for testing only;
3 x standard computers with 3 network cards each
1 x qnap ts269 pro (http://www.qnap.com
- supports ISCSI and MPIO [two interfaces])
2 x simple gigabit switches
Server A nic 1 is going to switch 1 (172.16.10.1 - 255.255.255.0)
Server A nic 2 is going to switch 2 (172.16.11.1 - 255.255.255.0)
Server A nic 3 is going to switch 3
(for management purposes only) [192.168.168.2]
Server B nic 1 is going to switch 1 (172.16.10.2 - 255.255.255.0)
Server B nic 2 is going to switch 2 (172.16.11.2 - 255.255.255.0)
Server B nic 3 is going to switch 3
(for management purposes only [192.168.168.3])
Server C nic 1 is going to switch 3
(for AD management and the above) [192.168.168.1]
QNAP nic 1 is going to switch 1 (172.16.10.10 - 255.255.255.0)
QNAP nic 2 is going to switch 2 (172.16.11.10 - 255.255.255.0)
The question I wanted to ask was in all diagrams or images on the internet not a single one shows a link between the switches. If we remove the link between switch 1 and switch 2 communication is not possible. Doesn't a link need to be both switches?
So removing the link from nic 1 on Server A means it cant get to nic 1on Server B.
[thats fine i get that bit] however it should still be able to see nic 2 on Server B on switch 2 using nic 2 on itself but it doesn't???
I mean should node A be able to ping both IP addresses on node b even if one of its links fails? doesn't the traffic just go out over its other nic to the second switch?
Secondly, how do we configure both nic's on the qnap. at the moment all the images on the net show one link to the "storage array". Our storage array has two network cards we would like to use as a redundant path should one of the interfaces get disconnected.
How does one configure that?
Sorry, I'm just new to all of this?
p.s. see attached image for out layout