I have the Brocade 300 as you can see on the pictures but I have problem when I connect the fiber. See evidence
Hpw should I face this problem??
looks like incompatible SFPs. Beginning with the 8Gbps switches only Brocade certified SFPs are supported in a Brocade switch. This is to make sure to keep the Brocade specifications. Make sure you have Brocade supported SFPs. I belive there is a list somewhere on the Brocade web site, but all major Brocade OEMs (HP, EMC, etc...) have them too.
@holger.fitz is completely right, when it comes to 8G, you can only use Brocade branded SFPs....