[j-nsp] IP/MPLS fast convergence

[Mark Tinka]

On Thursday, December 22, 2011 02:34:22 AM Amos Rosenboim 
wrote:

> I'm planning a greenfield IP/MPLS network for a mobile
> operator. The requirements are to support MPLS services
> (mainly L3 VPNs but also some VPLS), enforce  strict but
> fairly simple CoS model, and support fast convergence.
> No requirement for CSPF based TE.

Watch out though, the thing with Junos is that if you ever 
want to do IGP Shortcuts in the future, you need CSPF-
enabled TE.

Cisco allow you to run IGP Shortcuts (Autoroute Announce, as 
they call it) without CSPF.

> I'm considering to drop RSVP in favor of LFA and LDP, but
> was wondering if anyone is actually using this in the
> field, if so what is the impression.

How I'd love to do that, too :-). But, for now, we need 
RSVP-TE for p2mp LSP's re: running NG-MVPN's. I know mLDP is 
now shipping in Junos 11.2, but we're nowhere near moving to 
that line yet. But then again, we'll probably maintain RSVP-
TE for IPTv traffic, but use mLDP for data-based Multicast 
services.

Moroever, we're dealing with both Cisco and Juniper in 
different parts of the network, so although LFA/IP-FRR is 
cool in that node/link protection is locally significant to 
the box running it, we'd rather all boxes had support for 
maximum effect.

As of now, some platforms do, some don't. We estimate we 
should be able to deploy it, across the board, in about 2 or 
3 years.

Cheers,

Mark.
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