Command Structure 2-3
Conventions
Conventions Most commands are not case sensitive. As a rule, only <name> and [password]
values require typing the correct case.
Configuration changes occur immediately but are lost on reboot unless you
save them. The save all command places configuration changes in FLASH
ROM (permanent memory). The changes are lost if not saved to FLASH ROM or
if power is lost before you can save them.
Commands to delete a network user, interface, route, TCP connection,
community name, network service and others c annot take place unless the
process or function has first been disabled.
Wherever an IP address value is required, you can enter a host name provide d
you have configured a DNS server or put the name and address into the DNS
Local Host table.
Command Language
Terminology The CLI command language creates, manages, displays and removes system
entities. These entities describe system and network connections and processes.
Most of the managed entities in the system are slotted in tables. Some common
examples are:
Network - defines local and remote networks, network connections, hosts
and routers
VC - A table of parameters that describes co nnection parameters associated
with a remote site. These parameters are used when establishing a network
connection over the WAN.
User - A table of parameters that describes connection par ameters associated
with Telnet users that wish to attach and remotely manage the unit.
Filter - can be applied to interfaces, conn ections, and users to control access
through the system
Interface - describes physical devices; for example, ports
Syslog Host - receives system messages
DNS Server - translates IP addresses to and from host names
Route - describes a path through the network to another system o r network
Table entries are created with an add command, and removed with a delete
command. The add command specifies the most important parameters of the
entry. Additional parameter s are usually specified with the set command, which is
also used to change configured parameters.
The list command displays table entries. For example, list users disp lays all
defined administrative login profiles.
The show command displays detailed informati on about a sp ecific t able en tr y. For
example, show user root displays detailed information for the administrative
login profile root.