[j-nsp] Internet routes in MPLS network, global table or own VRF?

[Phil Bedard]

We use RSVP exclusively in our business access and core networks due to markets wanting the 50ms protection for services like cell backhaul and CES.   The boxes we use are fairly small and cheap and handle RSVP fairly well (not C or J but A).  We do break up our access networks into multiple IGP areas and make use of MS-PW.  

Phil

On Jan 27, 2012, at 9:56 PM, Mark Tinka <mtinka at globaltransit.net> wrote:

> On Saturday, January 28, 2012 07:59:36 AM Keegan Holley 
> wrote:
> 
>> Makes sense.  I'm still straddling the line between large
>> enterprise and small service provider so I haven't felt
>> the resource bite from RSVP everywhere.  Interesting to
>> hear that perspective though.  I've seen RSVP work in a
>> T-series/CRS based large network though so I guess
>> platform choice ($$) and design play a role as well.
> 
> Running RSVP in the core is fairly common because there are 
> fewer boxes to deal with, and the aggregation and edge parts 
> of the network can simply run LDP, tunneling that inside an 
> RSVP-based core as needed.
> 
> But in some cases (such as BGP-MVPN or end-to-end strict 
> paths), one may need to run RSVP edge to edge, edge to 
> aggregation, edge to core, e.t.c. This isn't always 
> desirable, particularly if you want to make it avaialble as 
> a blanket feature for customers that aren't going to pay 
> additional for it (and why should they, it might not 
> necessarily be adding any real value to them).
> 
> In our access, we have a number of ME3600X Ethernet 
> switches. These are pretty powerful devices, but I'd also 
> shudder as to how much RSVP state they can maintain as the 
> network expands.
> 
> Besides, as I mentioned before, we like the MPLS topology to 
> follow the IP topology, and LDP does this quite nicely. But 
> if absolutely unavoidable, we will deploy RSVP.
> 
> Mark.
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