Tài liệu show tech-support Command docx

1-12 Semester 8 Internetwork Troubleshooting v1.0 - Lab 2.5.4 Copyright  2001, Cisco Systems, Inc.
Lab 2.5.4: show tech-support Command
SanJose1 SanJose2
#2#1
S0/0 S0/0
192.168.1.10 192.168.2.10

Objective
This lab you will look at the output of one command the show tech-
support command that combines several common and not so common
commands to provide a snapshot of your device to help technical support
deal with a difficult problem.
Warning: Some companies may have a problem with forwarding some of
this information to anyone outside the company. Be aware that a company’s
Security Policies and their potential implications on your career must always
be considered. It is not the purpose of this lab to have a position about
conflicts between troubleshooting and security – just to warn you not get
yourself jammed up over this.
Scenario
You have been fighting a problem with a device and you need to gather as
much information as you think you might need to work with Cisco’s support
(TAC) personnel.
Note: The configuration file used for this lab will be used for other module 2
labs, so please do not change any configuration settings. The configuration
contains several components for testing purposes and is not intended to
represent a good production configuration.
If the lab is done in pairs, each person can run the lab steps albeit each host
may display slightly different results. It might be beneficial to coordinate your
efforts and compare results.

2-12 Semester 8 Internetwork Troubleshooting v1.0 - Lab 2.5.4 Copyright  2001, Cisco Systems, Inc.
Step 1
Cable the lab as shown in the diagram.
Load the configuration files Lab2-5-4-SanJose1Config.txt and Lab2-5-4-
SanJose2Config.txt into the appropriate routers.
Configure the workstations as follows:
Host #1 Host #2
IP Address: 192.168.1.10 IP Address: 192.168.2.10
Subnet mask: 255.255.255.0 Subnet mask: 255.255.255.0
Default Gateway: 192.168.1.1 Default Gateway: 192.168.2.1
Step 2
On either router type the show tech-support command and watch it
scroll by. It can easily be over 10 pages long for a simple device. Scroll back
and look over the output.
You may find that the first part of the output is gone. Use the Transfer |
Capture Text feature of HyperTerminal and designate a document called
ShowTech-Support.TXT on either a floppy disk or the computer’s desktop.
Once it is started, rerun the show tech-support command. When it is
done be sure to return to Transfer | Capture Text and Stop the capture
session.
While every model and configuration of device will be different, the result will
look something like the following. Look over your capture file (or this
sample) and try to figure out why the information is important. The highlights
are to call your attention to certain items. The comments in parenthesis are
observations of the author.
Consider reviewing this with your text for reference. Many of the fields are
explained.
SanJose1#
SanJose1#show tech-support

------------------ show version ------------------
(Displays the systems hardware and software configuration)
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-D-L), Version 12.0(5)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Fri 23-Jul-99 03:53 by kpma
Image text-base: 0x03043078, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE
SOFTWARE (fc1)

SanJose1 uptime is 28 minutes
System returned to ROM by reload
System image file is "flash:/c2500-d-l.120-5.T.bin"


3-12 Semester 8 Internetwork Troubleshooting v1.0 - Lab 2.5.4 Copyright  2001, Cisco Systems, Inc.
cisco 2524 (68030) processor (revision J) with 6144K/2048K bytes of memory.
Processor board ID 08855719, with hardware revision 00000000
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s) (Hardware configuration / interfaces)
2 Serial network interface(s)
5-in-1 module for Serial Interface 0
56k 4-wire CSU/DSU for Serial Interface 1
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102 (Unit will boot from flash)

------------------ show running-config ------------------
(The basic show run command)

Building configuration...

