19 Must know SHOW commands for CISCO CLI
Hi Readers, In this post
i am gonna write about 19 must known SHOW command for CISCO command line
interface that will help you while working in real-world networking
environment.
All configuration which i am
gonna show here are extracted from real-work environment
If u have any concern please
feel free to mail us capecisco@gmail.com
Thanks to Sumit Sharma Admin of
networkproxy.wordpress.com For his dedicated work !
The show version command
displays different information depending on the type of device you use. This command gives uptime, info about
software and hardware and a few other details.
● IOS version
● System uptime
● Image filename
● Type of processor
● Amount of RAM
● Number of ports on the switch
● Amount of flash memory
● MAC address
● Serial number
1-a)
Show version | in uptime
This
command shows uptime of devices.
Example:-
core_1#show version | in uptime
core_1 uptime is 1 year, 23
weeks, 5 days, 3 hours, 22 minutes
2). Show Processes CPU history
➢ The show
processes CPU command to
display detailed CPU utilization statistics on these processes.
➢ The show
processes memory command to
show the amount of memory used.
The show processes CPU command displays information about the
active processes in the router and their corresponding CPU utilization
statistics. The following is a sample output of the show processes CPU command:
router#show processes cpu
CPU utilization for five
seconds: 8%/4%; one minute: 6%; five minutes: 5%
PID Runtime(uS)
Invoked uSecs 5Sec 1Min 5Min
TTY Process
1
384 32789 11
0.00% 0.00% 0.00% 0 Load Meter
2
2752 1179 2334
0.73% 1.06% 0.29% 0 Exec
3
318592 5273 60419 0.00%
0.15% 0.17% 0 Check heaps
4
4 1
4000 0.00% 0.00% 0.00% 0 Pool Manager
5
6472 6568 985
0.00% 0.00% 0.00% 0 ARP Input
6
10892 9461 1151
0.00% 0.00% 0.00% 0 IP Input
7
67388 53244 1265
0.16% 0.04% 0.02% 0 CDP Protocol
8
145520 166455 874 0.40%
0.29% 0.29% 0 IP Background
9
3356 1568 2140
0.08% 0.00% 0.00% 0 BOOTP Server
10
32 5469
5 0.00% 0.00% 0.00% 0 Net Background
11
42256 163623 258 0.16%
0.02% 0.00% 0 Per-Second Jobs
12
189936 163623 1160 0.00%
0.04% 0.05% 0 Net Periodic
13
3248 6351 511
0.00% 0.00% 0.00% 0 Net Input
14
168 32790 5
0.00% 0.00% 0.00% 0 Compute load avgs
15
152408 2731 55806 0.98%
0.12% 0.07% 0 Per-minute Jobs
2-b) Show processes cpu history Command
The show processes cpu history command displays in ASCII graphical
form the total CPU usage on the router over a period of time: one minute, one
hour, and 72 hours, displayed in increments of one second, one minute, and one
hour, respectively. Maximum usage is measured and recorded every second;
average usage is calculated on periods over one second.
router#show processes cpu
history
!--- One minute output omitted
6665776865756676676666667667677676766666766767767666566667
6378016198993513709771991443732358689932740858269643922613
100
90
80
*
*
* * * * * *
70 * * ***** * **
***** *** **** ****** * ******* * *
60
#***##*##*#***#####*#*###*****#*###*#*#*##*#*##*#*##*****#
50
##########################################################
40
##########################################################
30
##########################################################
20 ##########################################################
10
##########################################################
0....5....1....1....2....2....3....3....4....4....5....5....
0
5 0 5 0
5 0 5 0
5
CPU% per minute (last 60
minutes)
* = maximum CPU% #
= average CPU%
2-c) The show
processes memory Command:--
The show processes memory command displays information about the
active processes in the router and the corresponding memory used. The following
is a sample output of the show
processes memory command:
Router#show processes memory
Total: 106206400, Used:
7479116, Free: 98727284
PID TTY
Allocated Freed
Holding Getbufs Retbufs Process
0
0 81648 1808
6577644
0 0 *Init*
0
0 572
123196
572
0 0 *Sched*
0 0
10750692 3442000
5812
2813524 0 *Dead*
1
0
276
276
3804
0 0 Load Meter
2 0
228
0
7032
0 0 CEF Scanner
3
0
0
0 6804
0
0 Check heaps
4
0
18444
0
25248
0 0 Chunk Manager
5
0
96
0
6900
0 0 Pool Manager
6
0
276
276
6804
0 0 Timers
7
0
276
276
6804
0 0 Serial Backgroun
8
0
96
0
3900
0 0 OIR Handler
9
0
96
0
6900
0 0 IPC Zone Manager
10
0
0
0
6804
0 0 IPC Periodic Tim
11
0 17728
484
11156
0 0 IPC Seat Manager
12
0
288
136
7092
0 0 ARP Input
....
