Date: Fri, 11 Jan 2002 18:22:51 -0000 From: "Martyn Hill" <martyn_hill@lineone.net> To: "FreeBSD-questions" <freebsd-questions@freebsd.org> Subject: Netgear Access Point and FreeBSD 4.4-STABLE - ARP conflict Message-ID: <005701c19acc$fb420ba0$f401000a@stjames.net>
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Dear all Through desperation and lack of response from Netgear, I re-submit this query/cry for help... Just to re-cap, our school FreeBSD box acting as a gateway to an ADSL router periodically 'falls off' the network. A second FreeBSD box (sjserver) reports the following error: Jan 10 16:29:51 sjserver /kernel: arp: 10.0.0.200 moved from 00:30:ab:0a:df:4f to 00:a0:c9:69:7c:2f on fxp0 Jan 10 16:50:06 sjserver /kernel: arp: 10.0.0.200 moved from 00:a0:c9:69:7c:2f to 00:30:ab:0a:df:4f on fxp0 Jan 10 16:59:33 sjserver /kernel: arp: 10.0.0.200 moved from 00:30:ab:0a:df:4f to 00:a0:c9:69:7c:2f on fxp0 The IP 10.0.0.200 (really) belongs to the FreeBSD gateway (MAC starting 00:0a), but its ARP table entry is grabbed by either of two Access Points (in this case, MAC starting 00:30), IP 10.0.2.2. I include my original submission below. Any guidance would be invaluable... Our new school network is running 2 FreeBSD boxes at 4.4Stable - one as a gateway to our ADSL link and another as an SMB fileserver/squid proxy. Both boxes use Intel Pro 10/100B NICs - the gateway having 2 identical cards installed on different sub-nets (1 internal, 1 external as you'ld imagine.) Having purchased a couple of Netgear ME102 Wireless Access Points to extend the network infrastructure (via Allied Telesyn 10/100 switch), we experience consistent difficulties when either of the 2 APs are put on-line. In either case, the ARP tables get in a muddle (my language exposes my lack of understanding) and the MAC address of the AP is swapped with that of the Intel NIC in the gateway FreeBSD box (internal subnet.) This shows up as lack of connection to the gateway box (that hosts DHCP and named services) and can be seen when trying to telnet from the other FreeBSD box into the gateway - the ARP references that pop-up indicate that the IP address is oscilating between the MAC address for the AP and the gateway box. The AP has a fixed IP address, set through a USB connection from a Windows client and has a very distinct MAC address from anything else on the network. Our wireless network is thus practically useless until I can resolve this (inbetween teaching, system administration and IT co-ordination...) Any advice would be welcome! Best Regards Martyn Hill ICT Teacher and IT Co-ordinator St James Independent School London To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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