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname SanJose1
!
enable password <removed> (The ouput generator did this)
! (While the password were removed, Security’s concern may be with the IP
address)
!
ip subnet-zero
no ip domain-lookup
ip host SanJose2 192.168.60.1 192.168.70.1 192.168.80.1
!
appletalk routing
ipx routing 0000.1111.1111
!
!
process-max-time 200
!

interface Loopback0
ip address 192.168.10.1 255.255.255.0
no ip directed-broadcast
ipx network 31
!
interface Loopback1
ip address 192.168.20.1 255.255.255.0
no ip directed-broadcast
ipx network 32
!
interface Loopback2
ip address 192.168.30.1 255.255.255.0
no ip directed-broadcast
ipx network 33
!
interface Loopback3
ip address 192.168.40.1 255.255.255.0
no ip directed-broadcast
!
interface Loopback4
ip address 192.168.50.1 255.255.255.0
no ip directed-broadcast
!
interface Ethernet0
ip address 192.168.4.1 255.255.255.0 secondary
ip address 192.168.1.1 255.255.255.0
ip access-group 100 in
ip access-group 50 out

4-12 Semester 8 Internetwork Troubleshooting v1.0 - Lab 2.5.4 Copyright  2001, Cisco Systems, Inc.

no ip directed-broadcast
appletalk cable-range 50-60 53.48
appletalk zone A
ipx network 30
!
interface Serial0
ip address 192.168.0.1 255.255.255.0
ip access-group protect_acctg_servers in
no ip directed-broadcast
no ip mroute-cache
appletalk cable-range 10-20 18.7
appletalk zone A
ipx network 20
clockrate 56000
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
router eigrp 90
network 192.168.0.0
network 192.168.40.0
!
router ospf 100
network 192.168.0.0 0.0.0.255 area 0
network 192.168.10.0 0.0.0.255 area 0
network 192.168.20.0 0.0.0.255 area 1
network 192.168.30.0 0.0.0.255 area 2
!

router rip
version 2
network 192.168.0.0
network 192.168.1.0
network 192.168.4.0
!
router igrp 90
network 192.168.50.0
!
ip classless
ip http server
!
!
ip access-list extended protect_acctg_servers
deny tcp 192.168.60.0 0.0.0.255 192.168.10.0 0.0.0.7 eq www
deny tcp 192.168.70.0 0.0.0.255 192.168.10.0 0.0.0.7 eq www
deny tcp 192.168.80.0 0.0.0.255 192.168.10.0 0.0.0.7 eq www
deny tcp 192.168.90.0 0.0.0.255 192.168.10.0 0.0.0.7 eq www
deny tcp 192.168.91.0 0.0.0.255 192.168.10.0 0.0.0.7 eq www
permit ip any any
access-list 50 deny 192.168.60.0 0.0.0.255
access-list 50 deny 192.168.70.0 0.0.0.255
access-list 50 deny 192.168.80.64 0.0.0.31
access-list 50 permit any
access-list 100 deny tcp any 192.168.90.0 0.0.0.255 eq www
access-list 100 deny tcp any 192.168.90.0 0.0.0.255 eq ftp
access-list 100 deny tcp any 192.168.91.0 0.0.0.255 eq www
access-list 100 deny tcp any 192.168.91.0 0.0.0.255 eq ftp
access-list 100 deny icmp any host 192.168.60.1
access-list 100 permit ip any any

!
!
ipx sap 4 clunker 30.aaaa.aaaa.aaaa 451 2
!
snmp-server engineID local 00000009020000107B3A3F60
snmp-server community <removed> RO
snmp-server location SanJose1_CCNP_LAB
snmp-server contact SanJose1 IT LAN Lead 555-9876
!
line con 0
password <removed>

5-12 Semester 8 Internetwork Troubleshooting v1.0 - Lab 2.5.4 Copyright  2001, Cisco Systems, Inc.
logging synchronous
login
transport input none
line aux 0
password <removed>
login
transport input all
line vty 0 4
password <removed>
login
!
end


