I have been doing lab work in preparation for the 300-115 test schedule for next week. Specifically, I was working on Ether-channel configurations and then transitioned to configuring MSTP utilizing the previously configured links (2 ports bundled into and Ether-channel). It's a basic config with 6 VLAN's and 3 MST instances (0,1,2) and the VLAN's distributed evenly between instance 1 and 2 . After successfully configuring MSTP, the stp info for instance 1 & 2 comes back with "No mst information available for instance(s) 1 or 2.
This happened whether I used PAgP, LACP or the "On" configuration
When I utilized 802.1q trunks between the devices, MSTP worked as expected.
I've searched and read a bunch of documentation and can't find a specific statement that MSTP can or can't be used over Ether-channel.
Can anyone help upgrade my knowledge in this area? Thank you in advance.
I did the same test on VMware, I found the same issue as yours. I could not find any evidence to show MST can or cannot run over Ethernetchannel. 5 years passed, seems like there is still no answer, lol