PPP: Does outgoing traffic slow incoming traffic?

PPP: Does outgoing traffic slow incoming traffic?

Post by Joel M. Hoffm » Wed, 01 May 1996 04:00:00

A quick question:  Does significant outgoing traffic (say, someone
FTP'ing a large file from me) slow down my incoming traffic much?
What about vice versa (I imagine it's completely symmetrical.)  Just
curious....  This is PPP over a 28.8K link, if it makes any difference.


|_|~~ Germany, Europe. 1940's ``A DISTINGUISHED speaker said that we must put
__|~| 16 Million DEAD.          our children first.   We in Bosnia wonder  if
                                we have any children left. Seven* thousand
 cnc  Bosnia, Europe. 1990's    children  have been killed  in Bosnia in  the
 cnc  HOW MANY MORE?            last three  years.   Those living, some  with
                                gray hair and eyes and hearts of old men, are
``May the world you             hardly children any more.''
  live in be the world                             - H. Silajdzic
  of your dreams.'' - Debbie Friedman                Prime Minister of Bosnia


1. Red Hat 7.2 Slow Ethernet Outgoing Traffic


I am running RH 7.2 and it's on a 10mb/sec ethernet connection
at a co-location center.

The eth0 interface card is an Intel Pro/1000 running at half-duplex.

I can receive data at 400-600 KB/sec but my outgoing IP traffic
is usually between 50-100 KB/sec. Another computer on the same
network switch sends outgoing traffic at 300-400 KB/Sec. So I
don't think it's a network congestion problem. I have ran iptraf
and although I am not sure what I am looking at, nothing seems
to unusual. There are times when the outgoing traffic is around 100KB/sec
when there is nothing I know of sending data. Is there a better way to
monitor if some type of virus is spewing data out? I downloaded and
installed Bitdefender anti-virus, but it detected nothing.

I don't know if the data sending is a software or hardware problem. I disabled
iptables, just to make sure that wasn't slowing it down. But that had no
affect. I ran up2date -u to update the latest code, but that didn't help
either. My ISP doesn't know what to do. I guess I could swap IP's with another
box in the rack, but that probably won't help.

Does anyone have any idea? This is a fairly new machine, dual 2.8GHZ Xeon with
SCSI, so the data throughput shouldn't be that slow. Any help would be appreciated?



2. apache1.3.14 and AIX 4.3

3. looking for a traffic LAN sniffer, able to archive traffic

4. Root access to E-mail

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6. help to get kppp to run in redhat6.2

7. setting an interface for up traffic and a second for down traffic

8. port 21 disabled for security reasons

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10. Slow network traffic, (connecting 2 server is slow)

11. outgoing traffic

12. Unknown outgoing udp source port 38208-38212 traffic

13. port forwarding disables outgoing traffic on same port