difference between port-channel and port-group

Igano,

To clarify, a port channel is a virtual interface between two devices, whereas a port group is a collection of ethernet ports on a single switch. 

Now in regards to the configuration, you should be able to see the association if you use the show interface status command on the interface in question.

Let me know if this helps.

Hello Chris

dell# show interface ethernet 1/1/41

Ethernet 1/1/41 is up, line protocol is down
Port is part of Port-channel 41
Hardware is Eth, address is 68:4f:63:58:20:e0
Pluggable media not present

Interface index is 54
Internet address is not set
Mode of IPv4 Address Assignment: not set
Interface IPv6 oper status: Disabled
MTU 9216 bytes, IP MTU 9184 bytes
LineSpeed 0, Auto-Negotiation off
Flowcontrol rx on tx off
ARP type: ARPA, ARP Timeout: 60
Queuing strategy: fifo

I can see the port 41 being part of a channel 41 but is not part of any port-group. When will someone create a port-group?

My understanding is that, if you want to create an aggregated link, you first create a channel (virtual interface) then you create a port-group where you add the ports you want to aggregate and finally you add that port-group to the channel. Is my thinking correct? 

Thank you  

Is the command, for example,  port-group 1/1/1  only used for changing the speed modes of a group of ports? I'm starting to understand that port-channel and port-group are unrelated in the sense that you don't need to create a port-group when you want to aggregate links (port-channel), unless you want all the aggregated links to use a different speed mode than the default one. 

Hi, I'm also understanding the same as you. I think the port-group command is not only used to change the speed modes of a port group. When you create a port group, multiple physical interfaces are grouped into a single virtual interface. Instead of configuring individually, this virtual interface can be used to simplify network configuration and management. I don't think it would be necessary to create a port group to bundle connections using a port channel. port-channel interface is created using the port-channel command, and the physical interfaces are added to the port-channel.

Thank you Erman. Are the port-groups below created manually or are there by default?

System Type: S4148U-ON

dell# show port-group

Port-group           Mode             Ports         FEM

port-group1/1/1  Eth   10g-4x 1 2 3 4 -

port-group1/1/2 Eth 10g-4x 5 6 7 8 -

port-group1/1/3 Eth 10g-4x 9 10 11 12 -

port-group1/1/4 Eth 10g-4x 13 14 15 16 -

port-group1/1/5 Eth 10g-4x 17 18 19 20 -

port-group1/1/6 Eth 10g-4x 21 22 23 24 -

port-group1/1/7 Eth 100g-1x 25 -

port-group1/1/8 Eth 100g-1x 26 -

port-group1/1/9 Eth 100g-1x 29 -

port-group1/1/10 Eth 100g-1x 30 -

I'm starting to think these groups are fixed and can not be manually, created. Because when I do:

dell(config)# port-group
Node/Slot/PortGroup(1-10) Port-group id

dell(config)# port-group 1/1/1
dell(conf-pg-1/1/1)#
end          Exit to the exec Mode
exit          Exit from current mode
mode      Port-group mode
no           Negate a command or set its defaults
show     Show configuration

I do not see an option to create a new group.

Hello,

yes port groups are fixed by default, as for example in this model

Dell EMC SmartFabric OS10 User Guide Release 10.5.0 | Dell Costa Rica

Thanks