IP address on virtual bridge?
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I would like to configure a static IP address on the virtual machine. This interface should be connected to one of the host physical interfaces via a bridge.
If I have understood the documentation correct, the physical interface attached to the bridge has no IP address. Only the Interface in the VM has to be configured with an IP address and must be on the same subnet like the default router which is a physical router connected behind a layer 2 infrastructure.
All the configuration examples shows an IP address configured on a virtual bridge. Why?
kvm
asked Jan 20 '14 at 17:21
fgeldfgeld
113
add a comment |
I would like to configure a static IP address on the virtual machine. This interface should be connected to one of the host physical interfaces via a bridge.
If I have understood the documentation correct, the physical interface attached to the bridge has no IP address. Only the Interface in the VM has to be configured with an IP address and must be on the same subnet like the default router which is a physical router connected behind a layer 2 infrastructure.
All the configuration examples shows an IP address configured on a virtual bridge. Why?
kvm
asked Jan 20 '14 at 17:21
fgeldfgeld
113
add a comment |
I would like to configure a static IP address on the virtual machine. This interface should be connected to one of the host physical interfaces via a bridge.
If I have understood the documentation correct, the physical interface attached to the bridge has no IP address. Only the Interface in the VM has to be configured with an IP address and must be on the same subnet like the default router which is a physical router connected behind a layer 2 infrastructure.
All the configuration examples shows an IP address configured on a virtual bridge. Why?
kvm
asked Jan 20 '14 at 17:21
fgeldfgeld
113
I would like to configure a static IP address on the virtual machine. This interface should be connected to one of the host physical interfaces via a bridge.
If I have understood the documentation correct, the physical interface attached to the bridge has no IP address. Only the Interface in the VM has to be configured with an IP address and must be on the same subnet like the default router which is a physical router connected behind a layer 2 infrastructure.
All the configuration examples shows an IP address configured on a virtual bridge. Why?
kvm
kvm
asked Jan 20 '14 at 17:21
fgeldfgeld
113
asked Jan 20 '14 at 17:21
fgeldfgeld
113
asked Jan 20 '14 at 17:21
fgeldfgeld
113
asked Jan 20 '14 at 17:21
fgeldfgeld
113
asked Jan 20 '14 at 17:21
fgeldfgeld
113
113
add a comment |
add a comment |
1 Answer
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If I'm interpreting your question wrong, just let me know and I will edit to suit
It is important to keep the distinction between host and guest clear, so I will try and do this with a hypothetical. I have a host (let's call it kvm1) with one physical NIC (eth0). That host is running one guest (let's creatively call it guest) which has been configured with one NIC. From inside guest, this NIC appears as eth1 (for clarity). If you want eth1 to have a static IP, all you need to do is add the IP using the /etc/network/interfaces file on guest, for example.
Now for the host configuration on kvm1: I'm going to assume you're using /etc/network/interfaces to configure host networking and that you have created a br0 interface and added eth0 to it (whether using brctl or virt-manager or virsh). Now, as long as the guest's VM configuration has its single NIC set up to be attached to br0, you should be good to go.
If you're using virsh/virt-manager, you can try running brctl show from a terminal to check. You should have a vmnetX interface showing up as a member of br0, and your guest is now directly bridged to the physical interface eth0. Now, connect eth0 to the nearest Ethernet switch in your LAN subnet, and guest should retain its static IP and be accessible from the rest of the network.
I'm hoping that made sense.
answered Jan 22 '14 at 1:23
agc93agc93
645313
add a comment |
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1 Answer
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active
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1 Answer
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active
oldest
votes
active
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active
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If I'm interpreting your question wrong, just let me know and I will edit to suit
It is important to keep the distinction between host and guest clear, so I will try and do this with a hypothetical. I have a host (let's call it kvm1) with one physical NIC (eth0). That host is running one guest (let's creatively call it guest) which has been configured with one NIC. From inside guest, this NIC appears as eth1 (for clarity). If you want eth1 to have a static IP, all you need to do is add the IP using the /etc/network/interfaces file on guest, for example.
Now for the host configuration on kvm1: I'm going to assume you're using /etc/network/interfaces to configure host networking and that you have created a br0 interface and added eth0 to it (whether using brctl or virt-manager or virsh). Now, as long as the guest's VM configuration has its single NIC set up to be attached to br0, you should be good to go.
