Aggregate L3 links with different speed

[J_Vansen_S]

hi all,

I need a quick verification to proof whether this works or not.

This is a campus network.

Existing we have 5 ospf nodes interconnecting each other via layer 3 p2p 1G links.

We are installing new 10G fibers across all this 5 nodes on top of the 1G links.

So per node i will have 10G and 1G fiber going into my OSPF device.

Is it possible to aggregate both of this links 10G+1G as one?

Based on my understanding, it is not possible? in terms of aggregating links; both links has to be of the same speed.

Without the possibility of aggregating the 2 links, i would need to

• create new p2p L3 link for the 10G
• configure the 10G at a lower ospf cost for it to take primary path.
• 1G link will be a redundant backup

Please correct if me i am wrong.

appreciate any advise

[nurbol555]

Hi

if you connect too of this links 10G+1G with each other, you can configure speed on first side like 1G, and your connect will work on speed 1G. Aggregation with different speed as i know not possible.

About your decision, it's write!

[Leo Laohoo]

Rule #1 with EtherChannel:  All links must have the same speed.