90
0
0
0 6804
0 0
DHCPD Timer
91
0
152
0
6956
0 0 DHCPD Database
7478196 Total
Note: Due to the way in which show processes memory sorted is implemented in certain Cisco
routers and switches, some devices (such as the Cisco 7304) show the total
value as the sum of the processor memory and IO memory, rather than the total
of the processor memory as shown by show
processes memory.
3). Show Clock:-
Cisco Unity Express uses the
Network Time Protocol (NTP) server for clocking functions. Use the show clock detail command to display the Cisco Unity
Express module clock status.
core_1#show clock
02:07:58.264 EDT Tue Jul 22
2014
4). Show Module:-
Output shows modules present in
Slots of Switch
core_1#show module
Mod
Ports Card
Type
Model
Serial No.
--- -----
-------------------------------------- ------------------ -----------
3
48
SFM-capable 48 port 10/100/1000mb
RJ45 WS-X6548-GE-TX SAL1215M8P5
4
48
SFM-capable 48
port 10/100/1000mb RJ45
WS-X6548-GE-TX SAL1115L9WA
5
48
SFM-capable 48 port
10/100/1000mb RJ45 WS-X6548-GE-TX
SAL1101CU3H
6
48
SFM-capable 48 port 10/100/1000mb RJ45
WS-X6548-GE-TX SAD084105BK
7
2
Supervisor Engine 720
(Hot)
WS-SUP720-BASE SAD084507P9
8
2
Supervisor Engine
720
(Active)
WS-SUP720-BASE
SAD084506UF
9
48
SFM-capable 48
port 10/100/1000mb RJ45
WS-X6548-GE-TX SAD0840009N
Mod
MAC
addresses
Hw
Fw
Sw
Status
---
---------------------------------- ------ ------------ ------------ -------
3
001f.cada.0298 to 001f.cada.02c7
11.3
7.2(1) 8.3(0.156)RO
Ok
4
001b.0cd5.a2e4 to 001b.0cd5.a313
11.1
7.2(1) 8.3(0.156)RO
Ok
5
001a.6d9e.31b0 to 001a.6d9e.31df
11.1
7.2(1)
8.3(0.156)RO
Ok
5). Show History:-
The following is sample output
from the show history command, which lists the commands the
user has entered in mode for this session.
core_1#show history
show module
show history
show cdp neigh
sh history
sh ip arp
6). Show Inventory:-
To display the system inventory
information for a NAM (Network Analysis Module) device, use the show inventory command.
This command is supported on
all NAM platforms.
The show inventory command allows you to view the UDI for
a NAM device. This identity information is stored in the NAM device's
non-volatile memory.
PID—Product
identification (ID) number of the device
core_1#show inventory
NAME: "WS-C6513",
DESCR: "Cisco Systems Catalyst 6500 13-slot Chassis System"
PID:
WS-C6513 ,
VID: , SN: SAL08332806
NAME: "WS-C6K-VTT 1",
DESCR: "VTT FRU 1"
PID:
WS-C6K-VTT , VID: ,
SN: SMT0828D793
NAME: "WS-C6K-VTT 2",
DESCR: "VTT FRU 2"
PID:
WS-C6K-VTT , VID: ,
SN: SMT0828E238
What are VTY ports?
VTY ports are virtual TTY
ports, used to Telnet or SSH into the router over the network. You can use them
to connect to the router to make configuration changes or check the status.
Most routers have five VTY ports, numbered 0 to 4.
That means you can have up to
five concurrent network admins configuring the router at one time. However, you
can easily generate more VTY lines.
