[rancid] Ciena Waveserver - fluctuating power values round 2

Chris Wopat me at falz.net
Wed Apr 14 17:54:48 UTC 2021


Hi folks,

Way back in the before times, we had reported an issue where one of
the commands that RANCID runs constantly has some churn values, and to
get it filtered.

https://shrubbery.net/pipermail/rancid-discuss/2018-August/010346.html

This discussion started on list, went off-list for testing, and it seemed fixed.

I'm not sure what happened, but the issue is back. We didnt notice it
for quite some times because:

* I believe our testing was with the dev branch at the time (3.99) and
we just left it there for a while.

* Unrelated to rancid, but the system that auto creates our rancid
config file, stopped adding the waveservers to it about 6 months ago
and uhh, we didn't notice until recently.

I believe during this 6 month gap, we actually properly upgraded to
3.13, and now that we fixed item 1) above noticed the issue.

To re-summarize, the last column of this ascii cell - 'Power (W)'
always has churn, here's an example of a recent diff. This is a
subsection of the 'chassis show' command, a non-wrapped output of this
can be found here: https://falz.net/static/waveserver-1.6-chassis.txt

example diff below:

  ! +------------------------- POWER SUPPLY STATUS
---------------------------------------+-----------+
  ! | Slot   | Oper   | Type    | Model            | Serial Number |
Part Number / Rev    | Power (W) |
  ! +--------+--------+---------+------------------+---------------+----------------------+-----------+
- ! | PSU-1  | Normal | DC      | WS DC PSU        | K846S2004RABP |
 186-1501-900/AB   |     260.0 |
+ ! | PSU-1  | Normal | DC      | WS DC PSU        | K846S2004RABP |
 186-1501-900/AB   |     260.5 |
  ! +--------+--------+---------+------------------+---------------+----------------------+-----------+
- ! | PSU-2  | Normal | DC      | WS DC PSU        | K846S2004ZABP |
 186-1501-900/AB   |     311.5 |
+ ! | PSU-2  | Normal | DC      | WS DC PSU        | K846S2004ZABP |
 186-1501-900/AB   |     312.0 |
  ! +--------+--------+---------+------------------+---------------+----------------------+-----------+

Not sure what best way is to re-test this - heasley would you like the
entire output from the device, from the command, something else?

Thanks,
Chris



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