[j-nsp] SRGB allocation

Vladimir Blazhkun v.blazhkun at gmail.com
Tue Aug 11 07:54:56 EDT 2020


Hi, Antti,

We have considered multiple options, including the graceful automated RSVP-TE LSP restart, etc. But, in the end, reboot wins.

I would also recommend thinking about allocating the Segment IDentifiers and corresponding SR-MPLS labels in advance to ensure cross-vendor transparency (as they have different default SRGB ranges). It is also important to consider different MPLS implementation specifics, e.g. how MPLS label manager actually allocates the labels.

-- 
Vladimir Blazhkun (via iPhone).

> On 11 Aug 2020, at 12:27, Antti Ristimäki <antti.ristimaki at csc.fi> wrote:
> 
> Hi list,
> 
> For those that have already deployed SR-MPLS, I would be curious to know which methodology you have followed when defining the SRGB label range? Have you just consciously taken an overlapping label range and then during a maintenance window restarted RPD so that other protocols using the overlapping dynamic label range would re-program, or have you managed to find a big enough contiguous unused label range in your network to be used as SRGB?
> 
> In our very modestly sized network, the currently running protocols (LDP, RSVP, BGP-LU, MP-BGP) seem to occupy the dynamic label pool 16-999999 very sparsely, leaving not-so-many contiguous free ranges. I'm not having particularly hard time in finding an unused label range in our network, but I'd just be curious to hear how others have managed this.
> 
> Antti
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