• Autoconfiguration of new stack units eliminates reconfiguration. • Dynamic Host Configuration Protocol (DHCP) autoconfiguration of
multiple switches through a boot server eases switch deployment. • Automatic Cisco IOS Software version checking and updating help
ensure that all stack members have the same software version. • Automatic QoS (AutoQoS) simplifies QoS configuration in voice
over IP (VoIP) networks by issuing interface and global switch
commands to detect Cisco IP phones, classify traffic, and help
enable egress queue configuration. • Master configuration management helps ensure that all switches
are automatically upgraded when the master switch receives a new
software version. • Autosensing on each non-SFP port detects the speed of the
attached device and automatically configures the port for 10-,
100-, or 1000-Mbps operation, easing switch deployment in mixed 10,
100, and 1000BASE-T environments. • Autonegotiating on all ports automatically selects half- or
full-duplex transmission mode to optimize bandwidth. • Dynamic Trunking Protocol (DTP) facilitates dynamic trunk
configuration across all switch ports. • Port Aggregation Protocol (PAgP) automates the creation of Cisco
Fast EtherChannel ® groups or Gigabit EtherChannel groups to link
to another switch, router, or server. • Link Aggregation Control Protocol (LACP) allows the creation of
Ethernet channeling with devices that conform to IEEE 802.3ad. This
feature is similar to Cisco EtherChannel technology and PAgP. • DHCP Relay allows a DHCP relay agent to broadcast DHCP requests
to the network DHCP server. • IEEE 802.3z-compliant 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX,
1000BASE-T, and CWDM physical-interface support through a
field-replaceable SFP module provides unprecedented flexibility in
switch deployment. • There is a default configuration to help ensure that the switch
can be quickly connected to the network and can pass traffic with
minimal user intervention. This default configuration exists even
if there is no configuration stored in Flash memory. • Automatic media-dependent interface crossover (MDIX)
automatically adjusts transmit and receive pairs if an incorrect
cable type (crossover or straight-through) is installed. | 
