On Thu, 8 Mar 2007, Steve Glaus wrote:

Hi everyone,

I'm at my wits end here with this and I don't know who to ask..

For about a week now my OpenBSD router has been acting up in the
strangest ways.  Route's dissapear, ethernet speeds crawl to a halt and
other wierdness.. I'm about to wipe this box clean and start from
scratch but I would really like to try and figure out what's going on
first..

I don't know if it helps if I describe some of the symptoms..

I'll try and draw a diagram first if I may...


ISP1        ISP2
|               |
|               |
|               |
dc1------- dc2
|   obsd3.9   |
|                   |
|-sis0--dc0--|
  |        |
  |        |---------DMZ
  | ---------    10.110.38/24


Interface dc0 is bridged with interfaces dc1&dc2





Firstly, and perhaps most alarming....

When I run the iperf utitlity between the router and a system on the
network I get about 3Mb/s throughput. When I run it between a system on
the DMZ and the router - the same thing. I tried disabling pf and get
the same results.
Running iperf between the boxes on the LAN I get proper results - of
course.

My only ideas are 1) failing NIC
                          2) NIC Drivers??
                          3) routing issues?




The second symptom is that periodically my vpn will drop throughout the
day - corresponding with this (I think) whenever I run a continual ping
to somewhere(anywhere) on the internet it will work fine any number of
times but then it'll stop - sit there and hang for 10 seconds perhaps
and then start back up

IF it is a failing NIC - could one bad NIC make the others act up
(interrupts?)


I'm not sure I made myself very clear on this - I'm having a very hard
time tracking this down. Any ideas or suggestions on investigation this
would be appreciated.
Any beautifully simple solutions even more so :)

I REALLY want to figure out what's going on instead of simply wiping the
box clean. Think of all the knowledge value :|


Thanks a lot...


Steve Glaus

Well a dmesg would help. Do you have auto-neg set on your nic's?

Regards John.

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