Annex C18 Advanced Switching Concepts Flashcards
Purpose of a VLAN Database (vlan.dat)
VLAN info you create on the VLAN server is stored within a VLAN database file
This database is the central repository for VLAN info for that VTP domain
Purpose of a Virtual Local Area Network (VLAN)
VLANS are used to separate the one layer 2 broadcast domain into multiple networks based upon the desires of the data planner
VLAN trunking protocol
VTP is a management protocol that group switches into a VTP domain
VTP domain
Collection of switches that fall under the same VTP server and share a common VLAN database
VLAN Trunk
Connection between switches that is programmed to allow VLAN database info and multiple VLANs to travers that connection,
It uses VTP IOT do this
Two (2) main types of VLAN tagging technologies
Inter Switch Link (ISL)
802.1q
Purpose of Inter VLAN Routing
Only layer 3 devices can route traffic between different VLANS
Routing data between VLANs within a switched LAN is the purpose of Inter VLAN routing
Preferred intermediary device used to perform inter VLAN routing within USMC PSNs
Layer 3 switches
Spanning Tree Protocol
Prevent loops from forming on the LAN
Loops can form on the layer 2 network since there are no TTL indicators in frames
Advantages of Cisco Etherchannel Technology
Significantly increases the bandwidth between two devices
Fault tolerance: if 1 line out of the group of 8 is cut, etherchannel will automatically compensate