Reference Guide

System management
Dynamic host
conguration
protocol
Provides information to dynamically assign IP addresses and other conguration parameters to network hosts
based on policies (see DHCP commands).
Network time
protocol
Provides information about how to synchronize timekeeping between time servers and clients (see NTP
commands).
Security Provides information about role-based access control, RADIUS server, user roles, and user names (see Security
eommands).
Simple network
management
protocol
Provides an application-layer protocol that provides a message format for communication between SNMP
managers and agents. SNMP provides a standardized framework and a common language for network monitoring
and device management (see SNMP commands).
OS10 image upgrade Provides information about how to upgrade the OS10 software image (see Upgrade commands).
Dynamic host conguration protocol
DHCP is an application layer protocol that dynamically assigns IP addresses and other conguration parameters to network end-stations
(hosts) based on conguration policies determined by network administrators.
DHCP server
Network device oering conguration parameters to the client.
DHCP client Network device requesting conguration parameters from the server.
Relay agent Intermediary network device that passes DHCP messages between the client and server when the server is not on
the same subnet as the host.
Packet format and options
The DHCP server listens on port 67 and transmits to port 68. The DHCP client listens on port 68 and transmits to port 67.
The conguration parameters are options in the DHCP packet in type, length, value (TLV) format. To limit the number of parameters that
servers must provide, hosts enter the parameters that they require and the server sends only those parameters. DHCP uses the user
datagram protocol (UDP) as its transport protocol.
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