Nobody having an idea? > Hi, > I am trying to fix a problem I have for about a week now. > The environment is: > --several independent servers with Centos5.4 on the latest patchlevel > (example will be server2) All of them are working properly. > --a machine with Xen installed to host some virtual machines > (xenserver1) > --domu servers on xenserver1 (crmserver1, winserver1)
> The whole network is connected with a Lancom router to a DSL line. > Some days ago I noticed that server2 was updated properly, but > xenserver1, crmserver1 and winserver were not updating the OS > properly. They seemed to be cut off the internet. I can ping from all > to all servers internally, I can ssh from all to all servers > internally and I can browse the Internet from server2 successfully > (using IP-numbers and hostnames), but xenserver1 and its domu clients > could not connect to the internet. I checked the firewalls on > xenserver, and crmserver1. They seemed to be OK and stopping them with > "etc/init.d/iptables stop" didn't solve the problem. > I can resolve hostnames: >>[r...@xenserver1 ~]# nslookup www.centos.org >>Server: 192.168.1.1 >>Address: 192.168.1.1#53 >> >>Non-authoritative answer: >>Name: www.centos.org >>Address: 72.232.194.162 > but I cannot browse neither to "elinks http://www.centos.org"; nor to > 72.232.194.162, however, I can ping www.centos.org successfully. > the network routes seem to be OK : >>[r...@xenserver1 ~]# route >>Kernel IP routing table >>Destination Gateway Genmask Flags Metric Ref Use Iface >>10.1.1.0 * 255.255.255.0 U 0 0 0 eth1 >>192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0 >>169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 >>192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 >>default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 > (eth1 is a drbd interface) >> [r...@crmserver1 ~]# route >> Kernel IP routing table >> Destination Gateway Genmask Flags Metric Ref Use Iface >> 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 >> 192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 >> default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 > Has anybody any clue where to look? best regards --- Michael Schumacher _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
