Online Error Xbox

1
Hello everyone,

For the past two days, I've been experiencing sporadic or intermittent internet access issues with my Xbox. I'm getting various error messages: No. 100, No. 101, No. 302.
A test in the Microsoft Dashboard shows that I have a connection to Xbox Live.
Is anyone else experiencing these problems with their Xbox? GameCube players don't seem to have any issues. Can anyone tell me what might be causing this? Insignia? Shthack?

Best regards