[c-nsp] Difference in IP FRR Link vs Per Prefix Option

[Alastair Johnson]

On 6/4/2013 2:39 PM, Phil Bedard wrote:
> Here is a good document with regards to Cisco's implementation:
>
> http://www.cisco.com/web/SK/expo2011/pdfs/IP_Fast_reroute_PeterPsenk.pdf

<snip>

>
> Juniper uses a more efficient implementation and only does per-prefix, but
> you can pick and choose whether or not you want link or node-link
> protection.  Node-link just adds another step in making sure the path.
> Not sure abou the ALU implementation.

To quickly answer- the Alcatel-Lucent implementation is to use 
per-prefix LFA backup next-hop calculation, preferring node-protection 
over link-protection.

AJ