Specifications

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System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches
Chapter 1 Overview
Features
You can use the DHCP image upgrade features to configure a DHCP server to download both a new
image and a new configuration file to one or more switches in a network. This helps ensure that each
new switch added to a network receives the same image and configuration.
Related Topics
Chapter 2, “Assigning the Switch IP Address and Default Gateway”
Switch Boot Optimization
You can configure the switch to minimize the time it takes to boot. When switch boot optimization is
enabled, the switch disables the memory test, file system check (FSCK), and power-on self-test (POST)
that occur during the normal boot process.
Related Topics
Chapter 3, “Configuring Switch Boot Optimization”
NTP
You can manage the system time and date on your switch using automatic configuration, such as the
Network Time Protocol (NTP), or manual configuration methods.
NTP is designed to time-synchronize a network of devices. NTP runs over User Datagram Protocol
(UDP), which runs over IP. An NTP network usually gets its time from an authoritative time source, such
as a radio clock or an atomic clock attached to a time server. NTP then distributes this time across the
network. NTP is extremely efficient; no more than one packet per minute is necessary to synchronize
two devices to within a millisecond of one another.
Related Topics
Chapter 4, “Administering the Switch”
MAC Address Table
The MAC address table contains address information that the switch uses to forward traffic between
ports. All MAC addresses in the address table are associated with one or more ports.
With multiple MAC addresses supported on all ports, you can connect any port on the switch to
individual workstations, repeaters, switches, routers, or other network devices. The switch provides
dynamic addressing by learning the source address of packets it receives on each port and adding the
address and its associated port number to the address table. As stations are added or removed from the
network, the switch updates the address table, adding new dynamic addresses and aging out those that
are not in use.
You can control MAC address learning on a VLAN and manage the MAC address table space that is
available on the switch by controlling which VLANs, and therefore which ports, can learn MAC
addresses.
Related Topics
Chapter 4, “Administering the Switch”