I am trying to set up a server with two NICs as a hypervisor. I would like to use the two interfaces to separate management and guest traffic, as recommended by the CloudStack installation guide. This server is connected to a managed switch, which is connected to a hardware firewall, both of which are set up with tagged VLANs. Some of the ports on the switch are designated as VLAN 6 and some are VLAN 7. I've confirmed the VLANs are set up correctly by configuring eth0 and eth1 (one at a time) with the appropriate IP address, netmask, and gateway.
However, the difficulty arises when I try to configure both interfaces simultaneously. The return traffic tends to go out whichever interface is associated with the default gateway, a typical issue when using multiple network interfaces. I've followed numerous guides, which all basically say the same thing: Don't set a default gateway; use iproute2 to control the flow of traffic with route-eth0, rule-eth0, and rt_tables. I've tried setting this up numerous times to no avail, probably because the guides I'm reading don't involve VLANs. Add to that the the cloudbr0 and cloudbr1 bridges that CloudStack requires and now I'm really confused as to how to set up the network. I can't be the first person to have set up CloudStack this way; it sounds pretty common. Can someone explain to me the correct way to configure these interfaces? Here is my network information: VLAN 6 (management) 192.168.101.0/24 gateway: 192.168.101.1 VLAN 7 (guest) 192.168.102.0/24 gateway: 192.168.102.1 current hypervisor settings: eth0: 192.168.101.4 eth1: 192.168.102.4 current management server settings (this is a separate machine): p4p1: 192.168.101.3
