host and guest both centos 5.5 network is 192.168.62.40 host is setup as follows
[root@cloud2 ~]# ifconfig br0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet addr:192.168.62.199 Bcast:192.168.63.255 Mask:255.255.254.0 inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1705488 errors:0 dropped:0 overruns:0 frame:0 TX packets:1130086 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1103112199 (1.0 GiB) TX bytes:2544941783 (2.3 GiB)
eth0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1714601 errors:0 dropped:0 overruns:0 frame:0 TX packets:2243903 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1134903389 (1.0 GiB) TX bytes:2627513407 (2.4 GiB) Interrupt:90 Memory:c8000000-c8012800
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:10396 errors:0 dropped:0 overruns:0 frame:0 TX packets:10396 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8188566 (7.8 MiB) TX bytes:8188566 (7.8 MiB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.62.1 Bcast:192.168.62.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:222 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:16218 (15.8 KiB)
vnet0 Link encap:Ethernet HWaddr 9A:B0:F1:FE:9F:1C inet6 addr: fe80::98b0:f1ff:fefe:9f1c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:128 errors:0 dropped:0 overruns:0 frame:0 TX packets:1504 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:18288 (17.8 KiB) TX bytes:105343 (102.8 KiB)
[root@cloud2 network-scripts]# cat ifcfg-eth0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet DEVICE=eth0 #BOOTPROTO=static #BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 #IPADDR=192.168.62.22 #NETMASK=255.255.254.0 #NETWORK=192.168.62.0 ONBOOT=yes BRIDGE=br0
[root@cloud2 network-scripts]# cat ifcfg-br0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet TYPE=Bridge DEVICE=br0 #BOOTPROTO=static BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 IPADDR=192.168.62.199 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes
KVM image is as follows [root@www ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 # Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ DEVICE=eth0 BOOTPROTO=none BROADCAST=192.168.63.255 HWADDR=54:52:00:04:00:1d IPADDR=192.168.62.14 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes GATEWAY=192.168.62.40 TYPE=Ethernet
i can access the kvm image from other hosts on the network , but the kvm image can not access anything except for the gateway
what am i doing wrong here
thanx
I never work with that subnet so this may be a dumb thing to say, but isn't the 255.255.254.0 mask giving you 510 hosts, so the broadcast address should be higher than 255?
The guest is using br0?
-----Original Message----- From: centos-virt-bounces@centos.org [mailto:centos-virt- bounces@centos.org] On Behalf Of Chaim Rieger Sent: Tuesday, July 13, 2010 2:51 PM To: centos-virt@centos.org Subject: [CentOS-virt] incoming works out does not (prolly a newbie question)
host and guest both centos 5.5 network is 192.168.62.40 host is setup as follows
[root@cloud2 ~]# ifconfig br0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet addr:192.168.62.199 Bcast:192.168.63.255
Mask:255.255.254.0
inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1705488 errors:0 dropped:0 overruns:0 frame:0 TX packets:1130086 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1103112199 (1.0 GiB) TX bytes:2544941783 (2.3 GiB)eth0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9 inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1714601 errors:0 dropped:0 overruns:0 frame:0 TX packets:2243903 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1134903389 (1.0 GiB) TX bytes:2627513407 (2.4 GiB) Interrupt:90 Memory:c8000000-c8012800
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:10396 errors:0 dropped:0 overruns:0 frame:0 TX packets:10396 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8188566 (7.8 MiB) TX bytes:8188566 (7.8 MiB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.62.1 Bcast:192.168.62.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:222 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:16218 (15.8 KiB)
vnet0 Link encap:Ethernet HWaddr 9A:B0:F1:FE:9F:1C inet6 addr: fe80::98b0:f1ff:fefe:9f1c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:128 errors:0 dropped:0 overruns:0 frame:0 TX packets:1504 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:18288 (17.8 KiB) TX bytes:105343 (102.8 KiB)
[root@cloud2 network-scripts]# cat ifcfg-eth0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet DEVICE=eth0 #BOOTPROTO=static #BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 #IPADDR=192.168.62.22 #NETMASK=255.255.254.0 #NETWORK=192.168.62.0 ONBOOT=yes BRIDGE=br0
[root@cloud2 network-scripts]# cat ifcfg-br0 # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet TYPE=Bridge DEVICE=br0 #BOOTPROTO=static BROADCAST=192.168.63.255 #HWADDR=00:1A:64:12:10:D9 IPADDR=192.168.62.199 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes
KVM image is as follows [root@www ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 # Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ DEVICE=eth0 BOOTPROTO=none BROADCAST=192.168.63.255 HWADDR=54:52:00:04:00:1d IPADDR=192.168.62.14 NETMASK=255.255.254.0 NETWORK=192.168.62.0 ONBOOT=yes GATEWAY=192.168.62.40 TYPE=Ethernet
i can access the kvm image from other hosts on the network , but the kvm image can not access anything except for the gateway
what am i doing wrong here
thanx _______________________________________________ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
heres the config for the guest
<domain type='kvm' id='3'> <name>www</name> <uuid>cf0351ad-2df9-1f83-d668-3901543109ef</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel5.4.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' cache='none'/> <source file='/cloud/disks/www.img'/> <target dev='hda' bus='ide'/> </disk> <disk type='file' device='cdrom'> <target dev='hdc' bus='ide'/> <readonly/> </disk> <interface type='bridge'> <mac address='54:52:00:04:00:1d'/> <source bridge='br0'/> <target dev='vnet0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' keymap='en-us'/> </devices> </domain>
Well, on my 192.168.20.x mask 255.255.255.0 network, one server's working config files are:
Ifcgf-br1: DEVICE=br1 TYPE=Bridge BOOTPROTO=none ONBOOT=yes
Ifcgf-br2: DEVICE=br2 TYPE=Bridge BOOTPROTO=none ONBOOT=yes
ifcfg-eth0: # Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ DEVICE=eth0 ONBOOT=yes HWADDR=xx:xx:xx:xx:xx:xx BOOTPROTO=none BROADCAST=192.168.20.255 IPADDR=192.168.20.30 NETMASK=255.255.255.0 NETWORK=192.168.20.0 GATEWAY=192.168.20.1 TYPE=Ethernet
ifcfg-eth1: # Intel Corporation 82541PI Gigabit Ethernet Controller DEVICE=eth1 BOOTPROTO=none HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br1 TYPE=Ethernet
ifcfg-eth2: # 3Com Corporation 3c905C-TX/TX-M [Tornado] DEVICE=eth2 BOOTPROTO=none HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br2 TYPE=Ethernet
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Chaim Rieger -
compdoc