In my home lab I've set up NAS server for iSCSI targets to simulate presenting SAN to ESXi host for VM's. I've got a second nic in both machines for DIRECT cable connection taking the general LAN and switches out of play (SAN network 10.0.0.0/24 & General network is 192.168.1.0/24). Long and short of it all, I can't get any comms between this cards. I've created a seperate iSCSI switch, iSCSI port group, and VMK1 to 10.0.0.253 address with the Physical NIC2 attached. (direct cabled to Nas NIC2)
I've set promiscous mode enabled.
I've checked the routes and they seem fine:
Network Netmask Gateway Interface
10.0.0.0 255.255.255.0 Local Subnet vmk1
192.168.1.0 255.255.255.0 Local Subnet vmk0
default 0.0.0.0 192.168.1.254 vmk0
Tried to ping from the NAS cli, and from ESXcli with no response.
The Default IPStack (only) is on the 192.168.1.0 network.
Am I missing something right in front of my eyes?
Thanks to anyone who can assist in my journey further.
So I found out the problem for what its worth, and I thought I'd share to perhaps help some other newbies in the journey of pulling out ones hair in the name of enlightenment.
I had set the vSWITCH MTU settings incorrectly. Put back to 1500 and traffic resumed as usual.
On to the next self-created dragon to slay.