[c-nsp] 7507 crashes

[jp]

Just an update:

I had tried two sets of AC power supplies, different chassis, VIP, RSP, 
port adaptors with no improvement. Regular VIP crashes and random reboots.

I went to a pair of DC power supplies, wired to a 25 amp Lorain 
rectifier (who also made the cisco DC power supplies), and the system is 
rock solid now. 

The Lorain rectifier power supply doesn't even have a battery string 
hooked up. The rectifier has some massive capacitors in it, enough to 
make car audio people get warm and fuzzy looking at it.

The cisco is drawing about 6 amps of DC power and seems to be a little 
quieter, as the AC power supplies had big fans in them I think.


On Fri, Jul 13, 2007 at 11:18:21AM -0400, Rodney Dunn wrote:
> On Fri, Jul 13, 2007 at 10:26:03AM -0400, jp wrote:
> > We have a 7507/rsp4/vip2-50 with fast ethernet and ATM t3 card doing ATM 
> > over t3 for DSL termination.
> 
> You have probably seen my emails already about a 75xx doing DSL termination.
> :)
> 
> 
> Before we go down the below path can you post a crashinfo from the
> RSP or VIP so we can look at it?
> 
>  Whenever the power flickers a tiny bit (not 
> > enough to activate the UPS), and sometimes the UPS switchover itself, 
> > the 7507 will either crash the VIP card or reboot. I have a portmaster 
> > hooked to the RSP console port so I can remotely see what happens 
> > anytime. The 7507 has dual AC power supplies. A nice UPS would be solve 
> > it, but we need monster run time that normal UPS's don't provide, and an 
> > autostart generator is not suitable for this site.
> > 
> > We have the tripplite APS power backup units connected to big AGM deep 
> > cycle batteries. It does provide good backup time and power, but the 
> > switchover between utility and battery is not 100% transparent. All our 
> > other gear at the site must have big enough capacitors in the power 
> > supply that it does not seem to matter.
> > 
> > Would DC power supplies be more apt to smoothly power the cisco? I've 
> > got an old lorain 25amp rectifier that seems like it should power it and 
> > some batteries fine. It had powered an old tadiran PBX that was bigger 
> > than a 4-draw filing cabinet.
> > 
> > Is this a good way to go, or should I be chasing down some other path?
> > 
> > -- 
> > /*
> > Jason Philbrook   |   Midcoast Internet Solutions - Wireless and DSL
> >     KB1IOJ        |   Broadband Internet Access, Dialup, and Hosting 
> >  http://f64.nu/   |   for Midcoast Maine    http://www.midcoast.com/
> > */
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-- 
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Jason Philbrook   |   Midcoast Internet Solutions - Wireless and DSL
    KB1IOJ        |   Broadband Internet Access, Dialup, and Hosting 
 http://f64.nu/   |   for Midcoast Maine    http://www.midcoast.com/
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