Date: Mon, 7 May 2001 12:04:42 +0100 (BST) From: Randall Skelton <rhskelto@atm.ox.ac.uk> To: freebsd-hardware@freebsd.org Subject: Dropped packets... Message-ID: <Pine.LNX.4.21.0105071203150.1852-100000@homer.atm.ox.ac.uk>
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Hi all,
I am having a rather strange problem with my network interface in FreeBSD
4.2/4.3. It is an sis900 card which appears to be fully supported and was
detected on install. Nothing further has been done to the machine (it is a
brand new *vanilla* install of 4.3).
The problem almost appears to be the machine being sleepy and failing to
reply to network requests until it is rudely awakened. After the
machine has been idle for an hour or so (no logins and little
activity) the ethernet card fails to respond when a connection is
attempted via ssh/ftp/telnet/etc... To 'wake-up' the interface, I
must ping the machine from within the subnet and I seem to loose the first
packet? (NB: if I ping the machine from outside the subnet I loose all
packets)
(from within the subnet)
PING tulip... (xxx.1.242.xxx): 56 data bytes
64 bytes from xxx.1.242.xxx: icmp_seq=1 ttl=255 time=0.6 ms
64 bytes from xxx.1.242.xxx: icmp_seq=2 ttl=255 time=0.5 ms
64 bytes from xxx.1.242.xxx: icmp_seq=3 ttl=255 time=0.5 ms
Note that icmp_seq=0 is lost. Once, the machine 'wakes up' the card
appears fine and I can connect to it from outside the subnet.
ifconfig gives the following:
sis0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet xxx.1.242.xxx netmask 0xfffff800 broadcast xxx.1.247.xxx
inet6 fe80::240:33ff:feab:fd85%sis0 prefixlen 64 scopeid 0x1
ether 00:40:33:ab:fd:85
media: autoselect (100baseTX <full-duplex>) status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UTP <full-duplex> 10baseT/UTP none
I am in the process of turning on excessive levels of debugging and I'll
post more when I get it. In the meantime, does anyone have any ideas as
to what is going on here? Any hints of what I should be looking at?
Cheers,
Randall
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