Free CCNA (NEW) | Router Components & Router modes | Day 2 | CCNA 200-301 Complete Course
Free CCNA (NEW) | Router Components & Router modes| Day 2 | CCNA 200-301 Complete Course
#CCNA200301 #CISCO #CCNATraining
Hello Friends,
We are started New Playlist for CCNA 200-301 in this we are going to cover CCNA complete course.
This is Day 2 here we discuss Router Components, Router modes and basic configuration of router in Packet Tracer
If you face any issues put in comments we are going to assist you in that.
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Router Components
A router consists of the following major components:
• CPU
• ROM
• RAM
• NVRAM
• Flash Memory.
• RXBOOT Image
• Interfaces
• Buses
• Power Supply
• Configuration Register
CPU: The CPU executes the instructions of the operating system. Also Perform functions such as system initialization, routing functions, and network interface control etc.
We can check :
Router#sh processes
CPU utilization for five seconds: 0%/0%; one minute: 0%; five minutes: 0%
PID QTy PC Runtime (ms) Invoked uSecs Stacks TTY Process
1 Csp 602F3AF0 0 1627 0 2600/3000 0 Load Meter
2 Lwe 60C5BE00 4 136 29 5572/6000 0 CEF Scanner
3 Lst 602D90F8 1676 837 2002 5740/6000 0 Check heaps
4 Cwe 602D08F8 0 1 0 5568/6000 0 Chunk Manager
5 Cwe 602DF0E8 0 1 0 5592/6000 0 Pool Manager
6 Mst 60251E38 0 2 0 5560/6000 0 Timers
7 Mwe 600D4940 0 2 0 5568/6000 0 Serial Backgrou
8 Mwe 6034B718 0 1 0 2584/3000 0 OIR Handler
9 Mwe 603FA3C8 0 1 0 5612/6000 0 IPC Zone Manage
10 Mwe 603FA1A0 0 8124 0 5488/6000 0 IPC Periodic Ti
11 Mwe 603FA220 0 9 0 4884/6000 0 IPC Seat Manage
12 Lwe 60406818 124 2003 61 5300/6000 0 ARP Input
13 Mwe 60581638 0 1 0 5760/6000 0 HC Counter Time
14 Mwe 605E3D00 0 2 0 5564/6000 0 DDR Timers
15 Msp 80164A38 0 79543 0 5608/6000 0 GraphIt
16 Mwe 802DB0FC 0 2 011576/12000 0 Dialer event
17 Cwe 801E74BC 0 1 0 5808/6000 0 Critical Bkgnd
18 Mwe 80194D20 4 9549 010428/12000 0 Net Background
19 Lwe 8011E9CC 0 20 011096/12000 0 Logger
20 Mwe 80140160 8 79539 0 5108/6000 0 TTY Background
21 Msp 80194114 0 95409 0 8680/9000 0 Per-Second Job
22 Mwe 8047E960 0 2 0 5544/6000 0 dot1x
23 Mwe 80222C8C 4 2 2000 5360/6000 0 DHCPD Receive
24 Mwe 800844A0 0 1 0 5796/6000 0 HTTP Timer
25 Mwe 80099378 0 1 0 5612/6000 0 RARP Input
26 Mst 8022F178 0 1 011796/12000 0 TCP Timer
27 Lwe 802344C8 0 1 011804/12000 0 TCP Protocols
28 Hwe 802870E8 0 1 0 5784/6000 0 Socket Timers
29 Mwe 80426048 64 3 21333 4488/6000 0 L2MM
30 Mwe 80420010 4 1 4000 5592/6000 0 MRD
31 Mwe 8041E570 0 1 0 5584/6000 0 IGMPSN
32 Hwe 80429B40 0 1 0 2604/3000 0 IGMP Snooping P
33 Mwe 804F43B0 0 5 0 5472/6000 0 Cluster L2
34 Mwe 804F18D0 0 17 0 5520/6000 0 Cluster RARP
35 Mwe 804EA650 0 23 0 5440/6000 0 Cluster Base
36 Lwe 802A1158 4 1 4000 5592/6000 0 Router Autoconf
37 Mwe 80022058 0 1 0 5624/6000 0 Syslog Traps
38 Mwe 8031CE88 0 1 0 5788/6000 0 AggMgr Process
39 Mwe 8035EF88 0 407 0 5592/6000 0 PM Callback
40 Mwe 80437B58 0 3 0 5556/6000 0 VTP Trap Proces
41 Mwe 80027D40 0 2 0 5676/6000 0 DHCPD Timer
42 Mwe 8040D3B0 0 2 0 2560/3000 0 STP STACK TOPOL
43 Hwe 8040E338 0 2 0 2560/3000 0 STP FAST TRANSI
ROM: This maintains the instructions for POST (Power on Self Test) for diagnosis and also stores the bootstrap program and basic OS Software.
RAM: It stores the routing tables and the configuration file while the router is powered ON. The running -configuration is stored here. The contents of the RAM are lost when the router is restarted or powered OFF.
NVRAM: It stores the startup configuration.NVRAM configuration remain even after the router is power off or reboot.
Flash Memory: In Flash Memory CISCO IOS Image (ie. OS of router)store. The configuration of Flash memory remain even after reboot or shut down.
RXBOOT Image: This is a cut down version of the IOS located in the routers ROM
Buses: We have system and CPU Buses in routers to move bits among the different components of the router. System bus communicates between the CPU and the Interfaces.
Interfaces: They are physical connectors that connect the router to the network for IP packet entry and exit.
Power Supply: The power supplies can be internal or external to the router. Some routers have multiple power supply for redundancy.
Configuration Register: Routers use a 16 bit software configuration register with which you can set specific system parameters. And It will store in NVRAM.
Example : The Factory-default setting of the configuration register is 0*2102.
Router Modes
There are Mainly 5 modes in Router:
• User Mode (Default Mode): In this mode we can do some basic monitoring.
• Privileged Mode: In this mode we can do monitoring and some troubleshooting. We can run some cmds such as clock, ping, Telnet, Save, Show, history etc.
Global Configuration Mode: In this mode we can do All configuration that effect the router globally.
Interface Mode: In this Mode configurations done on the specific interface.
Rommon Mode: We use this mode Generally when we want password recovery.
Thanks.