7). Show Users:-
core_1#show users
Line
User
Host(s)
Idle Location
* 1 vty
0
abcd
idle
00:00:00 10.159.100.23
Interface
User
Mode
Idle
Peer Address
core_1#show run | in user
username pvault password 7
03345C1A5554114778
username vtyuser password 7
1121491312000F2C09
8). Show Line:-
Lines on Cisco routers are
physical async serial ports on the router (such as a terminal or modem), a
virtual network connection, or another type of serial line on the router. To
see which lines you have on your devices, use the show line command. Here's an
example:
core_1#show line
Tty
Typ Tx/Rx
A Modem Roty AccO AccI
Uses Noise Overruns Int
0
CTY
-
- -
-
-
0
0
0/0 -
* 1
VTY
-
-
-
- -
1616
0
0/0 -
2
VTY
-
-
-
-
-
357
0
0/0 -
3
VTY
-
-
-
-
- 96
0
0/0 -
4
VTY
-
-
-
-
-
28
0
0/0 -
9). Show CDP neighbor:-
CDP will show only directly
connected devices, or neighbors with Local interface & Remote Interface
core_1#show cdp neighbor
Capability Codes: R - Router, T
- Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP,
r - Repeater, P - Phone
Device
ID Local Interface
Holdtme Capability Platform Port ID
FP-4507-MPLS
Gig 13/41
123 R S
I WS-C4507R+Gig 2/1
fp_unixhb_sw1
Gig 5/5
144 S
I WS-C3560G-Gig
0/22
FP_6513_3
Gig 11/13 156
R S
I WS-C6513-EGig 2/3/48
FP_6513_3
Gig 11/14
164 R S
I WS-C6513-EGig 2/4/48
FP_6513_3
Gig 13/17
145 R S
I WS-C6513-EGig 1/4/48
10). Show IP interface brief:-
This command is great for
showing up/down status of IP interfaces, as well as what the IP address is of
each interface. This command displays a brief summary of the interfaces on a
device.
NB_Rtr#show ip interface brief
Interface
IP-Address
OK
? Method
Status
Protocol
GigabitEthernet0/0
10.145.0.27
YES NVRAM
up
up
GigabitEthernet0/1
unassigned
YES
NVRAM up
up
GigabitEthernet0/1.10
10.145.225.129
YES
NVRAM
up
up
Loopback0
10.145.0.195
YES
NVRAM
up
up
11). Show ip protocol summary:-
This command will show you all
the current routing protocols running on the router.
NB_Rtr#show ip protocol summary
Index Process Name
0
connected
1
static
2 ospf
100
*** IP Routing is NSF aware ***
12). Show Log:-
Show log will display your currently configured
logging settings and the buffered log messages.
core_1#show log
Syslog logging: enabled (0
messages dropped, 10 messages rate-limited, 2937 flus
hes, 0 overruns)
Console logging: level
debugging, 66054 messages logged
Monitor logging: level
debugging, 81 messages logged
Buffer logging: level
debugging, 61345 messages logged
Exception Logging: size (4096
bytes)
Count and timestamp logging
messages: disabled
13). Show IP ARP:-
Output shows the IP to MAC
Address resolution for all
the learned IP’s at the device, with the interface from which MAC Address is
learned.
In the following example, the show ip arp command lists all ARP entries by
interface for this router:
core_1#show ip arp
Protocol
Address
Age (min) Hardware Addr
Type Interface
Internet
10.146.114.234
20
0021.5aa8.f05a ARPA
Vlan114
Internet
10.146.22.142
178
000b.fcfe.1b02
ARPA Vlan322
Internet
10.146.8.144
2
1cc1.def1.dd48 ARPA
Vlan8
Internet
10.146.4.156
19
e411.5b96.52d9 ARPA Vlan4
Internet
10.146.114.235
20
0021.5aa8.f05a ARPA
Vlan114
Internet
10.146.7.158
228
001a.4bff.5ac6
ARPA Vlan7
Internet
10.146.22.143
137
000b.fcfe.1b02
ARPA Vlan322
Internet
10.146.8.145
8
001c.c415.99fb ARPA
Vlan8
Internet
10.146.4.157
180
0050.569f.0094
ARPA Vlan4
14). Show mac-address-table:-
core_1#show mac-address-table
Legend: * - primary entry
age - seconds since last seen
n/a - not available
vlan mac
address type
learn
age
ports
------+----------------+--------+-----+----------+--------------------------
* 322
000b.fcfe.1b04 dynamic
Yes
0 Po19
* 3
0100.5e01.0103 static
Yes -
* 5
0021.5a4f.c6b8 dynamic
Yes
0 Gi6/48
* 576
3333.0000.0001 static
Yes -
Switch,Stby-Switch
* 99
001c.7f40.16ef dynamic
Yes 0
Po29
15). Show mac-address-table
address:-
To get the switch port where the
mac address is learned, you can use the following command
core_1#show mac-address-table
address 0022.640b.0bc0
Legend: * - primary entry
age - seconds since last seen
n/a - not available
vlan mac
address
type learn
age ports
------+----------------+--------+-----+----------+--------------------------
Supervisor:
* 3
0022.640b.0bc0 dynamic
Yes
0 Po18
Supervisor:
* 3
0022.640b.0bc0 dynamic
Yes
0 Po18
16). Show interfaces link:-
"show interface link"
command will display the down time for each port.
