From owner-freebsd-questions@FreeBSD.ORG Thu Apr 24 12:16:44 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6A4A337B401 for ; Thu, 24 Apr 2003 12:16:44 -0700 (PDT) Received: from rotini.customfilmeffects.com (frozboz.org [66.134.82.178]) by mx1.FreeBSD.org (Postfix) with ESMTP id D4F5243F75 for ; Thu, 24 Apr 2003 12:16:43 -0700 (PDT) (envelope-from david@customfilmeffects.com) Received: from [192.168.1.32] (lan32 [192.168.1.32])h3OJ1Rd06250 for ; Thu, 24 Apr 2003 12:01:27 -0700 From: David Smithson To: questions@freebsd.org Content-Type: text/plain Organization: Custom Film Effects Message-Id: <1051211883.21805.75.camel@blargh.customfilmeffects.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2- Date: 24 Apr 2003 12:18:03 -0700 Content-Transfer-Encoding: 7bit Subject: help with ethernet load-balancing (em) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: david@customfilmeffects.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Apr 2003 19:16:44 -0000 Hi. I have a mission-critical file-server with two on-board Intel Gig-copper NICs, em0 and em1, configured as follows: em0: flags=8843 mtu 1500 options=3 inet 192.168.0.97 netmask 0xffffff00 broadcast 192.168.0.255 inet6 fe80::230:48ff:fe27:7868%em0 prefixlen 64 scopeid 0x1 ether 00:30:48:27:78:68 media: Ethernet autoselect (1000baseTX ) status: active em1: flags=8843 mtu 1500 options=3 inet 192.168.0.98 netmask 0xffffffff broadcast 192.168.0.98 inet6 fe80::230:48ff:fe27:7869%em1 prefixlen 64 scopeid 0x2 ether 00:30:48:27:78:69 media: Ethernet autoselect (1000baseTX ) status: active I would like network load-balancing to happen on this server and would appreciate your help in this matter. So far, most network clients attach to em0. arp -a returns: ? (192.168.0.1) at 00:07:e9:0c:52:6d on em0 [ethernet] ? (192.168.0.4) at 00:07:e9:0a:22:6a on em0 [ethernet] ? (192.168.0.5) at 00:04:76:f5:88:9f on em0 [ethernet] ? (192.168.0.6) at 00:04:76:e6:15:62 on em0 [ethernet] ? (192.168.0.8) at 00:04:5a:59:65:1f on em0 [ethernet] ? (192.168.0.15) at 00:04:5a:59:54:e7 on em0 [ethernet] ? (192.168.0.16) at 00:04:5a:59:7a:dd on em0 [ethernet] ? (192.168.0.24) at 00:04:5a:59:64:f9 on em0 [ethernet] ? (192.168.0.25) at 00:04:5a:59:54:97 on em0 [ethernet] ? (192.168.0.26) at 00:d0:b7:9e:ad:d0 on em0 [ethernet] ? (192.168.0.32) at 00:01:02:83:de:f0 on em0 [ethernet] ? (192.168.0.33) at 00:40:f4:21:c2:d2 on em0 [ethernet] ? (192.168.0.97) at 00:30:48:27:78:68 on em0 permanent [ethernet] ? (192.168.0.98) at 00:30:48:27:78:69 on em1 permanent [ethernet] ? (192.168.0.247) at 00:e0:81:02:79:da on em0 [ethernet] ? (192.168.0.248) at 00:e0:81:02:89:90 on em0 [ethernet] ? (192.168.0.249) at 00:e0:81:02:87:b3 on em0 [ethernet] ? (192.168.0.250) at 00:e0:81:02:64:6f on em0 [ethernet] ? (192.168.0.251) at 00:e0:81:02:16:df on em0 [ethernet] ? (192.168.0.252) at 00:e0:81:02:16:e1 on em0 [ethernet] ? (192.168.0.253) at 00:d0:b7:b7:3b:3d on em0 [ethernet] ? (192.168.0.255) at ff:ff:ff:ff:ff:ff on em0 permanent [ethernet] Sorry about the wrap, but as you can see, all clients are attached to em0. If I do arp -a at the NT shell prompt on the Win2k Pro clients, I get: 192.168.0.97 00:30:48:27:78:68 dynamic My internal DNS server has round-robin turned on and has entries for both 192.168.0.97 and 192.168.0.98. However, clients consistently resolve name-to-IP 192.168.0.97. What am I missing? Can someone point me to some useful information regarding load-balancing? What is the mechanism here? Thanks for your time. -- David Smithson