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Date:      Tue, 11 Dec 2001 16:39:02 +0700
From:      "Tolpanov, Dmitry" <tdn@stack.ru>
To:        <freebsd-isp@FreeBSD.ORG>
Subject:   Router based on FreeBSD.
Message-ID:  <CA28026327658B478F964AD08A46D4130560CB@exch2k.stack.firm>

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Hi, all.
I've got a very complex problem so every advice is appreciated.
I've got a router on 4.3-STABLE FreeBSD. It's got hardware (in short):
- Intel Pentium III 500 MHz
- NIC 3Com 10/100 in 100baseTX <full-duplex>
- NIC 3Com 10/100 in 100baseTX <full-duplex>
- NIC 3Com 10/100 in 100baseTX <full-duplex>
- NIC 3Com 900 Combo 10baseT/UTP <full-duplex>
- NIC 3Com 900 Combo 10baseT/UTP <full-duplex>

Sometimes through this router network works slowly and it is natural
right thing. Therefore we are going to split router on two.
My questions are common for such situations:
- How trobleshoot network activity?
- How can I find bottlenecks in this situation?=20
- What counters should I examine?
- What is the maximum limits for such counters? (As I can examine
interrupts but I don't know reasonable limits. I've heard about maximum
4500 interrupts).
- What are advices for improving the configuration? (except hardware
routers)

May be there are web resources for troubleshooting such situations and
finding bottlenecks.

Thanks in advance.

Dmitry.



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<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hi, =
all.</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">I've got a very =
complex problem so every advice is appreciated.</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">I've got a router =
on 4.3-STABLE FreeBSD. It's got hardware (in short):</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- Intel Pentium =
III 500 MHz</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- NIC 3Com 10/100 =
in 100baseTX &lt;full-duplex&gt;</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- NIC 3Com 10/100 =
in 100baseTX &lt;full-duplex&gt;</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- NIC 3Com 10/100 =
in 100baseTX &lt;full-duplex&gt;</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- NIC 3Com 900 =
Combo 10baseT/UTP &lt;full-duplex&gt;</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- NIC 3Com 900 =
Combo 10baseT/UTP &lt;full-duplex&gt;</FONT></SPAN>
</P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Sometimes through =
this router network works slowly and it is natural right thing. =
Therefore we are going to split router on two.</FONT></SPAN></P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">My questions are =
common for such situations:</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- How trobleshoot =
network activity?</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- How can I find =
bottlenecks in this situation? </FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- What counters =
should I examine?</FONT></SPAN>

<BR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- What is the =
maximum limits for such counters? (As I can examine interrupts but I =
don't know reasonable limits. I've heard about maximum 4500 =
interrupts).</FONT></SPAN></P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">- What are advices =
for improving the configuration? (except hardware routers)</FONT></SPAN>
</P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">May be there are =
web resources for troubleshooting such situations and finding =
bottlenecks.</FONT></SPAN>
</P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Thanks in =
advance.</FONT></SPAN>
</P>

<P><SPAN LANG=3D"en-us"><FONT SIZE=3D2 =
FACE=3D"Arial">Dmitry.</FONT></SPAN>
</P>
<BR>

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