Date: Thu, 13 Dec 2001 09:49:06 +0100 From: Gernot Hueber <hueber@riic.at> To: CL1787@aol.com Cc: isp@FreeBSD.ORG Subject: Re: Router based on FreeBSD. Message-ID: <5.1.0.14.0.20011213093847.00aba420@postoffice.riic.at> In-Reply-To: <87.148e2405.2947f3f1@aol.com>
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Hi, You claim the 3Coms are no good choice for FBSD. I have always been very satisfied with 3Com905B devices. And a quick search did not reveal any major problems with the 3com cards. Pls, can you explain the problem in more detail or direct me to more detailed information (how to avoid impacts with STATS ...) Thank you Gernot Hueber At 18:42 11.12.2001 -0500, CL1787@aol.com wrote: >In a message dated 12/11/2001 6:57:50 AM Eastern Standard Time, tdn@stack.ru >writes: > >> I'm 99 % sure that the bottleneck is router. >> As for other hardware, router connected to 3Com 3300 XM which is devided >> on VLANs. >> The most loading on two 100 Mb interfaces (backbone interfaces). Network >> becomes slow when their loading 4 MB/s on each other (about 5500 >> interrupts on each, is not this very high), other interfaces have stable >> loading and CPU loading is about 50-30 % idle. >> >> As for routing table: >> root[xxx]:/etc/> netstat -rn | wc -l >> 638 >> >> > Tolpanov, Dmitry wrote: >> > > >> > > >> > >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> >> > >First of all, 3coms are the wrong choice in FreeBSD. One issue is that you >have 5 devices on your bus (which will seriously slow the bus by creating bus >contention), and there are also serious problems with the 3COM driver. At >minimum you'll want to disable "stats"...with a lot of traffic the stats >counters overflow regularly and cause serious overhead. At high speeds it >will actually take over the machine...comment out the line that sets >XL_CMD_STATS_ENABLE and see what happens. You dont need them...STATS is a >"neat" feature that has no place in a serious router. > >Also, the 900 is less efficient than the 900B...but I dont know by how much. > >DB > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-isp" in the body of the message Dipl.-Ing. Gernot Hueber Institut für Integrierte Schaltungen Freistädter Strasse 315/2 A-4040 Linz Tel: +43 732 2468-7118, Fax: -7126 E-mail: hueber@riic.at To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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