North American Network Operators Group
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Historical
Re: enormous instabilities @ CA 0800 EDT daily?
- From: Alan Hannan
- Date: Tue Apr 30 13:35:45 1996
Et. Al,
] I was looking over some trend graphs which I remember to look
] at from time to time and noticed that there recently has been
] a large level of instability between 7 and 9 a.m. Eastern (D.C.) time,
] with the worst period occurring at about 0800.
You'll notice a supplemental spike occuring occasionally ~6pm,
along w/ another around 2am.
] The instability graphs that compute.merit.edu puts together
] shows a very similar trend, at least for the past few days.
Indeed.
] Is anyone else seeing this?
It's there, I've never noticed it before, neither in feeling the
network, or watching graphs......
] If so, does anyone have any theories? I'd really like to see this fixed.
1/ Brainless Managers come into work and power cycle routers,
causing massive updates.
- no flaws
2/ Network Engineers are coming into work at this time and
modifying their routing policies because of visions their dreams
gave them.
- flaw: Real Engineers don't come into work before 10AM, and
never work past 7am.
3/ Automated processes by NSP engineers on the West Coast process
filter modifications and routing policy adjustments at ~4-5AM
West Coast Time, translating to 7-8AM EST.
- flaw: Hmm.
4/ Initial usage of the internet spikes ~7am, when office
individuals get to work, causing high utilization, impeding
routing updates, and causing oddness.
- flaw: Routers should be able to handle it... *cough cough*
None of these are based on empirical evidence, just creative
thoughts.
-a
|