To display how long a cable has
been disconnected from an interface, use the show
interfaces link command:
If the interface state is up,
the command displays 0:00. If the interface state is down, the time (in hours,
minutes, and seconds) is displayed.
Example
Switch# show interfaces link
17). Show Interfaces Status:-
Juniper switches don't support
"show interface status"
Cisco's command displayed some
useful information. port name, Status , vlan, Duplex, speed, type etc.
core_1#show interfaces status
Port
Name Status
Vlan Duplex Speed
Type
Gi3/1 G3/1
Connection to not connect
61
auto auto 10/100/1000BaseT
Gi3/2 Connection
for TOR connected
3 a-full
a-1000 10/100/1000BaseT
Gi3/3 Gi3/3
Connection f connected trunk
full 1000 10/100/1000BaseT
Gi3/4 Gi3/4
Connection f connected
trunk full 1000
10/100/1000BaseT
Gi3/5 Gi3/5
Connection f connected
trunk full 1000
10/100/1000BaseT
18). Show Interfaces Summary:-
Output shows the Live Traffic
running on the Interfaces
Hi Readers, In this post
i am gonna write about 19 must known SHOW command for CISCO command line
interface that will help you while working in real-world networking
environment.
All configuration which i am
gonna show here are extracted from real-work environment
If u have any concern please
feel free to mail us capecisco@gmail.com
Thanks to Sumit Sharma Admin of
networkproxy.wordpress.com For his dedicated work !
The show version command
displays different information depending on the type of device you use. This command gives uptime, info about
software and hardware and a few other details.
● IOS version
● System uptime
● Image filename
● Type of processor
● Amount of RAM
● Number of ports on the switch
● Amount of flash memory
● MAC address
● Serial number
1-a)
Show version | in uptime
This
command shows uptime of devices.
Example:-
core_1#show version | in uptime
core_1 uptime is 1 year, 23
weeks, 5 days, 3 hours, 22 minutes
2). Show Processes CPU history
➢ The show
processes CPU command to
display detailed CPU utilization statistics on these processes.
➢ The show
processes memory command to
show the amount of memory used.
The show processes CPU command displays information about the
active processes in the router and their corresponding CPU utilization
statistics. The following is a sample output of the show processes CPU command:
router#show processes cpu
CPU utilization for five
seconds: 8%/4%; one minute: 6%; five minutes: 5%
PID Runtime(uS)
Invoked uSecs 5Sec 1Min 5Min
TTY Process
1
384 32789 11
0.00% 0.00% 0.00% 0 Load Meter
2
2752 1179 2334
0.73% 1.06% 0.29% 0 Exec
3
318592 5273 60419 0.00%
0.15% 0.17% 0 Check heaps
4
4 1
4000 0.00% 0.00% 0.00% 0 Pool Manager
5
6472 6568 985
0.00% 0.00% 0.00% 0 ARP Input
6
10892 9461 1151
0.00% 0.00% 0.00% 0 IP Input
7
67388 53244 1265
0.16% 0.04% 0.02% 0 CDP Protocol
8
145520 166455 874 0.40%
0.29% 0.29% 0 IP Background
9
3356 1568 2140
0.08% 0.00% 0.00% 0 BOOTP Server
10
32 5469
5 0.00% 0.00% 0.00% 0 Net Background
11
42256 163623 258 0.16%
0.02% 0.00% 0 Per-Second Jobs
12
189936 163623 1160 0.00%
0.04% 0.05% 0 Net Periodic
13
3248 6351 511
0.00% 0.00% 0.00% 0 Net Input
14
168 32790 5
0.00% 0.00% 0.00% 0 Compute load avgs
15
152408 2731 55806 0.98%
0.12% 0.07% 0 Per-minute Jobs
2-b) Show processes cpu history Command
The show processes cpu history command displays in ASCII graphical
form the total CPU usage on the router over a period of time: one minute, one
hour, and 72 hours, displayed in increments of one second, one minute, and one
hour, respectively. Maximum usage is measured and recorded every second;
average usage is calculated on periods over one second.
