VPN sites. I mean if site2 and site3 were both sending me 2M each then obviously I would get congestion at site1 because I've only got a 2M pipe.
But site1 was only able to receive 512K ICR and site2 and site3 were sending me 1M each, wouldn't I still hit congestion because eventhough I've got a 2M pipe, I'm being policed at 512K???
At some statment you are pointing to Policing, In another you are pointing to QoS marking! what is exactly your requirment? If you want to apply QoS marking , Service provider uses different techniques (Models) for Impleming QoS. Each model has its own characterstics, and they are:
1- Pipe Model.
2- Short Pipe model.
3- Short Model.
In Short pipr model, the forwarding of the traffic is based on the LSP diffserv information (Customer Marking), while In short model, the Traffic is forwarded based On the Tunnel LSP information. The Ip precedence bits are copied into the MPLS experemintal bits. If the marking done based on DSCP, then the 1st 3 bits are copied. The marking is preserved when the label is pushed or Swapped, However its not preseved when the label is Poped. So it really depends on the SP QoS Policy.
Looking at your last paragraph, the ADSL offers a symetrical Bandwidth. UPlink with rate and downlink with different speed. A gain what Service level agreement do you have with the Service provider?
I'm interested in applying the point-to-cloud (hose) model in a lab environment. I believe this is done by simply policing the ICR and ECR on the PE-CE interface on the PE router but can't find any configuration examples or case study to help me.
1/ I was wondering if anyone has a config of the hose model because I haven't been able to find any on the internet and cisco web site.
Eg: Lab set up.
ALL sites are to have a 256K ICR and 512K ECR.
2/ I'm confused at the actual access line speed and the service speed to/from the VPN cloud. Access speed can be 2M/2M SHDSL as an example, yet the service or SLA provided by the SP might be 512K ICR and 256K ECR. I'm a bit lost as to why a customer would accept a lower service/SLA than their access speed.
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