VLAN trunking revisited ,,,,,,,,,,
( its not about to bridge different VLANs, its about extending vlan to another switch )
http://www.ciscopress.com/articles/article.asp?p=29803&seqNum=3
quote here
( its not about to bridge different VLANs, its about extending vlan to another switch )
http://www.ciscopress.com/articles/article.asp?p=29803&seqNum=3
quote here
6-3: Trunking
- VLANs are local to each switch's database, and VLAN information is not passed between switches.
- Trunk links provide VLAN identification for frames traveling between switches.
- Cisco switches have two Ethernet trunking mechanisms: ISL and IEEE 802.1Q.
- Certain types of switches can negotiate trunk links.
- Trunks carry traffic from all VLANs to and from the switch by default but can be configured to carry only specified VLAN traffic.
- Trunk links must be configured to allow trunking on each end of the link
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