Difference between Port Channel and Ether Channel

Answered Question
Feb 23rd, 2012

Hi All,

What is the exact difference between Port-Channel and Ether-Channel. or if they are same terms.

If the below setup is possible. If yes, please let me know the sample config of the L3 and the router1 or any link to the documentation will help.

Also, if the Port channel interface will be l2 or is it possible to configure it l3.

p1.jpg

Your reply is higly appreciated.

Regards,

Ravindra K

I have this problem too.
0 votes
Correct Answer by Peter Paluch about 2 years 1 month ago

Hello,

Perhaps just to add a minor comment: "EtherChannel" or "Link Aggregation" is the particular technology that allows you to bundle several links between two devices and use them simultaneously as a single interface. The "Port-channel" is the name of this virtual interface in IOS. This is similar to, say, WiFi as a technology, and "Dot11Radio0" as the name of the interface, or ISDN as a technology, and BRI as an interface name.

Best regards,

Peter

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rsimoni Thu, 02/23/2012 - 03:39

Port-channel and ether-channel are synonyms.

The way you configured your channel is wrong (unless R1 and R2 are some kind of logically single router/switch such as N7K vpC or Cat6500 VSS - or for some other corner case scnario).

You need to have 2 or more links from a L2 or L3 device bundled together in a portchannel terminating to a SINGLE router or switch.

Riccardo

ravindra.krishna Thu, 02/23/2012 - 04:04

Hi Riccardo,

So you mean

Port-Channel=Link Aggregation=Link Aggregation?

Regards,

Ravindra K

mtsb Thu, 02/23/2012 - 04:34

Hi Ravindra,

Yes, they are all same. In IOS-XR world, they call it bundle-ether.

Port-channel can be of L2 or L3 depending on how you configure it.


Thanks,

Madhu

rsimoni Thu, 02/23/2012 - 07:57

Hi Ravindra,

Port-Channel=Link Aggregation=Link Aggregation?

I guess you meant

Port-Channel=Etherchannel=Link Aggregation?

the answer is yes.

Riccardo

ravindra.krishna Fri, 02/24/2012 - 22:15

yes you are right. I meant

Port-Channel=Etherchannel=Link Aggregation?

Thanks Ricardo. It's resolved.

Regards,

Ravi

Correct Answer
Peter Paluch Fri, 02/24/2012 - 14:45

Hello,

Perhaps just to add a minor comment: "EtherChannel" or "Link Aggregation" is the particular technology that allows you to bundle several links between two devices and use them simultaneously as a single interface. The "Port-channel" is the name of this virtual interface in IOS. This is similar to, say, WiFi as a technology, and "Dot11Radio0" as the name of the interface, or ISDN as a technology, and BRI as an interface name.

Best regards,

Peter

Leo Laohoo Fri, 02/24/2012 - 14:53
The "Port-channel" is the name of this virtual interface in IOS. This is similar to, say, WiFi as a technology, and "Dot11Radio0" as the name of the interface,

Errr ... Dot11Radio0 and Dot11Radio1 are both physical interface.  Bridged Virtual Interface (BVI) is a virtual interface for both wired and wireless networks.

Peter Paluch Fri, 02/24/2012 - 15:09

Leo,

Yes, you're right - I was merely pointing on the difference between a technology and the usual name for the interface to access that technology.

Best regards,

Peter

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Posted February 23, 2012 at 3:14 AM
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