I think the problem arises because the physical switch have the old MAC address on its records, mapping ServerIP->ServerFormerMAC. As soon as a new IP packet with the current IP and MAC address on it, the connectivity is resumed. I don't remember if on SLES11SP2 (my customer's case) the MAC is coded in ifcfg-eth or somewhere else. I will ask my client about it.
Mauro http://mauro.limeiratem.com - registered Linux User: 294521 Scripture is both history, and a love letter from God. 2012/5/17 Mark Post <[email protected]>: >>>> On 5/17/2012 at 11:52 AM, "Levy, Alan" <[email protected]> wrote: >> We have a problem with a linux server that when we reboot it, it takes at >> least 15 minutes to be able to ssh into. >> >> It seems, from out network traces, that when the server reboots, it has 2 >> mac addresses in the arp tables on the firewall (one from before and one >> from after the reboot). >> >> We cannot ping or ssh into the server after the reboot. Yesterday, we >> rebooted it. The network group ran traces, captured packets, etc and we found >> that if we pinged the network gateway address from this server, everything >> started working again. > > Is this a z/VM guest, or an LPAR? If a guest, is it being logged off between > the shutdown and IPL? If so, it sounds like you have LLADDR specified for > the MAC, which you should remove. Having this coded in > /etc/sysconfig/ifcfg-eth? was a bug which should have been fixed for SP2. > > > Mark Post > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