router#show processes cpu
history
!--- One minute output omitted
6665776865756676676666667667677676766666766767767666566667
6378016198993513709771991443732358689932740858269643922613
100
90
80
*
*
* * * * * *
70 * * ***** * **
***** *** **** ****** * ******* * *
60
#***##*##*#***#####*#*###*****#*###*#*#*##*#*##*#*##*****#
50
##########################################################
40
##########################################################
30
##########################################################
20 ##########################################################
10
##########################################################
0....5....1....1....2....2....3....3....4....4....5....5....
0
5 0 5 0
5 0 5 0
5
CPU% per minute (last 60
minutes)
* = maximum CPU% #
= average CPU%
2-c) The show
processes memory Command:--
The show processes memory command displays information about the
active processes in the router and the corresponding memory used. The following
is a sample output of the show
processes memory command:
Router#show processes memory
Total: 106206400, Used:
7479116, Free: 98727284
PID TTY
Allocated Freed
Holding Getbufs Retbufs Process
0
0 81648 1808
6577644
0 0 *Init*
0
0 572
123196
572
0 0 *Sched*
0 0
10750692 3442000
5812
2813524 0 *Dead*
1
0
276
276
3804
0 0 Load Meter
2 0
228
0
7032
0 0 CEF Scanner
3
0
0
0 6804
0
0 Check heaps
4
0
18444
0
25248
0 0 Chunk Manager
5
0
96
0
6900
0 0 Pool Manager
6
0
276
276
6804
0 0 Timers
7
0
276
276
6804
0 0 Serial Backgroun
8
0
96
0
3900
0 0 OIR Handler
9
0
96
0
6900
0 0 IPC Zone Manager
10
0
0
0
6804
0 0 IPC Periodic Tim
11
0 17728
484
11156
0 0 IPC Seat Manager
12
0
288
136
7092
0 0 ARP Input
....
90
0
0
0 6804
0 0
DHCPD Timer
91
0
152
0
6956
0 0 DHCPD Database
7478196 Total
Note: Due to the way in which show processes memory sorted is implemented in certain Cisco
routers and switches, some devices (such as the Cisco 7304) show the total
value as the sum of the processor memory and IO memory, rather than the total
of the processor memory as shown by show
processes memory.
3). Show Clock:-
Cisco Unity Express uses the
Network Time Protocol (NTP) server for clocking functions. Use the show clock detail command to display the Cisco Unity
Express module clock status.
core_1#show clock
02:07:58.264 EDT Tue Jul 22
2014
4). Show Module:-
Output shows modules present in
Slots of Switch
core_1#show module
Mod
Ports Card
Type
Model
Serial No.
--- -----
-------------------------------------- ------------------ -----------
3
48
SFM-capable 48 port 10/100/1000mb
RJ45 WS-X6548-GE-TX SAL1215M8P5
4
48
SFM-capable 48
port 10/100/1000mb RJ45
WS-X6548-GE-TX SAL1115L9WA
5
48
SFM-capable 48 port
10/100/1000mb RJ45 WS-X6548-GE-TX
SAL1101CU3H
6
48
SFM-capable 48 port 10/100/1000mb RJ45
WS-X6548-GE-TX SAD084105BK
7
2
Supervisor Engine 720
(Hot)
WS-SUP720-BASE SAD084507P9
8
2
Supervisor Engine
720
(Active)
WS-SUP720-BASE
SAD084506UF
9
48
SFM-capable 48
port 10/100/1000mb RJ45
WS-X6548-GE-TX SAD0840009N
Mod
MAC
addresses
Hw
Fw
Sw
Status
---
---------------------------------- ------ ------------ ------------ -------
3
001f.cada.0298 to 001f.cada.02c7
11.3
7.2(1) 8.3(0.156)RO
Ok
4
001b.0cd5.a2e4 to 001b.0cd5.a313
11.1
7.2(1) 8.3(0.156)RO
Ok
5
001a.6d9e.31b0 to 001a.6d9e.31df
11.1
7.2(1)
8.3(0.156)RO
Ok
5). Show History:-
The following is sample output
from the show history command, which lists the commands the
user has entered in mode for this session.
core_1#show history
show module
show history
show cdp neigh
sh history
sh ip arp
6). Show Inventory:-
To display the system inventory
information for a NAM (Network Analysis Module) device, use the show inventory command.
