owl-users - Antwort: TCP-Tuning

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Date: Thu, 4 May 2006 14:43:25 +0200
From: "Tobias Roppelt" <Tobias.Roppelt@...l.ssb-ag.de>
To: owl-users@...ts.openwall.com
Subject: Antwort: TCP-Tuning


You may give little more info.

"iptables -L -v" or
"ipchains -L -v" (whatever you use)
"ip route"
"arp"

"mii-tool -v <INT>"
"ifconfig <INT>"

"free -t"
"dmesg"

How is your gw connected to the local network (switch, hub, x-over)?

Tobias


|---------+----------------------------->
|         |           Bernhard Fischer  |
|         |           <bernhard@...chli.|
|         |           org>              |
|         |                             |
|         |           04.05.2006 13:07  |
|         |           Bitte antworten an|
|         |           owl-users         |
|         |                             |
|---------+----------------------------->
  >------------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                              |
  |      An: owl-users@...ts.openwall.com                                                                                        |
  |      Kopie:                                                                                                                  |
  |      Thema:    [owl-users] TCP-Tuning                                                                                        |
  >------------------------------------------------------------------------------------------------------------------------------|




Problem: while transfering data through a dual-hosted-nat gateway,
bandwidth differs about factor 5..10 instead of direct connections.

1. scenarion: single machine
- machine directly connected to the internet
- transfering 10MB of data within 10 seconds

so far, so good!

2. scenario: gateway
- two lan-interfaces (WAN: 10Mbit, LAN: 100Mbit)
- transfering 10MB of data through the gateway within 122 seconds ?!?

How do i have to configure both lan-interfaces for best throughput?
When i look at the traffic-statistiks, there is a gap of 200ms silence
followed by 300ms transmission. Why?

Any help or hints are very welcome!

Greetings
Bernhard