Part 1: Logging In and Exploring the CLI
In this lab part, you become familiar with the access details used to connect to the lab equipment. Once you are familiar with the access details, you will use the CLI to log in to your team’s designated station and use the CLI to become familiar with operational mode and configuration mode. You also gain experience with some of the tools and functionality available within operational mode and configuration mode.
Note
Depending on the class, the lab equipment used might be remote from your physical location. The instructor will inform you as to the nature of your access and will provide you the details needed to access your assigned device.
Step 1.1
Ensure that you know to which student device you have been assigned. Check with your instructor if you are not certain. Consult the management network diagram to determine the management address of your student device
Question: What is the management address assigned to your station?
Answer: The answer varies; in the example used throughout this lab, the user belongs to the srxA-1 station, which uses an IP address of 10.210.14.131. Your answer will depend on the rack of equipment your class is using.
Step 1.2
Access the CLI at your station using either the console, Telnet, or SSH as directed by your instructor. Refer to the management network diagram for the IP address associated with your team’s station. The following example uses a simple Telnet access to srxA-1 with the Secure CRT program as a basis:
Lab 1–2 • The Junos CLI (Detailed) |
www.juniper.net |
Step 1.3
Log in to the student device with the username lab using a password of lab123. Note that both the name and password are case-sensitive. Issue the configure command to enter configuration mode and load the reset configuration file using the load override /var/home/lab/ijos/lab1-start.config command. After the configuration has been loaded, commit the changes and return to operational mode using the commit and-quit command.
srxA-1 (ttyp0)
login: lab Password:
--- JUNOS 12.1R1.9 built 2012-03-24 12:12:49 UTC lab@srxA-1> configure
Entering configuration mode
[edit]
lab@srxA-1# load override ijos/lab1-start.config load complete
[edit]
lab@srxA-1# commit and-quit commit complete
Exiting configuration mode
lab@srxA-1>
Step 1.4
Determine what system information you can clear from the operational mode command prompt.
lab@srxA-1> clear ? |
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Possible completions: |
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amt |
Show AMT Protocol information |
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arp |
Clear address resolution information |
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auto-configuration |
Clear auto-configuration action |
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bfd |
Clear Bidirectional Forwarding Detection information |
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bgp |
Clear Border Gateway Protocol information |
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bridge |
Clear learned Layer 2 MAC address information |
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www.juniper.net |
The Junos CLI (Detailed) • Lab 1–3 |
chassis |
Clear chassis information |
database-replication |
Clear database replication information |
dhcpv6 |
Clear DHCPv6 information |
dot1x |
Clear 802.1X session |
esis |
Clear end system-to-intermediate system information |
ethernet-switching |
Clear ethernet switching information |
fabric |
Clear RPDF Internal data structures |
firewall |
Clear firewall counters |
gvrp |
Clears Generic VLAN Registration Protocol information |
helper |
Clear port-forwarding helper information |
igmp |
Clear Internet Group Management Protocol information |
igmp-snooping |
Clear IGMP snooping information |
interfaces |
Clear interface information |
ipv6 |
Clear IP version 6 information |
isdn |
Clear Integrated Services Digital Network information |
isis |
Clear Intermediate System-to-Intermediate System |
information |
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l2-learning |
Clear learned Layer 2 MAC address information |
lacp |
Clear Link Aggregation Control Protocol information |
ldp |
Clear Label Distribution Protocol information |
lldp |
Clear Link Layer Discovery Protocol information |
log |
Clear contents of log file |
mld |
Clear multicast listener discovery information |
mld-snooping |
Clear MLD snooping information |
mpls |
Clear mpls information |
msdp |
Clear Multicast Source Discovery Protocol information |
multicast |
Clear multicast information |
network-access |
Clear network-access related information |
ospf |
Clear Open Shortest Path First information |
ospf3 |
Clear Open Shortest Path First version 3 information |
passive-monitoring |
Clear passive monitoring statistics |
pfe |
Clear Packet Forwarding Engine information |
pgm |
Clear Pragmatic Generalized Multicast information |
pim |
Clear Protocol Independent Multicast information |
ppp |
Clear PPP information |
pppoe |
Clear PPP over Ethernet information |
protection-group |
Clear protection group information |
r2cp |
Clear Radio-to-Router Protocol information |
rip |
Clear Routing Information Protocol information |
ripng |
Clear Routing Information Protocol for IPv6 information |
rsvp |
Clear Resource Reservation Protocol information |
security |
Clear security information |
services |
Clear services |
snmp |
Clear Simple Network Management Protocol information |
spanning-tree |
Clear Spanning Tree Protocol information |
system |
Clear system information |
vpls |
Clear learned Layer 2 MAC address information |
vrrp |
Clear Virtual Router Redundancy Protocol statistics |
wlan |
Clear Wireless LAN information |
Lab 1–4 • The Junos CLI (Detailed) |
www.juniper.net |
Question: Which command do you use to clear the contents of a system log (syslog) file?
Answer: Use the clear log log-filename command to clear the contents of a particular syslog file.
Step 1.5
Experiment with command completion by entering show i<space>.
lab@srxA-1> show i |
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'i' is ambiguous. |
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Possible completions: |
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iccp |
Show Inter Chassis Control Protocol information |
igmp |
Show Internet Group Management Protocol information |
igmp-snooping |
Show IGMP snooping information |
ingress-replication |
Show Ingress-Replication tunnel information |
interfaces |
Show interface information |
ipv6 |
Show IP version 6 information |
isdn |
Show Integrated Services Digital Network information |
isis |
Show Intermediate System-to-Intermediate System |
information |
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Step 1.6
Add characters to disambiguate your command so that you can display interface-related information; use the Spacebar or Tab key for automatic command completion.
Note
You can return to the command prompt without scrolling through all of the generated output from a command. Enter the Ctrl+c key sequence or the q key to abort the operation and return to the command prompt.
lab@srxA-1> show int<space>erfaces
Physical interface: ge-0/0/0, Enabled, Physical link is Up Interface index: 134, SNMP ifIndex: 507
Description: MGMT Interface - DO NOT DELETE
Link-level type: Ethernet, MTU: 1514, Link-mode: Full-duplex, Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled,
Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online
Device flags |
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Present Running |
Interface flags: |
SNMP-Traps Internal: 0x0 |
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Link flags |
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None |
CoS queues |
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8 supported, 8 maximum usable queues |
Current address: |
00:26:88:e1:54:80, Hardware address: 00:26:88:e1:54:80 |
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Last flapped |
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2011-04-20 02:02:04 UTC (2d 03:09 ago) |
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www.juniper.net |
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The Junos CLI (Detailed) • Lab 1–5 |