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#41434 - 12/10/2001 00:05 Firewall problem
jbauer
veteran

Registered: 08/05/2000
Posts: 1429
Loc: San Francisco, CA
Weird problem. I have a firewall between my DSL and my PC/Empeg/other PCs... The firewall is plugged into a 10/100 switch.

Whenever I plug in my Empeg, my firewall starts to crawl. I am using DHCP, and the Empeg seems to come up fine and everything looks fine, except my firewall gets totally hosed... Telnetting to it is like molassas and the web interface also crawls. When I unplug the Empeg, the firewall immediately springs back to life.

I'm using a NetScreen 5XP (yes, my company device).

Anyone have any ideas of what I can try?

- Jon


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#41435 - 12/10/2001 03:47 Re: Firewall problem [Re: jbauer]
pgrzelak
carpal tunnel

Registered: 15/08/2000
Posts: 4859
Loc: New Jersey, USA
The empeg is 10Mbps only. It could be hosing your switch, especially if it is set to autodetect / autonegotiate. First guess...

Paul G.
SN# 090000587 (96GB Smoke)
SN# 030103046 (10GB Blue - Emergency Spare)
_________________________
Paul Grzelak
200GB with 48MB RAM, Illuminated Buttons and Digital Outputs

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#41436 - 12/10/2001 07:35 Re: Firewall problem [Re: jbauer]
Terminator
old hand

Registered: 12/01/2000
Posts: 1079
Loc: Dallas, TX
I think the DHCP client was causing problems with some dsl/cable router boxes. Maybe its the same problem you are having. Is there any way you could sneak in a static ip?

Sean


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#41437 - 12/10/2001 13:03 Re: Firewall problem [Re: jbauer]
mcomb
pooh-bah

Registered: 31/08/1999
Posts: 1649
Loc: San Carlos, CA
Make sure the empeg is not getting the same IP address from your dhcp server as another machine. That sounds like the sort of thing that could happen if your router and empeg where fighting over an IP.

-Mike

_________________________
EmpMenuX - ext3 filesystem - Empeg iTunes integration

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#41438 - 12/10/2001 17:03 Re: Firewall problem [Re: pgrzelak]
JaBZ
addict

Registered: 08/08/2001
Posts: 452
Loc: NZ
Shouldn't matter if the EMPEG is only 10Mbps, since the switch IS a 10/100, that is whats it's designed to do Autodetect/Autonegotiate.


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#41439 - 12/10/2001 17:47 Re: Firewall problem [Re: JaBZ]
muzza
Pooh-Bah

Registered: 21/07/1999
Posts: 1765
Loc: Brisbane, Queensland, Australi...
but if it's doing broadcasts 10 mps, wouldn't that echo out each channel of the switch? That would then slow the network to 10 mps all over.

Murray
Go-Wit-Da-Fro
_________________________
-- Murray I What part of 'no' don't you understand? Is it the 'N', or the 'Zero'?

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#41440 - 12/10/2001 17:54 Re: Firewall problem [Re: muzza]
JaBZ
addict

Registered: 08/08/2001
Posts: 452
Loc: NZ
Thats depends on what type of switch it is, im running a netgear Nway 10/100 switch, each channel is independent of each other, providing true 10/100mbps per channel,
usually a switching hub works the way you describe
i.e. a 10mbps device slows all ports down to that speed.



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#41441 - 12/10/2001 17:56 Re: Firewall problem [Re: jbauer]
Jeff
new poster

Registered: 11/09/2000
Posts: 19
Loc: NY, USA
How does your traffic look? Is the network getting pounded by some large amount of traffic. If the firewall has to discard a lot of packets that could be eating up all the CPU.

Also, is the empeg set for dhcp or static? It sounds like there is some broadcast here that is killing the firewall. Empload can also search for the empeg via ethernet broadcast.

Lets narrow it down a bit more.
The empeg only has to be plugged in? plugged in and turned on? plugged in, turned on and empload running?

when exactly does the slow down occur?


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