Extreme Networks

I have to change the IP Address of an existing vlan interface on S8. How to do it?

K7100 --- QSFP+ connected to Port fg.1.4 (set speed to 10000) and S8 --- 4 x SFP+ connected to tg.5.4, tg.5.5 (Modul5) and tg.4.4, tg.4.5 Modul4) Is this right to connect? Or do I have to use 4 x 10G on one Modul (for example Modul4)? How to co...

We have a Matrix x4 for core switch and over 160 enterasys A,B,C stackable switches in our network. I took off a 2nd Unit of a C2 switch, which is in redundant connection to the Matrix X4. After power off the Unit, the network crashes for 1 or 2 min...