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Date:      Wed, 25 Apr 2001 09:21:22 -0700
From:      Sean Chittenden <sean@chittenden.org>
To:        Dave VanAuken <dave@hawk-systems.com>
Cc:        freebsd-isp@FreeBSD.ORG
Subject:   Re: FreeBSD w 3C905 cannot connect to/through Cisco 3524XL switch
Message-ID:  <20010425092122.F13545@rand.tgd.net>
In-Reply-To: <DBEIKNMKGOBGNDHAAKGNEELKFBAA.dave@hawk-systems.com>; from "dave@hawk-systems.com" on Wed, Apr 25, 2001 at = 07:57:15AM
References:  <Pine.BSF.4.21.0104250844210.24730-100000@velvet.sensation.net.au> <DBEIKNMKGOBGNDHAAKGNEELKFBAA.dave@hawk-systems.com>

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On Wed, Apr 25, 2001 at 07:57:15AM -0400, Dave VanAuken wrote:
> router(also cisco) speaks to switch just fine Win2K workstations
> using 3C905 cards speak to switch just fine FreeBSD servers using
> 3C905 cards have problems...

	Autonegotiation of network speeds and duplexes is horribly
unreliable.  I have administered clusters of FreeBSD systems that plug
into 6006's and 3524's and there wasn't rhym or reason as to which
boxes autonegotiated correctly.  100% of the time, with maybe the
exception of a workgroup environment, you want to manually set it's
speed to 100 and duplex to full.

Cisco:

in if-conf:
speed 100
duplex full

on server in /etc/rc.conf:
ifconfig_foo0=3D".... media 100baseTX mediaopt full-duplex"


> ping and other network utils respond with "host is down"

	That's because the switch doesn't see the computer as up.


> am wondering if it is not picking up the switch during boot
> or something.

	Maybe, but auto-neg is bad in every way shape and form and was
designed for workgroup environments, not servers.  If a server doesn't
negotiate at 100 full, then I've got a problem and I want the server
to disappear from the network.


> using unroutables, here is what the network looks like:
> Network 192.168.1.0/26
> Router 192.168.1.1 255.255.255.192  WAN (upstream IP addr)
> Switch 192.168.1.5 255.255.255.192  Network 192.168.1.1
> Workstations 192.168.1.20-24 255.255.255.192  Gateway
> 192.168.1.1
> FreeBSD1 192.168.1.10 255.255.255.192  Gateway Router
> 192.168.1.1
> 	aliased 192.168.1.15-17 255.255.255.192
> FreeBSD2 192.168.1.11 255.255.255.192  Gateway Router
> 192.168.1.1

	This won't matter, the 3524XL doesn't, by and large, see layer
three traffic.  They're great switches though, I've only had one
problem a cluster of 5 of them in over a year of operation.  -sc


--=20
Sean Chittenden

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