[opensuse] my internet hub prefers windoze to linux!
I have a cable modem, connected to a 4 port hub for my home network. The two most active ports are the ones connected to my linux box and my son's hub. He usually runs just his xp box, maybe another machine. Occasionally he hooks up 4-5 machines and plays games over the net with his buddies, all hooked up to his hub. When he does that, my linux box essentially loses all contact with the net. Kmail, konqueror, firefox, opera etc, all freeze up in my linux box, both under suse10.1 and 10.2. The maddening thing is that if i fire up vmware and start a windoze virtual machine inside my linux, it has *no* problem accessing the net!!!! There must be an explanation for this, but I know too little to come up with it. What do the gurus say? d -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wednesday 24 January 2007 20:07, kanenas@hawaii.rr.com wrote:
I have a cable modem, connected to a 4 port hub for my home network. The two most active ports are the ones connected to my linux box and my son's hub. He usually runs just his xp box, maybe another machine. Occasionally he hooks up 4-5 machines and plays games over the net with his buddies, all hooked up to his hub. When he does that, my linux box essentially loses all contact with the net. Kmail, konqueror, firefox, opera etc, all freeze up in my linux box, both under suse10.1 and 10.2. The maddening thing is that if i fire up vmware and start a windoze virtual machine inside my linux, it has *no* problem accessing the net!!!! There must be an explanation for this, but I know too little to come up with it. What do the gurus say? d
Toss hub. Buy Switch. -- _____________________________________ John Andersen
On Wednesday 24 January 2007 23:14, John Andersen wrote:
There must be an explanation for this, but I know too little to come up with it. What do the gurus say? d
Toss hub. Buy Switch. John is correct...
... but maybe a small explanation would help... The hub is not a router (it is selective), resulting in high packet collisions and subsequent retransmissions. Also there is a high degree of wasted filtering as each machine's IP stack rejecting packets not designated for that machine. A modern switch (on the other hand) has its own arp cache (it keeps track of all the hardware addresses plugged into the switch) which allows it to route packets intended for machine B to go only to machine B. This cuts way down on packet collisions and subsequent retransmissions as saving huge amounts of band width. I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network. -- Kind regards, M Harris <>< -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wednesday 24 January 2007 20:40, Tom Patton wrote:
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!! -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wednesday 24 January 2007 23:10, kanenas@hawaii.rr.com wrote:
On Wednesday 24 January 2007 20:40, Tom Patton wrote:
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!!
So If I understand that correctly you are using bridged networking in the vmware machine? That requires the host os to alias the nic, and put it into promiscuous mode, which means it has to examine every single packet, rather than let the hardware filter out what is not destined for your machine. Why not use Nat (vmnet8)? It works flawlessly, puts another layer between your virtual machine and the nasty-net, and is in my ever so humble opinion (*cough*) the preferred way to run virtual machines. -- _____________________________________ John Andersen -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 25 January 2007 09:22, John Andersen wrote:
So If I understand that correctly you are using bridged networking in the vmware machine?
That requires the host os to alias the nic, and put it into promiscuous mode,
No, not really. proxyarp does the job well, without using promiscuous mode. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 25 January 2007 10:28, Anders Johansson wrote:
On Thursday 25 January 2007 09:22, John Andersen wrote:
So If I understand that correctly you are using bridged networking in the vmware machine?
That requires the host os to alias the nic, and put it into promiscuous mode,
No, not really. proxyarp does the job well, without using promiscuous mode.
Proxyarp requires promiscuous mode too. -- _____________________________________ John Andersen -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wednesday 24 January 2007 22:22, John Andersen wrote:
On Wednesday 24 January 2007 23:10, kanenas@hawaii.rr.com wrote:
On Wednesday 24 January 2007 20:40, Tom Patton wrote:
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!!
So If I understand that correctly you are using bridged networking in the vmware machine?
That requires the host os to alias the nic, and put it into promiscuous mode, which means it has to examine every single packet, rather than let the hardware filter out what is not destined for your machine.
Why not use Nat (vmnet8)? It works flawlessly, puts another layer between your virtual machine and the nasty-net, and is in my ever so humble opinion (*cough*) the preferred way to run virtual machines.
-- _____________________________________ John Andersen
perhaps vmnet1 or vmnet8 might be the problem, i had never thought of that. They are at least initialized at bootup, perhaps they really screw up eth0. Ok, i will remove them and try again. thanks:) -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
perhaps vmnet1 or vmnet8 might be the problem, i had never thought of that. They are at least initialized at bootup, perhaps they really screw up eth0. Ok, i will remove them and try again. thanks:)
Well, we had some very high winds lately and numerous short lived power outages. The first outage took out my smc "router" - after all it was a router!!!- and wounded the on board nic. Got a new router, if i see something fishy again I will investigate. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Hi, kanenas@hawaii.rr.com wrote:
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!!
For a more informed view you could install wireshark (formerly known as ethereal) and use it to look at your network. Having hubs, you should have no problems at all to capture anything. This should give you an overview about what is going on between your hubs and the Internet. regards Eberhard -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
kanenas@hawaii.rr.com wrote:
On Wednesday 24 January 2007 20:40, Tom Patton wrote:
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!!
One thought is that Windows doesn't back off properly after collisions or otherwise behave nice. It wouldn't be the first time MS has violated spec. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Thursday 2007-01-25 at 07:18 -0500, James Knott wrote:
One thought is that Windows doesn't back off properly after collisions or otherwise behave nice. It wouldn't be the first time MS has violated spec.
