On 4 July 2018 at 22:25, Aaron Gould <[email protected]> wrote: > I'm concerned how to go from my LDP environment to SR/SPRING and what if some > of my gear doesn't support SR/SPRING ? Is this LDP/SR mapping thing easy ? > > > Aaron
Hi Aaron, I think you're running Cisco gear too right so hopefully it's OK if I supply you with a Cisco link? SR has been designed to explicitly support an LDP to SR migration. To do this you need to use an SR mapping server and mapping client. In terms of implementation though, this is as simple as nominating one (or preferably more) of your boxes that support both LDP and SR to be the mapping server and client. Here is an IOS-XR example, it's literally a couple of lines of config: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/segment-routing/configuration/guide/b-seg-routing-cg-asr9k/b-seg-routing-cg-asr9k_chapter_01001.html SR mapping nodes that support both LDP and SR will allocate SIDs to label mappings received from your LDP only nodes and advertise them through IGP extensions to your SR only nodes. Vice versa they can map SR to LDP. There is also no problem having SR and LDP running on the same box, set your SRGB/SRLB appropriate and SR and LDP will allocate labels in different ranges and not overlap. SR has been designed such that if you have a TE-free deployment and have an LDP set-and-forget type deployment you don't need a controller to deploy it and a controller-free migration is natively supported. So risks relating to the SR technology it's self should be minimal. Having said all that - I'm not telling you this works perfectly and without bugs, the usual caveats apply, YMMV etc. It is new code and not all the drafts are finalised but vendors are implemented them even though are still subject to change, which we all know comes with virtually guaranteed issues ;) I'm just saying all this because I've been reading through all the drafts lately trying to evaluate SR like everyone else.See this link for more details on LDP to SR migration: https://tools.ietf.org/html/draft-ietf-spring-segment-routing-ldp-interop-13 Cheers, James. _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
