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Intermittent Internet connection drops
Hi to all,
Here's my story:
I'm running Debian Sid (Unstable), with a custom 2.6.5 Kernel on a Sony Vaio Laptop PCG-K13Q. I connect to Internet through a wireless Netgear routeur using either the integrated Atheros wifi card or my PCMCIA Netgear MA401 wireless card. I prefer to use the Netgear card because it gives me a far stronger signal everywhere in the house.
The problem is that I experience some intermittent Internet connection drops or big slowdowns with the Netgear card. It may be when I start the computer or at any time when I'm browsing on the Net. My wife, who also have a Netgear card on his Windoze Me laptop, doesn't have this problem, so I guess that this is not a ISP/router problem. When the problem occurs, I can still access the wireless router internal html configuration wizard without problems. So this does not seem to be a problem with the wireless connection between the laptop and the router.
After some search, I thought that it could be a MTU related problem, so I tried various MTU settings, without success... I now suspect that it may be a DHCP or a DNS related problem, but I don't know how to handle this...
Someone has an idea of what could be the problem?
Thanks for your help.
--
Here's the content of my /etc/pcmcia/network.opts file, by which the connection with the Netgear card is configured:
# Network adapter configuration
#
# The address format is "scheme,socket,instance,hwaddr".
#
# Note: the "network address" here is NOT the same as the IP address.
# See the Networking HOWTO. In short, the network address is the IP
# address masked by the netmask.
#
case "$ADDRESS" in
*,*,*,*)
INFO="Sample private network setup"
# Transceiver selection, for some cards -- see 'man ifport'
IF_PORT=""
# Use BOOTP (via /sbin/bootpc, or /sbin/pump)? [y/n]
#BOOTP="y"
# Use DHCP (via /sbin/dhcpcd, /sbin/dhclient, or /sbin/pump)? [y/n]
DHCP="y"
#PUMP="y"
# If you need to explicitly specify a hostname for DHCP requests
#DHCP_HOSTNAME=""
# Use PPP over Ethernet (via the pppoe package)? [y/n]
PPPOE="n"
# Use WHEREAMI (via the whereami package)? [y/n]
WHEREAMI="n"
# Host's IP address, netmask, network address, broadcast address
#IPADDR=""
#NETMASK="255.255.255.0"
#NETWORK="10.0.1.0"
#BROADCAST="10.0.1.255"
# Gateway address for static routing
#GATEWAY="10.0.1.1"
# Things to add to /etc/resolv.conf for this interface
DOMAIN=""
SEARCH=""
# The nameserver IP addresses specified here complement the
# nameservers already defined in /etc/resolv.conf. These nameservers
# will be added to /etc/resolv.conf automatically when the PCMCIA
# network connection is established and removed from this file when
# the connection is broken.
DNS_1=""
DNS_2=""
DNS_3=""
# NFS mounts, should be listed in /etc/fstab
MOUNTS=""
# If you need to override the interface's MTU...
MTU=""
#MTU="1468"
# For IPX interfaces, the frame type and network number
IPX_FRAME=""
IPX_NETNUM=""
# Run ipmasq? [y/n] (see the Debian ipmasq package)
IPMASQ="n"
# Extra stuff to do after setting up the interface
start_fn () { return; }
# Extra stuff to do before shutting down the interface
stop_fn () { return; }
# Card eject policy options
NO_CHECK=n
NO_FUSER=n
;;
esac
# This tries to use Debian's network setup in /etc/network/interfaces
# if no settings are given higher up in this file. You can delete it
# if that isn't desired.
#
#is_true $DHCLIENT || \
#is_true $PUMP || is_true $BOOTP || is_true $DHCP || \
#[ -x /proc/sys/kernel/hotplug ] || \
#if [ -z "$IPADDR" -a -f /etc/network/interfaces ] ; then
# INFO="Debian network setup"
# start_fn () {
# log /sbin/ifup $1
# }
# stop_fn () {
# log /sbin/ifdown $1
# }
#fi
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