Re: [hobbit] conn alerts based on ping time

[Charles Jones <jonescr (at) cisco.com>]

Deal, Richard wrote:

> Sounds like they need to through in MRTG and go red when the traffic 
> is high on the link.
>
> And then throw in things like
>
> bb-ospf.pl to check that ospf is not flapping over the link
>
> bb-xsnmp.pl to check out the routers at each end and the interfaces
Yeah I'm aware of the existance of bb-mrtg.pl, although I have never set 
it up.  I guess I was hoping that Hobbit could natively support ping 
testing rather than having to install mrtg and hack stuff in.  Its sort 
of confusing for a newbie when you are showing them the ropes of Hobbit 
and start bringing external scripts into the mix (especially ones that 
require modifying before they will work).

>  
>
> you can also use http to a reliable server on the remote side as part 
> of the link test.  Just make the http test for the link dependent on 
> the router and the conn test to the web server.
>
>  
That won't work in this case as all of the companies servers are in a 
CoLo, Hobbit is running at the CoLo, and they want to test the T1 link 
at the office from the CoLo (there are no servers on the other side of 
the office T1 to do a test against), and even if there was, it still 
would not give them a heads-up to the T1 being slow/saturated, as Hobbit 
only alerts when the conn test outright fails.

-Charles

>  
>
>  
>
> ------------------------------------------------------------------------
>
> *From:* Charles Jones [mailto:jonescr (at) cisco.com]
> *Sent:* Friday, January 13, 2006 1:01 PM
> *To:* hobbit (at) hswn.dk
> *Cc:* crimson (at) technologist.com
> *Subject:* [hobbit] conn alerts based on ping time
>
>  
>
> I'm helping someone set up Hobbit at their company, and they want to 
> monitor the status of a remote office T1 link.  Of course Hobbit can 
> tell them if the link goes totally down, or you can ignore bad pings 
> with "badconn",  but they want to know when the link is *slow*, as 
> they often have periods of time when the pings are not dropped, but 
> instead taking 1-3 seconds (instead of <100ms like normal). 
>
> Is there any chance that Hobbit will soon support comparing the ping 
> replies to specifiied values for green, yellow, and red?
>
> Somethign like:
>
> 1.2.3.4 myhost.com # conn:200:500
>
> This would make myhost.com's conn test go yellow if the ping was 
> between 200 and 500ms, and red if it was over 500ms.
> Since hobbit already graphs the numeric values of the ping replies, 
> this seems like it would be fairly easy to add?
>
> -Charles