Lab 3.2.5 Observing the Router Startup Process
Task 1: Observe and Examine the Router Startup Process
Step 1: Connect and set up the router
a. Referring to the topology diagram, connect the console (or rollover) cable to the console port on the router and the other cable end to the host computer with a DB-9 or DB-25 adapter to the COM 1 port.
Ensure that power has been applied to both the host computer and router.
b. Establish a HyperTerminal or other terminal emulation program connection to the router.
Step 2: Restart the router and observe the output
a. From the privileged EXEC prompt, issue the reload command. Confirm the reload when prompted.
b. Observe the output as the router restarts.
Output similar to this will be displayed.
POST information:
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.
PLD version 0×10
GIO ASIC version 0×127
c1841 platform with 131072 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled
Locating and Loading information:
Readonly ROMMON initialized
program load complete, entry point: 0x8000f000, size: 0xcb80
program load complete, entry point: 0x8000f000, size: 0xcb80
program load complete, entry point: 0x8000f000, size: 0xd4a9a0
Self decompressing the image :
#################################################
#######################################################################
################# [OK]
Smart Init is enabled
smart init is sizing iomem
ID MEMORY_REQ TYPE
0X003AA110 public buffer pools
0X00211000 public particle pools
0X0013 0X00035000 Card in slot 0
0X000021B8 Onboard USB
If any of the above Memory Requirements are
“UNKNOWN”, you may be using an unsupported
configuration or there is a software problem and
system operation may be compromised.
Allocating additional 7692243 bytes to IO Memory.
PMem allocated: 117440512 bytes; IOMem allocated: 16777216 bytes
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software – Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.4(1c),
RELEASE SO
FTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Tue 25-Oct-05 17:10 by evmiller
Image text-base: 0x6007ECA0, data-base: 0×61480000
Port Statistics for unclassified packets is not turned on.
Cisco 1841 (revision 7.0) with 114688K/16384K bytes of memory.
Processor board ID FTX1118X0BN
2 FastEthernet interfaces
2 Low-speed serial(sync/async) interfaces
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
31360K bytes of ATA CompactFlash (Read/Write)
Step 3: Examine the router startup output
The startup process has three stages:
a. Performing the POST and loading the bootstrap program
Examine the output displayed. Look at the highlighted section in the sample output in this lab that relates to the POST. Mark any differences between your observed output and this sample.
What are possible reasons for these differences?______ OS yang berbeda file, perangkat yang berbeda, dll
What does the POST test in the router?_________ Hardware
If the POST is successful, what is loaded into RAM?_________ The bootstrap program
What is the purpose of what is loaded into RAM?______ Locate the Cisco IOS and load it intobRAM
What would happen if the POST is unsuccessful, and what could this mean?
IOS tidak akan memuat dan router tidak akan berjalan
b. Locating and loading the IOS software
Examine the displayed output. Look at the sample output in this lab that relates to the IOS loading.
Mark any differences between your observed output and this sample.
What are possible reasons for these differences?______ OS yang berbeda file, perangkat yang berbeda, dll
What are the three possible locations of the IOS?_____Flash memory, TFTP server, lokasi yang ditentukan di file konfigurasi startup (lokasi jaringan)
How is the IOS location to be used specified?_________ Konfigurasi nilai register
The confreg program is available to decode configuration register values. It can be downloaded from
Academy Connection Tools. From Tools, select the CCNA Curriculum (not CCNA Discovery or CCNA
Exploration), and then select any v3.1 course. Click Cisco Configuration Register Decoder to
download the program.
After it is installed and executed, the program displays the binary and hexadecimal values of the
register that set the different router startup sequences and console communications.
What will be the result if an IOS image cannot be located and loaded?_____ Modus ROMON dimasukkan
c. Locating and executing the startup configuration file or entering setup mode
Examine the displayed output. Look at the sample output in this lab that relates to the startup
configuration loading. Mark any differences between your observed output and this sample.
What are possible reasons for these differences?_______OS yang berbeda file, perangkat yang berbeda, dll.
What is the output if the router does not have a configuration to load?______— System Configuration Dialog —
Continue with configuration dialog? [yes/no]:
What is displayed if a startup configuration is loaded?_____ User EXEC prompt
Step 4: Clean up
Erase the configurations and reload the router. Disconnect and store the cabling. For PC hosts that are
normally connected to other networks (such as the school LAN or to the Internet), delete the IOS image file from the TFTP directory, reconnect the appropriate cabling, and restore the TCP/IP settings.
Task 2: Reflection / Challenge
Prepare a troubleshooting checklist based on the router startup stages and the hardware and software
features associated with each stage. Format the checklist so that if it is noted that a stage was unsuccessful, the possible problems can be readily identified. For example, for “IOS not loaded” enter “ROMON prompt displayed.” Prepare a second checklist listing possible router faults or problems. For example, “no cooling fan sound,” “LEDs not illuminated or showing unusual behavior,” or “unexpected ROMON prompt displayed.” For each problem listed, enter the stage of the router startup process that failed.
