Large prefix lists/sets on IOS-XR

Fri Dec 9 15:06:56 UTC 2022

Hi Saku.

I don't know that Netconf or gRPC are any faster than loading cli. Those
protocols facilitate automation so that the time it takes to load any one
device is not a significant factor, especially when you can roll out
changes to devices in parallel. Also, it's easier to build the changes into
a structured format than assemble the right syntax to interact with the CLI.

On Fri, Dec 9, 2022, 09:38 Saku Ytti <saku at ytti.fi> wrote:

> Can Andrian and Joshua explain what they specifically mean, and how
> they expect it to perform over what Steffann is already doing (e.g.
> load https://nms/cfg/router.txt)? How much faster will it be, and why?
>
> Can Steffan explain how large a file they are copying, over what
> protocol, how long does it take, and how long does the commit take.
>
> We used to have configurations in excess of a million lines before
> 'or-longer' halved them, and we've seen much longer times than 30min
> to get a new config pushed+commtited. We use FTP and while the FTP
> does take its sweet time, the commit itself is very long as well.
>
> I refrain from expressing my disillusionment with the utility of doing
> IRR based filtering.
>
> On Fri, 9 Dec 2022 at 15:38, Andrian Visnevschi via NANOG
> <nanog at nanog.org> wrote:
> >
> > Two options:
> > - gRPC
> > - Netconf
> >
> > You can use tools like paramiko,netmiko or napalm that are widely used
> to programmatically configure and manage your XR router.
> >
> >
> > On Fri, Dec 9, 2022 at 2:24 AM Joshua Miller <contemno at gmail.com> wrote:
> >>
> >> Netconf is really nice for atomic changes to network devices, though it
> would still take some time for the device to process such a large change.
> >>
> >> On Thu, Dec 8, 2022 at 6:05 PM Sander Steffann <sander at steffann.nl>
> wrote:
> >>>
> >>> Hi,
> >>>
> >>> What is the best/most efficient/most convenient way to push large
> prefix lists or sets to an XR router for BGP prefix filtering? Pushing
> thousands of lines through the CLI seems foolish, I tried using the load
> command but it seems horribly slow. What am I missing? :)
> >>>
> >>> Cheers!
> >>> Sander
> >>>
> >>> ---
> >>> for every complex problem, there’s a solution that is simple, neat,
> and wrong
> >
> >
> >
> > --
> >
> > Cheers,
> >
> > Andrian Visnevschi
> >
> >
>
>
> --
>   ++ytti
>
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