06: Initial Configuration

The hostname on a new Juniper device is ‘amnesiac’. The root user has no password by default. The password must be set before activating any changes to the factory default configuration (must it?).

set system root-authentication plain-text-password
commit

edit system root-authentication
set plain-text-password
commit

set system time-zone
run set date

EX series switches enable RSTP and LLDP by default. Other product families do not.

Overload the candidate configuration with the factory configuration. Set a root password and then commit the configuration.

load factory-default

Gracefully shut down.

request system halt ?
    at, in, media, message

For routers, halt both-routing-engines. For switches, halt all-members.

Amnesiac (ttyu0)

login: root

root@% cli          (start the Junos CLI from the Unix prompt)

root> configure
root#

root# show
<system configuration>

Save the active configuration as the rescue configuration.

request system configuration rescue save

Delete the rescue configuration.

request system configuration rescue delete

Delete part of the configuration.

delete system services

Rollback to the rescue configuration. This still needs to be committed.

rollback rescure
commit

Interface Types

• Management - connect to management network (fxp0 me0)
• Internal - connect the control and forwarding planes (fxp1 em0)
• Network - physical
• Services - encryption, tunnels
• Loopback - lo0

Interface Naming

• Interface media type - ge, so, at
• Line card (FPC)
• Interface card (PIC)
• Port number

Example: ge-0/2/3

lo0, ae, as, vlan, irb, gre, mtun, ipip, tap

Physical and Logical Properties

Physical Properties are defined on the physical interface. Logical units are like subinterfaces. Logical properties are defined on the logical unit

Logical properties:

• Protocol family (inet, inet6, mpls)
• Addresses

A logical interface is always required. A logical interface can have multiple addressess. When two addressess are on the same subet, one can be ‘preferred’ to be used as the source address. ‘primary’ is the default for broadcast and multicast. By default, the lowest address is ‘primary’.

set family inet address 10.1.1.1
rename family inet address 10.1.1.1/32 to 10.1.1.1/24

show interfaces terse
show interfaces ge-0/0/2 terse

load override /var/home/lab/...
commit and-quit

configure
edit interfaces
set ge-0/0/4 vlan-tagging
set ge-0/0/4 unit 300 vlan-id 300 family inet address 172.18.1.2/30
set ge-0/0/4 unit 300 description "test"
commit and-quit