Hello,
I have the following Xen 3.0.2-2 related problem: A host system with Centos 4.4 in the dom0, guest systems are Fedora Core 5 (images from jailtime.org) mounted on LVM.
Networking on the domUs is not working, Iptables in the guests are not working either.
Each Guest system should have at least 1 dedicated public IP assigned to it, but should have the capability to have more than 1 IP address assigned to it.
There are a lot of examples for Debian in the list archives, but I can't find any resources for public IP setups for Redhat based systems.
I was given the following details by the provider: Main IP: XX.YY.33.64
Range: XX.YY.33.64 - 79 (all usable) Range: XX.YY.33.100 - 115 (all usable)
Network: XX.YY.33.0
Netmask: 255.255.255.0
Gateway: XX.YY.33.1 DNS Resolver: 65.74.153.77
Unfortunately, I seem to be missing some of the basics and have a few questions: a) Do all the public IP addressed need to be set to listen in dom0 and domU or in one of them only? I.e. if I want XX.YY.33.100 to bind to 1 domU, would I still need to listen to this IP in dom0? Would this be sufficient to bring it up? ip addr add XX.YY.33.100 dev eth0 Or would I need to add it to another interface?
b) What would be the typical broadcast address for eth0? The network address or the gateway address from the example above? My ifconfig shows Bcast:XX.YY.33.255 , but that's neither one of them. Does it matter in this case?
My current configuration: # ifconfig in dom0:
eth0 Link encap:Ethernet HWaddr 00:30:48:55:27:AA inet addr:XX.YY.33.64 Bcast:XX.YY.33.255 Mask:255.255.255.0 inet6 addr: fe80::230:48ff:fe55:27aa/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1225895 errors:0 dropped:0 overruns:0 frame:0 TX packets:4864 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:77888321 (74.2 MiB) TX bytes:630273 (615.5 KiB)
eth1 Link encap:Ethernet HWaddr 00:30:48:55:27:AB inet addr:192.168.1.43 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::230:48ff:fe55:27ab/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:569 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:65225 (63.6 KiB) TX bytes:620 (620.0 b) Interrupt:18
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:20 errors:0 dropped:0 overruns:0 frame:0 TX packets:20 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1804 (1.7 KiB) TX bytes:1804 (1.7 KiB)
peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:1231013 errors:0 dropped:0 overruns:0 frame:0 TX packets:4906 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83198745 (79.3 MiB) TX bytes:654971 (639.6 KiB) Interrupt:17
vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4866 errors:0 dropped:0 overruns:0 frame:0 TX packets:1225901 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:630613 (615.8 KiB) TX bytes:77888797 (74.2 MiB)
vif9.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:9 errors:0 dropped:0 overruns:0 frame:0 TX packets:895241 errors:0 dropped:112 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:496 (496.0 b) TX bytes:56757350 (54.1 MiB)
xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:29921 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1574921 (1.5 MiB) TX bytes:510 (510.0 b)
My domU configuration in dom0 /etc/xen/fc5.conf: kernel = "/boot/vmlinuz-2.6-xen" memory = 128 name = "fc5" dhcp = "static" vif = [ 'mac=aa:00:00:00:00:11, bridge=xenbr0, ip=XX.YY.33.100' ] ip= "XX.YY.33.100" root = "/dev/sda1 ro" netmask = "255.255.255.0" gateway = "XX.YY.33.1"
The brctl output: brctl show bridge name bridge id STP enabled interfaces xenbr0 8000.feffffffffff no peth0 vif0.0 vif9.0
My configuration in 1 domU with FC5: My ifconfig: [root@fc5_pristine ~]# ifconfig eth0 Link encap:Ethernet HWaddr AA:00:00:00:00:11 inet addr:XX.YY.33.100 Bcast:XX.YY.33.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:906298 errors:0 dropped:0 overruns:0 frame:0 TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:57458107 (54.7 MiB) TX bytes:606 (606.0 b)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
/etc/resolv.conf: nameserver 65.74.153.77
/etc/sysconfig/network: NETWORKING=yes HOSTNAME=fc5_pristine GATEWAY=XX.YY.33.1
/etc/sysconfig/networking/devices/ifcfg-eth0: TYPE=Ethernet DEVICE=eth0 BOOTPROTO=dhcp > IPADDR='XX.YY.33.100' NETMASK='255.255.255.0'
Beeing the n00b I am, I can't figure out what's wrong and I would appreciate any pointers, of course.
Sincerely Sascha Endlicher | 
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