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Switch Interface Properties (VLANs (Trunking (connecting switches together…
Switch Interface Properties
Basic Interface Configuration
Speed and duplex
speed: 10 / 100 / 1000
duplex: half / full
automatic and manual
needs to match on both sides
IP address management
Layer 3 interfaces
VLAN interfaces
management interfaces
IP address, subnet mask, CIDR block, default gateway, DNS (optional)
VLANs
VlAN Assignment
each device port should be assigned a VLAN
Trunking
connecting switches together
multiple VLANs in a single link
Tagged and untagged VLANS
A non-tagged frame is on the default VLAN
also called the native VLAN
Trunking ports will tag the outgoing frames
and remove the tag on incoming frames
DMZ
Demilitarized zone
an additional layer of security between the internet and you
Power over ethernet (PoE)
Power provided on an Ethernet cable
one wire for both network and electricity
phones, cameras, wireless access points
useful in difficult-to-power areas
Power provided at the switch
Built in power - Endspans
In-line power injector - Midspans
Power modes
Mode A - Power on the data pairs
Mode B - Power on the spare pairs
PoE and PoE+text
PoE:IEEE 802.3af-2003
the original PoE specification
Included in 802.3at
now part of the 802.3 standard
15.4 watts DC power
maximum current of 350 mA
PoE+: IEEE 802.3at-2009
the updated PoE specification
Now also part of the 802.3 standard
25.5 watts DC power
Maximum current of 600 mA
Port mirroring
Examine a copy of the traffic
port mirror (span), network tap
no way to block traffic