From 8d45e9383bccf0799883a3b7f627a32a14a76a46 Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Thu, 29 Nov 2012 09:12:10 -0800 Subject: [PATCH] FAQ: Add Q&A to emphasize that VLANs partition a network. A few users don't seem to understand this. Signed-off-by: Ben Pfaff --- FAQ | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/FAQ b/FAQ index 75eab993a..9bb9ffa8a 100644 --- a/FAQ +++ b/FAQ @@ -569,6 +569,25 @@ A: It's possible that you have the VLAN configured on your physical equally well. Refer to the documentation for the Port table in ovs-vswitchd.conf.db(5) for more information. +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: Can I configure an IP address on a VLAN? A: Yes. Use an "internal port" configured as an access port. For -- 2.47.0