11.1-20CC also has this feature. -Chris
-----Original Message----- From: Richard Irving [mailto:rirving@onecall.net] Sent: Tuesday, October 27, 1998 11:02 PM To: Sharif Torpis; nanog@merit.edu Subject: Re: Clue's for Clue-less
Sharif Torpis wrote:
this must be an 11.2 thing?
Unknown... Have you ever met an 11.1.xx technician *not* wearing synthetics to test it ?
:)
Richard Irving wrote:
It is built into IOS.... As you approach the ceiling, it
sends out an
SNMP log alert.
Now, how I select the number is confidential....
Ok. I will give you a hint.... I bring up the original sessions, and confirm integrity...
Then I look at the routes, size and count.
Then in the dark of the moon, wearing *no* synthetics, facing *magnetic* north... I devine the target number.
In other words... It is a judgement call...
Downstreams are easier. They must file routes with me, before I route them. I filter to the prefix.
Consider this merely another fall back mechanism to the general IOPS model.
Sharif Torpis wrote:
can u elaborate on the detection mechanism for setting off such alarms? do u look at % change in total routes in core
of internet?
e.g. sunday saw a change of 55k -> 60k which is ~10% change ... or do u look at specific blocks that should not be deaggregated and catch them if they are deaggregated ... thanks
Richard Irving wrote:
The only neighbors I lost on this one, dumped something they shouldn't..... If someone de-aggregates a /16, it fires off alarms.... Although these may be valid
advertisements,
We have opted for the "safe, rather than sorry" perspective. (Besides, the alarms *assure* prompt attention)
PS: 11.2.xx and higher have this command...