This document discusses port configuration and security features on a network. It allows the user to control the speed, priority, and enable/disable status of each individual port. It also describes half duplex, full duplex, and auto negotiation settings. Additional features covered include double VLAN, private VLAN, DHCP snooping, BPDU messages, and spanning tree root guard.

1. Port configuration and security

2.  Allows the user to control the speed of each
individual port between 100mbps, 10mbps,
auto and disable.
 Disable allows the user to disconnect the device,
connected to that port, from that network.
 It also allows the user to control the priority of the
ports.

4.  Half duplex – is where two devices can send
and receive data but only one at a time.
 Full duplex – is where both devices can
transmit and receive data at the same time
and any time.
 Auto negotiation - is where both devices will
communicated to each other and then decide
which settings are best for them.

5.  (DVLAN) doubleVLAN allows traffic to pass though
one domain to another though the metro core, this
allows users to connect toWANs like the Internet.
 PrivateVLAN – this allows layer two isolation for ports
with same domain.
 DHCP snooping is a feature that acts between hosts
and DHCP servers checking if the data being received
is harmful to the server and then creating a database
where it contains the IP address from harmful data.

6.  Bridge protocol data unit (BPDU) – is a
message sent across the network containing
information like address and port
configuration. Also while be sent they detect if
there are any loops in the networks.
 Spanning tree root guard (STRG) – prevents
new on unauthorised devices on a network to
become a main/root device for a VLAN