[c-nsp] ASR920 and EEM:Mandatory.dualrate_eem.tcl

[Laurent Dumont]

At $old_job we had issues with the 920 failing to switch between the 1G and
10G shaping internally after the SFP swap. It would report that everything
went well and negotiate to 10G to only shape the actual line rate at 1G.

Fun times.

On Mon, Aug 26, 2019, 4:25 PM Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Mon, Aug 26, 2019 at 02:46:19PM +0200, Gert Doering wrote:
> > does anyone know what "EEM:Mandatory.dualrate_eem.tcl" is?
>
> So, now I know - thanks to all who answered.
>
> I'm not sure I wanted to know in the first place, and now I do not
> know if I'm scared or morbidly fascinated.
>
> The hacker in me ("let's see if we can make this work, somehow") is
> morbidly fascinated by having a mechanism in the box that is able
> to change config (loopback, vty) to telnet(!?) into the box, put
> files into bootflash, mount a tmpfs from there, then do other things,
> but is *not* able to "just do the right thing directly".
>
> Also, what is wrong with the good old "these ports are not automatic
> dual-speed ports, so if you insert an 1G transceiver, you get a log
> message that you tells you to configure 'speed 1G' to make it work"?
>
>
> The operator in me starts to understand how "you have MPLS configured
> on one port" can lead to "all 1G ports stop forwarding" now (we had one
> box where the 1G part just died, and TAC refused to swap it because
> we had MPLS configured on the 10G links, so "IT MUST BE THAT BUG!").
>
> And I do not want to be close to these boxes anymore.  What is in there
> scares me.
>
>
> So, if I need EoMPLS/VPLS capability (12-24 1G ports, 2-4 10G ports,
> plain point-to-point pseudowires, or pseudowires with a local switching
> instance - VPLS or EVPN), what other vendors build such a box and do
> not hide madness inside?  Conceptually similar to the ASR920, that is,
> no full table, small footprint / fairly low power consumption, etc.
>
> gert
>
> --
> "If was one thing all people took for granted, was conviction that if you
>  feed honest figures into a computer, honest figures come out. Never
> doubted
>  it myself till I met a computer with a sense of humor."
>                              Robert A. Heinlein, The Moon is a Harsh
> Mistress
>
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
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