understanding & approach is correct?Please confirm. On Thu, Nov 10, 2016 at 11:03 AM, gowthami prakala <[email protected]> wrote:
> Hi , > > After adding vlan tag, not able to reach external network(ie ping > www.google.com failed).The following commands used, > In Host Machine, > sudo ovs-vsctl add-br br0 > sudo ovs-vsctl add-port brlan0 eth0 > sudo ifconfig eth0 0 > sudo ifconfig brlan0 192.168.1.100 netmask 255.255.255.0 > sudo ifconfig brlan0 up > sudo route add default gw 192.168.1.1 br0 > sudo ip tuntap add mode tap vport1 > sudo ip tuntap add mode tap vport2 > sudo ifconfig vport1 up > sudo ifconfig vport2 up > ping www.google.com--success > sudo ovs-vsctl add-port brlan0 vport1 > sudo ovs-vsctl add-port brlan0 vport2 > sudo ovs-vsctl show > > VM1 configured as vport1 > ping www.google.com in VM1-->success > VM2 configured as vport2 > ping www.google.com in VM2-->success > > In Host Machine, > sudo ovs-vsctl set port vport1 tag=10 > ping www.google.com in VM1-->failed > sudo ovs-vsctl set port vport2 tag=10 > ping www.google.com in VM2-->failed > > Please give suggestions to resolve above issue > > The FAQ has adviced: > > Q: I added a pair of VMs on different VLANs, like this:: > > $ ovs-vsctl add-br br0 > $ ovs-vsctl add-port br0 eth0 > $ ovs-vsctl add-port br0 tap0 tag=9 > $ ovs-vsctl add-port br0 tap1 tag=10 > > but the VMs can't access each other, the external network, or the Internet. > > A: It is to be expected that the VMs can't access each other. VLANs > are a > means to partition a network. When you configured tap0 and tap1 as > access > ports for different VLANs, you indicated that they should be isolated > from > each other. > > As for the external network and the Internet, it seems likely that the > machines you are trying to access are not on VLAN 9 (or 10) and that > the > Internet is not available on VLAN 9 (or 10). > > Q: I added a pair of VMs on the same VLAN, like this:: > > $ ovs-vsctl add-br br0 > $ ovs-vsctl add-port br0 eth0 > $ ovs-vsctl add-port br0 tap0 tag=9 > $ ovs-vsctl add-port br0 tap1 tag=9 > > The VMs can access each other, but not the external network or the > Internet. > > A: It seems likely that the machines you are trying to access in the > external network are not on VLAN 9 and that the Internet is not > available > on VLAN 9. Also, ensure VLAN 9 is set up as an allowed trunk VLAN on > the > upstream switch port to which eth0 is connected. > > > > We understood that the up-link interface should be part of the same VLAN > group as the other VLAN VMs. > > Tested following scenario's and able to get Internet access on VM1 & VM2: > > Added vlan tag to* uplink interface eth0* > $ ovs-vsctl add-br br0 > $ ovs-vsctl add-port br0 eth0 > $ ovs-vsctl add-port br0 tap0 tag=9 > $ ovs-vsctl add-port br0 tap1 tag=9 > $ ovs-vsctl add-port br0 eth0 tag=9 > > Could you please confirm the above understanding & approach is correct ? > > Kindly Suggest. >
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