------------------ show controllers ------------------

LANCE unit 0, idb 0xF72EC, ds 0xF8D88, regaddr = 0x2130000, reset_mask 0x2

IB at 0x606E64: mode=0x0000, mcfilter 0000/0000/0100/2020
station address 0010.7b3a.3f60 default station address 0010.7b3a.3f60
buffer size 1524
RX ring with 16 entries at 0x606EA8
Rxhead = 0x606EA8 (0), Rxp = 0xF8DA4 (0)
00 pak=0x0FA2C8 ds=0x60A64A status=0x80 max_size=1524 pak_size=594
01 pak=0x0FC788 ds=0x61120A status=0x80 max_size=1524 pak_size=247
02 pak=0x0FABF8 ds=0x60C13A status=0x80 max_size=1524 pak_size=130
03 pak=0x0FC0A4 ds=0x60FDD6 status=0x80 max_size=1524 pak_size=346
04 pak=0x0FC2F0 ds=0x610492 status=0x80 max_size=1524 pak_size=594
05 pak=0x0FBE58 ds=0x60F71A status=0x80 max_size=1524 pak_size=363
06 pak=0x0FC53C ds=0x610B4E status=0x80 max_size=1524 pak_size=130
07 pak=0x0FC9D4 ds=0x6118C6 status=0x80 max_size=1524 pak_size=346
08 pak=0x0FB774 ds=0x60E2E6 status=0x80 max_size=1524 pak_size=594
09 pak=0x0FB9C0 ds=0x60E9A2 status=0x80 max_size=1524 pak_size=130
10 pak=0x0FA9AC ds=0x60BA7E status=0x80 max_size=1524 pak_size=346
11 pak=0x0FBC0C ds=0x60F05E status=0x80 max_size=1524 pak_size=594
12 pak=0x0FB528 ds=0x60DC2A status=0x80 max_size=1524 pak_size=363
13 pak=0x0FA760 ds=0x60B3C2 status=0x80 max_size=1524 pak_size=346
14 pak=0x0FB2DC ds=0x60D56E status=0x80 max_size=1524 pak_size=594
15 pak=0x0FB090 ds=0x60CEB2 status=0x80 max_size=1524 pak_size=130
TX ring with 4 entries at 0x606F68, tx_count = 0
tx_head = 0x606F80 (3), head_txp = 0xF8E04 (3)
tx_tail = 0x606F80 (3), tail_txp = 0xF8E04 (3)
00 pak=0x000000 ds=0x643B8E status=0x03 status2=0x0000 pak_size=343
01 pak=0x000000 ds=0x630E2E status=0x03 status2=0x0000 pak_size=60
02 pak=0x000000 ds=0x60439A status=0x03 status2=0x0000 pak_size=60
03 pak=0x000000 ds=0x60439A status=0x03 status2=0x0000 pak_size=60
0 missed datagrams, 0 overruns
0 transmitter underruns, 0 excessive collisions

0 single collisions, 0 multiple collisions
0 dma memory errors, 0 CRC errors

0 alignment errors, 0 runts, 0 giants
0 tdr, 0 spurious initialization done interrupts
0 no enp status, 0 buffer errors, 0 overflow errors
0 tx_buff, 0 throttled, 0 enabled
Lance csr0 = 0x73
HD unit 0, idb = 0xFEA88, driver structure at 0x104920
buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 56000
cpb = 0x61, eda = 0x48C8, cda = 0x48DC
RX ring with 16 entries at 0x614800
00 bd_ptr=0x4800 pak=0x106934 ds=0x61A970 status=80 pak_size=33
01 bd_ptr=0x4814 pak=0x105B6C ds=0x618108 status=80 pak_size=64
02 bd_ptr=0x4828 pak=0x108278 ds=0x61F384 status=80 pak_size=22
03 bd_ptr=0x483C pak=0x10802C ds=0x61ECC8 status=80 pak_size=64
04 bd_ptr=0x4850 pak=0x107DE0 ds=0x61E60C status=80 pak_size=72
05 bd_ptr=0x4864 pak=0x1084C4 ds=0x61FA40 status=80 pak_size=60
06 bd_ptr=0x4878 pak=0x108710 ds=0x6200FC status=80 pak_size=33
07 bd_ptr=0x488C pak=0x1076FC ds=0x61D1D8 status=80 pak_size=64
08 bd_ptr=0x48A0 pak=0x10895C ds=0x6207B8 status=80 pak_size=116
09 bd_ptr=0x48B4 pak=0x108BA8 ds=0x620E74 status=80 pak_size=318
10 bd_ptr=0x48C8 pak=0x108DF4 ds=0x621530 status=80 pak_size=64
11 bd_ptr=0x48DC pak=0x10928C ds=0x6222A8 status=80 pak_size=72