# Basic router/switch commands

###### tags: `cisco`

[1]. Write running configuration to start-up configuration
R1#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]


R1#write ?
  core      Write Core File
  erase     Erase NV memory
  memory    Write to NV memory
  mib-data  Write MIB persistence data to NV memory
  network   Write to network TFTP server
  terminal  Write to terminal
  <cr>

R1#write memory
Building configuration...
[OK]
R1#
[2]. Load start-up configuration to running configuration
R1#copy startup-config running-config
Destination filename [running-config]?

1213 bytes copied in 1.260 secs (963 bytes/sec)
R1#
[3]. Show IOS version
R1#show version
Cisco IOS Software, C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(21), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 10-Jul-08 01:21 by prod_rel_team

ROM: ROMMON Emulation Microcode
ROM: C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(21), RELEASE SOFTWARE (fc1)

R1 uptime is 2 hours, 7 minutes
System returned to ROM by unknown reload cause - suspect boot_data[BOOT_COUNT] 0x0, BOOT_COUNT 0, BOOTDATA 19
System image file is "tftp://255.255.255.255/unknown"


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
[e-mail].

Cisco 2621 (MPC860) processor (revision 2.2) with 111616K/19456K bytes of memory.
Processor board ID FTX0945W0MY
M860 processor: part number 0, mask 0
2 FastEthernet interfaces
2 Serial(sync/async) interfaces
32K bytes of NVRAM.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102
[4]. Show running-configuration or startup-configuration
R1#show running-config
R1#show startup-config
[5]. Show brief summary of IP and status on all interfaces
R1#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES TFTP   administratively down down
Serial0/0                  10.1.102.1      YES manual up                    up
FastEthernet0/1            unassigned      YES TFTP   administratively down down
Serial0/1                  10.1.103.1      YES manual up                    up
Loopback11                 10.1.1.1        YES manual up                    up
Loopback15                 10.1.1.5        YES manual up                    up
Loopback19                 10.1.1.9        YES manual up                    up
R1#
[6]. Show interface status and configuration
R1#show interfaces FastEthernet 0/0
FastEthernet0/0 is administratively down, line protocol is down
  Hardware is AmdFE, address is c800.08ac.0000 (bia c800.08ac.0000)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops

R1#show interfaces Serial 0/0
Serial0/0 is up, line protocol is down
  Hardware is PowerQUICC Serial
  Description: R1->R2
  Internet address is 10.1.102.1/29
  MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, loopback not set
  Keepalive set (10 sec)
  Last input 00:06:15, output 00:00:05, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 48 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     190 packets input, 14139 bytes, 0 no buffer
     Received 190 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     244 packets output, 16739 bytes, 0 underruns
     0 output errors, 0 collisions, 18 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

R1#