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=20 >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. >> =20 >> As for routing table: >> root[xxx]:/etc/> netstat -rn | wc -l >> 638 >> =20 >> > Tolpanov, Dmitry wrote: >> > >=20 >> > >=20 >> > >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=20 >> > (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> >> =20 > >First of all, 3coms are the wrong choice in FreeBSD. One issue is that you= =20 >have 5 devices on your bus (which will seriously slow the bus by creating= bus=20 >contention), and there are also serious problems with the 3COM driver. At= =20 >minimum you'll want to disable "stats"...with a lot of traffic the stats=20 >counters overflow regularly and cause serious overhead. At high speeds it= =20 >will actually take over the machine...comment out the line that sets=20 >XL_CMD_STATS_ENABLE and see what happens. You dont need them...STATS is a= =20 >"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 f=FCr Integrierte Schaltungen Freist=E4dter 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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