It was recommended that I post my network config info to help figure this
out.  Duh -- my bad, sorry.

I've got two NICs.  ifconfig files are as follows:

ifconfig.de0 (WAN):  207.207.64.141 netmask 255.255.255.252 media 10baseT

ifconfig.de1 (LAN):  207.207.90.25 netmask 255.255.255.248 media 10baseT

resolv.conf:
nameserver 216.162.192.2
nameserver 199.201.191.1
lookup file bind
search awenet.com

rc.conf:
hostname="ghek.awenet.com"                      # if blank, use /etc/myname
defaultroute="207.207.64.142"                   # if blank, use /etc/mygate

I think that covers it.

My problem, incidentally, has been worked around -- I used arp -s to create
a permanent arp entry for the defaultroute IP address.  Network pauses
ceased at that point.  It appears that the arp entry was expiring after 20
minutes, then not getting looked up again for about 20 seconds.

-Bill


>On Sun, Oct 03, 1999 at 03:12:39PM -0700, William R. Dickson wrote:
>> (Sorry if this comes twice; I tried to send it before remembering I wasn't
>> subscribed to tech-net.)
>>
>>
>> At 6:14 PM -0700 9/17/99, Bill Studenmund wrote (replying to me):
>>
>> >> My NetBSD box is a Motorola StarMax 5000/250 with a pair of NIC cards in
>> >> it, both using the Digital chip. de0 is connected to a DSL bridge. de1 is
>> >> connected to a hub, and the system routes for the rest of my network.
>> >>
>> >> Most of the time, it works great.  But if I'm putting a constant load on
>> >> the network (not a heavy load, just a constant one), I get periodic
>> >> "pauses" -- every 15-60 minutes, I'll suddenly get a 15-30 second period
>> >> during which I can't ping the router at my ISP.  Then it returns to
>>normal.
>> >> I've tried swapping de0 out for another card, with no effect.  The ISP
>> >> can't find any problems, nor can the DSL line provider.  The only clue I
>> >> have is this error in my messages log, which appears several times
>>whenever
>> >> the pause occurs:
>> >>
>> >> Sep 15 19:42:14 ghek /netbsd: arplookup: unable to enter address for
>> >> 204.85.32.5 (host is not on local network)
>> >>
>> >> (204.85.32.5 is not a local machine; it's the host I'm communicating with
>> >> when I generate the constant traffic.  Okay, I'm playing Warbirds.  I
>>admit
>> >> it.  But the problem's definitely not at their end; I can't ping any
>> >> addresses at all beyond de0's IP.)
>> >>
>> >> Does this suggest anything to anyone?  Any ideas what the problem
>>might be?
>> >
>> >Bring this up on tech-net. Something's messing up with arp. You might also
>> >try ping -n whent hings are bad as ping will normally trigger a name
>> >lookup.
>>
>> So, I'm bringing it up on tech-net.  I've done a lot more troubleshooting
>> since.
>>
>> First, I know the problem's not at the ISP's end.  When I hook my desktop
>> mac up to the DSL line directly, there are no problems.  Also, although
>> I've duplicated the problem by setting up a Centris 650 with netbsd/mac68k
>> to do the routing and getting the same results as I do with the StarMax, I
>> can use the same Centris 650 running Mac OS with a program called
>> IPNetRouter to do the routing, and the problem does not occur.
>>
>> Oddly enough, the problem was also present with the StarMax running Yellow
>> Dog Linux.
>>
>> I've done a tcpdump on both interfaces just today.  The problem seems to
>> occur here:
>>
>> 11:27:51.829725 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.126.1
>> 01.100 tell 207.207.64.141
>> 11:27:51.829729 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.126.1
>> 01.100 tell 207.207.64.141
>> 11:27:51.829734 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.126.1
>> 01.100 tell 207.207.64.141
>> 11:27:51.829738 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.126.1
>> 01.100 tell 207.207.64.141
>> 11:27:51.829743 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.126.1
>> 01.100 tell 207.207.64.141
>> 11:27:51.829747 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 204.85.32
>> .13 tell 207.207.64.141
>> 11:27:51.829752 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 204.85.33
>> .5 tell 207.207.64.141
>> 11:27:51.829756 0:0:94:82:9d:74 ff:ff:ff:ff:ff:ff 0806 42: arp who-has
>> 207.207.6
>> 4.142 tell 207.207.64.141
>>
>> It corresponds with this in the messages log:
>>
>> Oct  3 11:27:13 ghek /netbsd: arplookup: unable to enter address for
>> 207.126.101
>> .100 (host is not on local network)
>> Oct  3 11:27:21 ghek last message repeated 4 times
>> Oct  3 11:27:22 ghek /netbsd: arplookup: unable to enter address for
>> 204.85.32.1
>> 3 (host is not on local network)
>> Oct  3 11:27:23 ghek /netbsd: arplookup: unable to enter address for
>> 204.85.33.5
>>  (host is not on local network)
>>
>> Not sure why the timestamp doesn't match.
>>
>> Any ideas?
>
>How about posting all your network configuration information?
>
>Regards,
>	-is
>
>--
> * Progress (n.): The process through which Usenet has evolved from
>   smart people in front of dumb terminals to dumb people in front of
>   smart terminals.  -- obs@burnout.demon.co.uk (obscurity)



--
 William R. Dickson -- Consuming the Earth's limited resources since 1968
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