If you're using virsh/virt-manager, you can try running brctl show from a terminal to check. You should have a vmnetX interface showing up as a member of br0, and your guest is now directly bridged to the physical interface eth0. Now, connect eth0 to the nearest Ethernet switch in your LAN subnet, and guest should retain its static IP and be accessible from the rest of the network.
I'm hoping that made sense.
answered Jan 22 '14 at 1:23
agc93agc93
645313
add a comment |
If I'm interpreting your question wrong, just let me know and I will edit to suit
It is important to keep the distinction between host and guest clear, so I will try and do this with a hypothetical. I have a host (let's call it kvm1) with one physical NIC (eth0). That host is running one guest (let's creatively call it guest) which has been configured with one NIC. From inside guest, this NIC appears as eth1 (for clarity). If you want eth1 to have a static IP, all you need to do is add the IP using the /etc/network/interfaces file on guest, for example.
Now for the host configuration on kvm1: I'm going to assume you're using /etc/network/interfaces to configure host networking and that you have created a br0 interface and added eth0 to it (whether using brctl or virt-manager or virsh). Now, as long as the guest's VM configuration has its single NIC set up to be attached to br0, you should be good to go.
If you're using virsh/virt-manager, you can try running brctl show from a terminal to check. You should have a vmnetX interface showing up as a member of br0, and your guest is now directly bridged to the physical interface eth0. Now, connect eth0 to the nearest Ethernet switch in your LAN subnet, and guest should retain its static IP and be accessible from the rest of the network.
I'm hoping that made sense.
answered Jan 22 '14 at 1:23
agc93agc93
645313
add a comment |
If I'm interpreting your question wrong, just let me know and I will edit to suit
It is important to keep the distinction between host and guest clear, so I will try and do this with a hypothetical. I have a host (let's call it kvm1) with one physical NIC (eth0). That host is running one guest (let's creatively call it guest) which has been configured with one NIC. From inside guest, this NIC appears as eth1 (for clarity). If you want eth1 to have a static IP, all you need to do is add the IP using the /etc/network/interfaces file on guest, for example.
Now for the host configuration on kvm1: I'm going to assume you're using /etc/network/interfaces to configure host networking and that you have created a br0 interface and added eth0 to it (whether using brctl or virt-manager or virsh). Now, as long as the guest's VM configuration has its single NIC set up to be attached to br0, you should be good to go.
If you're using virsh/virt-manager, you can try running brctl show from a terminal to check. You should have a vmnetX interface showing up as a member of br0, and your guest is now directly bridged to the physical interface eth0. Now, connect eth0 to the nearest Ethernet switch in your LAN subnet, and guest should retain its static IP and be accessible from the rest of the network.
I'm hoping that made sense.
answered Jan 22 '14 at 1:23
agc93agc93
645313
If I'm interpreting your question wrong, just let me know and I will edit to suit
It is important to keep the distinction between host and guest clear, so I will try and do this with a hypothetical. I have a host (let's call it kvm1) with one physical NIC (eth0). That host is running one guest (let's creatively call it guest) which has been configured with one NIC. From inside guest, this NIC appears as eth1 (for clarity). If you want eth1 to have a static IP, all you need to do is add the IP using the /etc/network/interfaces file on guest, for example.
Now for the host configuration on kvm1: I'm going to assume you're using /etc/network/interfaces to configure host networking and that you have created a br0 interface and added eth0 to it (whether using brctl or virt-manager or virsh). Now, as long as the guest's VM configuration has its single NIC set up to be attached to br0, you should be good to go.
If you're using virsh/virt-manager, you can try running brctl show from a terminal to check. You should have a vmnetX interface showing up as a member of br0, and your guest is now directly bridged to the physical interface eth0. Now, connect eth0 to the nearest Ethernet switch in your LAN subnet, and guest should retain its static IP and be accessible from the rest of the network.
I'm hoping that made sense.
answered Jan 22 '14 at 1:23
agc93agc93
645313
answered Jan 22 '14 at 1:23
agc93agc93
645313
answered Jan 22 '14 at 1:23
agc93agc93
645313
answered Jan 22 '14 at 1:23
agc93agc93
645313
645313
add a comment |
add a comment |
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