Hi guys, a quick question regarding our proposed network design
Environment:
Switches: Sg30028 (right part) and SG30028P (left part)
DC :domain controller
Firewall Fortigate 60C
STP mode: MTP
Location: Office floor: switches are in the samerack.
Basically what is going to happen (according to digram and proper configuration) is that in event that SW1, or SW6 fails there will be no interruption of service for clients.
Now, my doubts:
PBX addresses (as example):
192.168.10.10
192.168.30.1
In event of SW1 failure, I need to route VLAN10 traffic to 192.168.30.1. SW6 supports L3 (will use), but will it work when link from SW6 to PBX is lost. apparently 192.168.10.10 won't be available any more (SW6 failed), even from 192.168.30.0 (A good example: cisco routers' IP address is not reachable, when interface is down)
Another question: Do I really need 3 VLANs here ? I think 2 are sufficient, (30 -data,10-voice (auto ports via OUI mac)).
if phones will be on VLAN10, how they will receive IP addresses ? Probably DHCP server on SW6 (specifically for VLAN10). What of SW6 is down, apparently I need DHCP server on SW1 as well.
Another question. should links from SW6 and SW1 to DC,Fortigate L3 or L2 links ? As with L2 it will create loop with fortugate as it has switch build-in.
I'm a little bit lost here. Can any one suggest how many VLAN-s I need here and any other caveats with this design ? Thank you.