I ended up just clearing everything and starting over. Sometimes when you've been changing all kinds of things, creating a clean start point is what's needed. Daniel, thanks for the response and suggestions. These are the configs that worked as I would expect. I hope someone can benefit from my efforts. Cisco 6506:interface Port-channel1 description m1000e-ModuleA1 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface Port-channel2 description m1000e-ModuleB1 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface Port-channel3 description m1000e-ModuleC1 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface Port-channel4 description m1000e-ModuleC2 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface Port-channel5 description m1000e-ModuleB2 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface Port-channel6 description m1000e-ModuleA2 switchport switchport trunk encapsulation dot1q switchport mode trunk ! interface GigabitEthernet1/1 description m1000e-ModuleA1-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode active ! interface GigabitEthernet1/2 description m1000e-ModuleB1-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 2 mode active ! interface GigabitEthernet1/3 description m1000e-ModuleC1-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 3 mode active ! interface GigabitEthernet1/46 description m1000e-ModuleC2-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 4 mode active ! interface GigabitEthernet1/47 description m1000e-ModuleB2-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 5 mode active ! interface GigabitEthernet1/48 description m1000e-ModuleA2-Port17 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 6 mode active ! interface GigabitEthernet2/1 description m1000e-ModuleA1-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode active ! interface GigabitEthernet2/2 description m1000e-ModuleB1-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 2 mode active ! interface GigabitEthernet2/3 description m1000e-ModuleC1-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 3 mode active ! interface GigabitEthernet2/46 description m1000e-ModuleC2-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 4 mode active ! interface GigabitEthernet2/47 description m1000e-ModuleB2-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 5 mode active ! interface GigabitEthernet2/48 description m1000e-ModuleA2-Port18 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 6 mode active ! interface GigabitEthernet3/1 description m1000e-ModuleA1-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode active ! interface GigabitEthernet3/2 description m1000e-ModuleB1-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 2 mode active ! interface GigabitEthernet3/3 description m1000e-ModuleC1-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 3 mode active ! interface GigabitEthernet3/46 description m1000e-ModuleC2-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 4 mode active ! interface GigabitEthernet3/47 description m1000e-ModuleB2-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 5 mode active ! interface GigabitEthernet3/48 description m1000e-ModuleA2-Port19 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 6 mode active ! interface GigabitEthernet4/1 description m1000e-ModuleA1-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode active ! interface GigabitEthernet4/2 description m1000e-ModuleB1-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 2 mode active ! interface GigabitEthernet4/3 description m1000e-ModuleC1-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 3 mode active ! interface GigabitEthernet4/46 description m1000e-ModuleC2-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 4 mode active ! interface GigabitEthernet4/47 description m1000e-ModuleB2-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 5 mode active ! interface GigabitEthernet4/48 description m1000e-ModuleA2-Port20 switchport switchport trunk encapsulation dot1q switchport mode trunk channel-group 6 mode active ! interface Vlan100 description Primary VLAN ip address 192.168.100.4 255.255.255.0   -------------------------------------------------------------------------------  Dell m6220-a1  interface vlan 100 1 ip address 192.168.100.41 255.255.255.0 ! interface Gi1/0/1 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/2 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/3 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/4 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/5 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/6 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/7 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/8 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/9 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/10 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/11 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/12 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/13 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/14 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/15 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/16 switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged exit ! interface Gi1/0/17 channel-group 1 mode active switchport mode general switchport general acceptable-frame-type tagged-only exit ! interface Gi1/0/18 channel-group 1 mode active switchport mode general switchport general acceptable-frame-type tagged-only exit ! interface Gi1/0/19 channel-group 1 mode active switchport mode general switchport general acceptable-frame-type tagged-only exit ! interface Gi1/0/20 channel-group 1 mode active switchport mode general switchport general acceptable-frame-type tagged-only exit ! interface port-channel 1 description "Cisco 6506 Po1" switchport mode general switchport general acceptable-frame-type tagged-only switchport general allowed vlan add 100 tagged  The remaining Dell m6220's are the same with the port-channel changed. 
I am transitioning my old Dell 1955 blade chassis to my "new" Dell m1000e blade chassis at home and I've run into an issue. I'm posting it in networking as it relates more closely to that than the other available categories. The setup: Dell m1000e with six m6220 standalone switches (not stacked) connecting to a Cisco 6506. Each m6220 spans four Gb blades in the 6506... m6220-a1, port 17, plugs into 6506, port g1/1; m6220-a1, port 18, plugs into 6506, port g2/1; m6220-a1, port 19, plugs into 6506, port g3/1; m6220-a1, port 20, plugs into 6506, port g4/1; m6220-a2, port 17, plugs into 6506, port g1/48; m6220-a2, port 18, plugs into 6506, port g2/48; m6220-a2, port 19, plugs into 6506, port g3/48; m6220-a2, port 20, plugs into 6506, port g4/48; the process repeats expectedly for the remaining m6220's. The LAG groups are: po1 (12, 17-20) to po1 (g1/1-g4/1); po6 (a2, 17-20) to po6 (g1/2-g4/2) Everything comes up fine. show ether-channel on the Cisco shows LACP is up and running fine, as does the same command on the Dell side. I made all the LAG interfaces trunks and initially assumed Dell was like Cisco whereas no defined allowed VLAN's means all VLAN's allowed. I've since read that the default Dell behavior is to only allowed VLAN's specified. I've added the appropriate VLAN's on the Dell side. Pings between m6220's work fine. Pings to the rest of the network from the m6220's work fine. Pings between the 6506 and the blade servers do not. The blade servers are running ESXi 5.5U2 and I've added both Fabric A interfaces to the management vSwitch. I first tried making the m6220 g1/1 an access port, but that didn't work. I tried making it a trunk port and setting a VLAN, but that didn't work either. What information is needed to assist with this? Thanks.
Dell m6220 aggregate to Cisco 6506