How do I create a LAG (lacp layer 2) between a pair of X670 switches using the VIM4 module ports? I can create one using a pair of ordinary 10G ports on the front panel and it works as shown in the manuals, but I cannot get the thing to work when attempting to use 2 of the VIM4 module ports to interconnect the two switches.
Please don't suggest creating a stack... been there, tried that, and the stacking behavior failed in an unacceptable way. All I want is a simple high-bandwidth uplink between the two switches, and if I could group two 40G VIM4 ports together in a LAG between them that would ideal for me.
I don't know if I'm addressing the ports wrong or not. My understanding thus far is that the VIM physical port to logical port (as used in the configs) numbers goes something like this:
VIM Port 1 - Ports 49, 50, 51, 52
VIM Port 2 - Ports 53, 54, 55, 56
VIM Port 3 - Ports 57, 58, 59, 60
VIM Port 4 - Ports 61, 62, 63, 64
It is my understanding that if the VIM ports are partitioned as 1x40G and I want to use VIM Ports 3 and 4 on both switches to form the LAG lacp link between them, I'd use the first logical port number in each group (i.e. 57 and 61) like this:
#enable sharing 57 grouping 57,61 algorithm address-based L2 lacp
That apparently creates the LAG but when connecting the two switches together using the QSFP+ cables, the link never comes up.