As part of our network: two nexus 7k and one 6513 connetced each other. There is no problem with VLANs have stp root on 7K. But for VLANs with stp root on 6513, we see only the link to one of 7Ks is forwarding traffic. We want traffic load balance on both link and tried to manipulate spanning-tree cost, but it did not work.
The topology is:
either: 6513-- N7k1 --N7K2;
or: 6513-- N7k2 --N7K1.
We want it to be:
N7K1 -- 6513 --N7K2.
Don't know the reason. Any idea? Thanks a lot.
