[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Cannot ping DomU from Dom0 / cannot ping same site from two DomUs at the same time
Hello! I have two problems. One is, that I cannot ping a DomU from Dom0 (or any other host in my local network) and the second one is, that I cannot ping the same site (eg. www.suse.com) from two DomU's at the same time. I have a fresh installation of openSuse 11.0 with Kernel 2.6.25.20-0.1-xen and my box has two physical ethernet cards. As far as I have investigated, eth0 is the one which is grabbed by the Xen-scripts, als you can see here: # brctl show bridge name bridge id STP enabled interfaces eth0 8000.003048d69cfa no peth0 tap0 vif7.0 The file xend-config.sxp is unmodified, I filter here all those comments: # egrep -v "^$|^#" xend-config.sxp (xen-api-server ((unix none))) (xend-unix-server yes) (xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$') (network-script network-bridge) (vif-script vif-bridge) (dom0-min-mem 512) (dom0-cpus 0) (vncpasswd '') ifconfig shows these one, while one DomU is running. # ifconfig -a eth0 Link encap:Ethernet HWaddr 00:30:48:D6:9C:FA inet addr:192.168.222.16 Bcast:192.168.222.255 Mask:255.255.255.0 inet6 addr: fe80::230:48ff:fed6:9cfa/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1032642 errors:0 dropped:0 overruns:0 frame:0 TX packets:668426 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1101565708 (1050.5 Mb) TX bytes:83483260 (79.6 Mb) eth1 Link encap:Ethernet HWaddr 00:30:48:D6:9C:FB inet addr:192.168.224.1 Bcast:192.168.224.255 Mask:255.255.255.0 inet6 addr: fe80::230:48ff:fed6:9cfb/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2093348 errors:0 dropped:0 overruns:0 frame:0 TX packets:2372864 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:177871101 (169.6 Mb) TX bytes:7055283604 (6728.4 Mb) Interrupt:20 Base address:0xe000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:329651 errors:0 dropped:0 overruns:0 frame:0 TX packets:329651 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1269637544 (1210.8 Mb) TX bytes:1269637544 (1210.8 Mb) peth0 Link encap:Ethernet HWaddr 00:30:48:D6:9C:FA inet6 addr: fe80::230:48ff:fed6:9cfa/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:1322260 errors:0 dropped:0 overruns:0 frame:0 TX packets:739433 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1319675729 (1258.5 Mb) TX bytes:92076405 (87.8 Mb) Interrupt:20 Base address:0xa000 tap0 Link encap:Ethernet HWaddr 00:FF:C5:E9:26:66 inet6 addr: fe80::2ff:c5ff:fee9:2666/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:216 errors:0 dropped:0 overruns:0 frame:0 TX packets:1313 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:40640 (39.6 Kb) TX bytes:96970 (94.6 Kb) vif7.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:1497 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) It also seems, that all those various arp-addresses are set up fine. 00:16:3e:1f:0b:3c is the one I see inside the DomU # brctl showmacs eth0 port no mac addr is local? ageing timer 1 00:03:c5:01:4d:52 no 0.29 2 00:16:3e:1f:0b:3c no 109.27 1 00:17:f2:c4:a0:ca no 8.32 1 00:30:48:d6:9c:fa yes 0.00 1 00:50:ba:70:05:87 no 193.89 1 00:e0:7d:79:a6:c1 no 0.92 2 00:ff:c5:e9:26:66 yes 0.00 1 08:00:20:0b:cf:35 no 0.92 3 fe:ff:ff:ff:ff:ff yes 0.00 Now when I do a ping from Dom0 to DomU I see the following tcpdump: 09:45:43.191701 arp who-has 192.168.222.102 tell 192.168.222.16 and no answer within a few seconds. So it seems that something with arp is not fine. Any ideas what to do next? ####### The other problem which may be related is a little bit more strange. I have set up two DomU's, one with Vista-32bit and one with Vista-64bit. Both have differend IP-addresses and different MAC-addresses. I can ping whatever host (in my LAN or in the internet) with both DomU's. No problem. I can also ping any host, even on a different subnet in my LAN from both DomU's at the same time. But when I try to ping www.suse.com (or any other host in the internet) at the same time only that DomU pings successfully where I started the ping first, the other DomU fails. If one DomU pings www.slashdot.org an other other pings www.suse.com both pings work fine. Ping also works fine, when I ping any other host in my LAN from both DomU's. This one puzzles mee too. I crosschecked and can ping from any other pair of my machines to the outside without problems. Thanks Wolfgang _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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