Core layer: Considered the backbone of the network (high-end switches, high-speed cables). Concerned only with speed and reliable delivery of data. No packet filtering happens here.
Distribution layer (Workgroup layer): Ensures packets are properly routed between subnets and VLANs using LAN-based routers and Layer 3 switches.
Access layer (Desktop layer): Deals with connecting workstations to the network with switches and hubs
Bridges are software based and can only have one spanning-tree instance per bridge, while switches are hardware based and can have many.
The original Spanning-Tree protocol was created by Digital Equipment Corporation (DEC) which is now part of Compaq. The IEEE created its own version called IEEE 802.1d which is not compatible with the original version.
To change the router configuration stored on TFTP you configure network (config net)
To find out which interface associated with a given MAC address
To determine the trunking status of a link and VLAN status/which trunk ports will receive a frame
To determine the what type of device neighbor is
To check the switch that is root bridge for VLAN1
To identify which vlan a particular interface belongs to
To know the vtp configuration information
To find out the ip address of a neighbor
To check the vlan information of particular switch
To find out the defualt gateway of the switch
Distribution layer (Workgroup layer): Ensures packets are properly routed between subnets and VLANs using LAN-based routers and Layer 3 switches.
Access layer (Desktop layer): Deals with connecting workstations to the network with switches and hubs
A trunk link is a point-to-point link between two switches, a switch, and router or a switch and server which carries multiple VLAN traffic
Bridges are software based and can only have one spanning-tree instance per bridge, while switches are hardware based and can have many.
The original Spanning-Tree protocol was created by Digital Equipment Corporation (DEC) which is now part of Compaq. The IEEE created its own version called IEEE 802.1d which is not compatible with the original version.
To change the router configuration stored on TFTP you configure network (config net)
To find out which interface associated with a given MAC address
-show mac-address-table command
To determine the trunking status of a link and VLAN status/which trunk ports will receive a frame
-show interface trunk
To determine the what type of device neighbor is
-show cdp neighbors
To check the switch that is root bridge for VLAN1
-show spanning-tree vlan 1
To identify which vlan a particular interface belongs to
-show vlan
To know the vtp configuration information
-show vtp status
To find out the ip address of a neighbor
-show cdp neighbor detail
To check the vlan information of particular switch
-show vlan
To find out the defualt gateway of the switch
-show running-config
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