Collisions are handled directly at the ethernet layer, ie, by the hardware, no cpu or os intervention. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFFuQLhtTMYHG2NR9URAkHoAJ9ylM9vhfBg67Fz1o5ps5b8ADfStQCeJy0b RzX686guOaOmCQqQ3lD1qF0= =/i6r -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wed, 2007-01-24 at 22:10 -1000, kanenas@hawaii.rr.com wrote:
On Wednesday 24 January 2007 20:40, Tom Patton wrote:
On Wed, 2007-01-24 at 23:36 -0600, M Harris wrote:
I would recommend the Skylink 8 Port switch... relatively inexpensive, and very fast (does 10/100,. and keeps track of 100 or 10 separately) for the money for a wired network.
I'd suggest buying a gigabit switch to cover future upgrades. My 2-yr old Asus MB interface is gig, and a gig card in the kids computer was very inexpensive...and blazing fast! I have the 5-port Linksys EG005W, and it handles /10 (HP Laserjet printer) /100 (2 laptops) &/1000 (2 pc's) flawlessly. But definately toss the hub! Tom
Thanks for the suggestion, there is no question that the hardware will be changed. But I am curious why only my suse operation gets hit. Even the vmware virtual network card vmnet1, which is mapped to eth0 manages to pull and push its packets cleanly thru eth0! I think i will install a linux virtual machine before i switch, just curious if the packets see the difference!!!
Look at also turning off ipv6 and see if that makes a difference. -- Ken Schneider UNIX since 1989, linux since 1994, SuSE since 1998 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Look at also turning off ipv6 and see if that makes a difference. I would suspect ipv6 also, although James has a point regarding M$ following specs. I was thinking more along the lines of the root cause--the hub--and not the specific difference in OS behaviors... but my experience is that ipv6 is usually the cause of *apparent* hangs and delays in home networking... and
On Thursday 25 January 2007 06:46, Kenneth Schneider wrote: this is particularly noticeable on Suse because they turn ipv6 on by default even though most everyone is still only using ipv4 (very frustrating, although I do understand the reasoning behind doing so). -- Kind regards, M Harris <>< -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 25 January 2007 06:07, kanenas@hawaii.rr.com wrote:
I have a cable modem, connected to a 4 port hub for my home network. The two most active ports are the ones connected to my linux box and my son's hub. He usually runs just his xp box, maybe another machine. Occasionally he hooks up 4-5 machines and plays games over the net with his buddies, all hooked up to his hub. When he does that, my linux box essentially loses all contact with the net. Kmail, konqueror, firefox, opera etc, all freeze up in my linux box, both under suse10.1 and 10.2. The maddening thing is that if i fire up vmware and start a windoze virtual machine inside my linux, it has *no* problem accessing the net!!!! There must be an explanation for this, but I know too little to come up with it. What do the gurus say?
When you say "freeze up", do you really mean freeze, or is it just that they lose the network connection? Could it be as simple as one of the other machines connected uses the same IP address as you, so it "steals" the packets destined for your machine? The windows session in vmware would use a different IP, so it wouldn't be affected Another, less likely, possibility is that one of the machines has the same MAC address as you, which would also wreak havoc -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Anders Johansson wrote:
On Thursday 25 January 2007 06:07, kanenas@hawaii.rr.com wrote:
I have a cable modem, connected to a 4 port hub for my home network. The two most active ports are the ones connected to my linux box and my son's hub. He usually runs just his xp box, maybe another machine. Occasionally he hooks up 4-5 machines and plays games over the net with his buddies, all hooked up to his hub. When he does that, my linux box essentially loses all contact with the net. Kmail, konqueror, firefox, opera etc, all freeze up in my linux box, both under suse10.1 and 10.2. The maddening thing is that if i fire up vmware and start a windoze virtual machine inside my linux, it has *no* problem accessing the net!!!! There must be an explanation for this, but I know too little to come up with it. What do the gurus say?
When you say "freeze up", do you really mean freeze, or is it just that they lose the network connection?
Could it be as simple as one of the other machines connected uses the same IP address as you, so it "steals" the packets destined for your machine? The windows session in vmware would use a different IP, so it wouldn't be affected
Another, less likely, possibility is that one of the machines has the same MAC address as you, which would also wreak havoc if you like to find out, wireshark will be your friend
-- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 25 January 2007 05:07, kanenas@hawaii.rr.com wrote:
I have a cable modem, connected to a 4 port hub for my home network. The two most active ports are the ones connected to my linux box and my son's hub. He usually runs just his xp box, maybe another machine. Occasionally he hooks up 4-5 machines and plays games over the net with his buddies, all hooked up to his hub. When he does that, my linux box essentially loses all contact with the net. Kmail, konqueror, firefox, opera etc, all freeze up in my linux box, both under suse10.1 and 10.2. The maddening thing is that if i fire up vmware and start a windoze virtual machine inside my linux, it has *no* problem accessing the net!!!! There must be an explanation for this, but I know too little to come up with it. What do the gurus say? d
Possibly a bad NIC in the XP box. One symptom we used to have in the long distant past was that if a NIC went bad on a PC connected to a Hub, it just flooded the network. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (11)
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Anders Johansson -
Carlos E. R. -
Eberhard Roloff -
ianseeks -
James Knott -
John Andersen -
kanenas -
kanenas＠hawaii.rr.com
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Kenneth Schneider -
M Harris -
Tom Patton