`Have the FX2 with two 4 port IOA's.
The FX2 chassis currently has 4 FC430 server blades installed. 3 running vmware, 1 running Windows Server 2012 R2 (domain controller / DNS / DHCP)
On the IOA1 we have two ports uplinked to 10gbe fiber sft+ on cisco 3750x2 switch stack (this is our collapsed core network). On Cisco side this is PortChannel3.
On IOA2 we have a port each to a seperate brocade turboiron 24x 10gbe switch via active twinax. This is not on our network as its completely its own silo with just NFS storage and backup storage (primarally for vmware to run its vmdk's off of).
Issue with IOA1 and the DHCP server in slot 4 of the chassis is when vlan 5 is allowed on the trunk, the DHCP server will issue the WRONG IP address to wireless clients. Our wireless is VLAN 5 (10.5.3.0/16) Instead it issues an IP address in VLAN1 (10.1.3.0/16). No issues with our second floor VLAN2 dhcp, third floor VLAN3 dhcp, or 4th floor VLAN4 dhcp. IN fact I believe because those vlans (2,3 and 4) are not trunked to the IOA. Vlan 5 doesn't really need to be trunked in either, so I removed it from the vlan configuration using the Dell CMC web gui focused on IOA 1.
Strangely removing vlan 5 immedialy allowed the DHCP server to return the proper IP address (starting with 10.5.3.xxx). Even with vlan 5 on the trunk wireshark seemed to indicate dhcp aks were coming from 10.5.255.255 but for whatever reason the dhcp server did not issue the correct IP.
On the NIC properties I have VLAN 1 specified.
Our infrastructure is the following
VLAN1 - default vlan, 1st floor, networking gear, servers, switches, IT, etc..
VLAN2 - second floor
VLAN3 - third floor
VLAN4 - fourth floor
VLAN5 - wireless
VLAN10 - SAN
VLAN20 - DMZ
VLAN 21 - DMZ Intermediate
VLAN 172 - voip
On the trunk on cisco side it looks like this
interface Port-channel3
description Dell FX2 IOA Port Channel
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,5,10,20,21,172
switchport mode trunk
interface TenGigabitEthernet7/1/1
description Dell FX2 IOA A1 Port 10
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,5,10,20,21,172
switchport mode trunk
ip access-group acl1 in
mls qos trust dscp
channel-group 3 mode active
interface TenGigabitEthernet9/1/1
description Dell FX2 IOA 10GbE A1 Port 9
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,5,10,20,21,172
switchport mode trunk
ip access-group acl1 in
mls qos trust dscp
channel-group 3 mode active
I've since took off vlan 5 from the Dell side and things are fine. I'll eventually take vlan 5 off the cisco side as well.
The other issue i have is the Dell IOA management IP, 10.1.0.103 is not reachable as long as the CMC management inteface is plugged into an active switchport. So I just access the Dell IOA switch 1 by SSH to dell cmc and issuing a connect -b switch-1 command.
IOA 2 is 100% accessible at its management IP, 10.1.0.104, without having to go through the CMC in SSH.
Any ideas what is going on here?