Recently seen a configuration being deployed that used the same value for both the SMLT Virtual BMAC and the LACP SMLT system ID, of say, 0200:00:41:ff.
I have for example used these values. believe these where taken from the configuration guide or training guide (maybe in part)
- V_BMac = 00:00:84:04:01:01
- SMLT Sys ID = 8201:63:22:11
Have seen somewhere a guide as to what to use, but can’t find it at this time.
Wondering if there are specific rules or formulas to follow here, and if it is typical to use the same values for for both BMAC and SMLT Sys ID, or using different values as above in the norm?
Best answer by Ludovico Stevens
There are guidelines for the Smlt-Virt-BMAC; it has to be a unique BMAC in the fabric, so the convention is to re-use the BMAC of one of the vIST nodes and just changing the least significant byte.
Whereas there are no real guidelines for the LACP Smlt-sys-id other than it should be configured to the same value on both vIST nodes making use of LACP for one or more SMLTs links.
Both are configured as a MAC address, so instead of coming up with yet another id for the latter, one can simply re-use the same id as the former.