okay, Cisco's 'Trunking' is not what the rest of the world understands when it hears 'Trunking', there are many examples where Cisco uses exactly one well-known term in a totally different manner.
however, i now have another situation here i don't understand, this time it is about VLANs.
per definition a VLAN '(...) is a method of creating independent logical networks within a physical network. Several VLANs can co-exist within such a network. This helps in reducing the broadcast domain and administratively separating logical segments of LAN (like company departments) which should not exchange data using LAN (they still can by routing).'
'VLAN 1 is the default VLAN; it can never be deleted. All untagged traffic falls into this VLAN by default.'
okay, this is what i knew, what i know and what i believed in.
now a Cisco 4507R shows me from a VLAN supposed to contain clients the server VLAN (which is the default VLAN, renamed from '1' to something different because of security reasons, as recommended by a Cisco Whitepaper).
i can connect to servers from a totally different VLAN while it should not work this way (the port where the server is connected belongs _only_ to the server VLAN).
can someone explain this to me? i _want_ to build walls. i built them the way i always did, and it always worked on non-Cisco devices. now, it doesn't.
help appreciated -- thanks!