[j-nsp] multiple lsp between 2 router

[Truman Boyes]

Hi there,

Let's assume you have a 100Mbps link and you plan to carry gold,  
silver and bronze traffic. These types of traffic will likely have  
different markings (either DSCP or some behavior aggregate  
classifier). You can apply a policer based on these dcsp markings, etc.

Additionally, you can apply a policer to an individual LSP (to limit  
it to 20Mbps for example). There are benefits and drawbacks to doing  
this. For example, if you wanted to have bronze traffic be able to use  
all of the 100Mbps if the other traffic classes were not transmitting,  
you would not be able to do this if you were hard policing of a  
particular rate.

You also bring up another point. Getting different CoS to take a  
particular path. You need to look at Class Based Forwarding to make  
this happen, otherwise assuming the LSP1, LSP2, and LSP3 are all  
between the same PE, the traffic will just pick some LSP and ride  
across it. In order to provide the mapping of a forwarding class to a  
particular LSP, a forwarding table policy will need to be installed.

Kind regards,
Truman Boyes



On 8/01/2009, at 12:26 AM, The Drifter wrote:

>
> On top of this is it possible to assign b/w onto each LSP? For  
> example on a 100mbps link
>
> 1. 20mbps on LSP1 mapped to COS Gold
> 2. 30mbps on LSP2 mapped to COS Silver
> 3. 50mbps on LSP3 mapped to COS bronze
>
> Thanks,
> Jimmy> From: Jeff.Richmond at frontiercorp.com> To: sean at clarke-3.demon.nl 
> ; faizalr81 at gmail.com> Date: Wed, 7 Jan 2009 09:01:57 -0500> CC: juniper-nsp at puck.nether.net 
> > Subject: Re: [j-nsp] multiple lsp between 2 router> > To confirm  
> what Sean says, it does work just like this. I have a number of  
> places that have multiple LSPs that load balance, and I have others  
> that have multiple LSPs that I bypass load balancing with policies  
> for various reasons (for example, to test different path latencies,  
> etc.).> > -Jeff> > > ________________________________________> From: juniper-nsp-bounces at puck.nether.net 
>  [juniper-nsp-bounces at puck.nether.net] On Behalf Of Sean Clarke [sean at clarke-3.demon.nl 
> ]> Sent: Tuesday, January 06, 2009 9:14 PM> To: Faizal Rachman> Cc: juniper-nsp at puck.nether.net 
> > Subject: Re: [j-nsp] multiple lsp between 2 router> > Faizal  
> Rachman wrote:> > Hi All,> > Did anywone know how to config 2 lsp in  
> 2 back-to-back routers while> > implementing mpls loadbalancing?> >  
> Thank you.> >> > Faizal R> >  
> _______________________________________________> > juniper-nsp  
> mailing list juniper-nsp at puck.nether.net> > https://puck.nether.net/mailman/listinfo/juniper-nsp 
> > >> >> >> You can configure as many RSVP signalled LSP's as you  
> like.> > Configure per-packet load balancing, and it should just  
> work.> > # show routing-options forwarding-table> export lbpp;> > #  
> show policy-options policy-statement lbpp> then {> load-balance per- 
> packet;> }> > > # show protocols mpls> label-switched-path LSP-1 {>  
> to 2.2.2.2;> }> label-switched-path LSP-2 {> to 2.2.2.2;> }> > > > >  
> cheers> Sean> > _______________________________________________>  
> juniper-nsp mailing list juniper-nsp at puck.nether.net> https://puck.nether.net/mailman/listinfo/juniper-nsp 
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