From 3c8399a2b8a4cb90173a00d29dcd2658175733d9 Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Wed, 24 Apr 2013 11:47:36 -0700 Subject: [PATCH] FAQ: Explain why VMs on a VLAN can't access the Internet. Signed-off-by: Ben Pfaff --- FAQ | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/FAQ b/FAQ index a8e377237..c266b7bfb 100644 --- a/FAQ +++ b/FAQ @@ -816,6 +816,21 @@ A: It is to be expected that the VMs can't access each other. VLANs 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. + Q: Can I configure an IP address on a VLAN? A: Yes. Use an "internal port" configured as an access port. For -- 2.43.0