Dear All, We faced with the same problem described by the original post from *Greg Woods* woods at ucar.edu <lvs-users%40linuxvirtualserver.org?Subject=Re:%20Cisco%20routers%20dynamic%20ARP%20caching&In-Reply-To=%3C200208021715.g72HFQD11154%40mailman.ucar.edu%3E>, and the short answer is yes, the Cisco Router makes dynamic arp caching, in our case the Cisco Router are using the arp request sent by the Directors machine to update the mac address of the vip in the router arp table, this were happening because the arp request was being sent with VIP as the source address of the arp request packet.
To solve this issue we change the net.ipv4.conf.all.arp_announce and net.ipv4.conf.bond0.arp_announce (bond0 is the interface in use) parameter to value 2 in the /etc/sysctl.conf configuration file [1], this configuration change the behaviour of all arp request sent by the machine, the source ip address in the arp request is sent as the RIP instead of VIP, in our case this prevent the Cisco Router to update VIP arp table entry. I knew that this post is really old, and probably *Greg Woods* woods at ucar.edu<lvs-users%40linuxvirtualserver.org?Subject=Re:%20Cisco%20routers%20dynamic%20ARP%20caching&In-Reply-To=%3C200208021715.g72HFQD11154%40mailman.ucar.edu%3E>already solved his problem, i am only sending this post to share our experience with others LVS users. References [1] - http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.arp_problem.html#2_6_arp_announce Best regards, -- Antonio Anderson M. Souza Project Manager Voice Technology Rua: Libero Badaró, 293 Cj 30D - 30o. andar CEP: 01009-907 [EMAIL PROTECTED] phone: +55 11 3588-0188 mobile: +55 11 8224-2756 -- Antonio Anderson M. Souza Project Manager Voice Technology Rua: Libero Badaró, 293 Cj 30D - 30o. andar CEP: 01009-907 [EMAIL PROTECTED] phone: +55 11 3588-0188 mobile: +55 11 8224-2756 _______________________________________________ LinuxVirtualServer.org mailing list - [email protected] Send requests to [EMAIL PROTECTED] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