This command is supported on
all NAM platforms.
The show inventory command allows you to view the UDI for
a NAM device. This identity information is stored in the NAM device's
non-volatile memory.
core_1#show inventory
NAME: "WS-C6513",
DESCR: "Cisco Systems Catalyst 6500 13-slot Chassis System"
PID:
WS-C6513 ,
VID: , SN: SAL08332806
NAME: "WS-C6K-VTT 1",
DESCR: "VTT FRU 1"
PID:
WS-C6K-VTT , VID: ,
SN: SMT0828D793
NAME: "WS-C6K-VTT 2",
DESCR: "VTT FRU 2"
PID:
WS-C6K-VTT , VID: ,
SN: SMT0828E238
What are VTY ports?
VTY ports are virtual TTY
ports, used to Telnet or SSH into the router over the network. You can use them
to connect to the router to make configuration changes or check the status.
Most routers have five VTY ports, numbered 0 to 4.
That means you can have up to
five concurrent network admins configuring the router at one time. However, you
can easily generate more VTY lines.
7). Show Users:-
core_1#show users
Line
User
Host(s)
Idle Location
* 1 vty
0
abcd
idle
00:00:00 10.159.100.23
Interface
User
Mode
Idle
Peer Address
core_1#show run | in user
username pvault password 7
03345C1A5554114778
username vtyuser password 7
1121491312000F2C09
8). Show Line:-
Lines on Cisco routers are
physical async serial ports on the router (such as a terminal or modem), a
virtual network connection, or another type of serial line on the router. To
see which lines you have on your devices, use the show line command. Here's an
example:
core_1#show line
Tty
Typ Tx/Rx
A Modem Roty AccO AccI
Uses Noise Overruns Int
0
CTY
-
- -
-
-
0
0
0/0 -
* 1
VTY
-
-
-
- -
1616
0
0/0 -
2
VTY
-
-
-
-
-
357
0
0/0 -
3
VTY
-
-
-
-
- 96
0
0/0 -
4
VTY
-
-
-
-
-
28
0
0/0 -
9). Show CDP neighbor:-
CDP will show only directly
connected devices, or neighbors with Local interface & Remote Interface
core_1#show cdp neighbor
Capability Codes: R - Router, T
- Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP,
r - Repeater, P - Phone
Device
ID Local Interface
Holdtme Capability Platform Port ID
FP-4507-MPLS
Gig 13/41
123 R S
I WS-C4507R+Gig 2/1
fp_unixhb_sw1
Gig 5/5
144 S
I WS-C3560G-Gig
0/22
FP_6513_3
Gig 11/13 156
R S
I WS-C6513-EGig 2/3/48
FP_6513_3
Gig 11/14
164 R S
I WS-C6513-EGig 2/4/48
FP_6513_3
Gig 13/17
145 R S
I WS-C6513-EGig 1/4/48
10). Show IP interface brief:-
This command is great for
showing up/down status of IP interfaces, as well as what the IP address is of
each interface. This command displays a brief summary of the interfaces on a
device.
NB_Rtr#show ip interface brief
Interface
IP-Address
OK
? Method
Status
Protocol
GigabitEthernet0/0
10.145.0.27
YES NVRAM
up
up
GigabitEthernet0/1
unassigned
YES
NVRAM up
up
GigabitEthernet0/1.10
10.145.225.129
YES
NVRAM
up
up
Loopback0
10.145.0.195
YES
NVRAM
up
up
11). Show ip protocol summary:-
This command will show you all
the current routing protocols running on the router.
NB_Rtr#show ip protocol summary
Index Process Name
0
connected
1
static
2 ospf
100
*** IP Routing is NSF aware ***
12). Show Log:-
Show log will display your currently configured
logging settings and the buffered log messages.
core_1#show log
Syslog logging: enabled (0
messages dropped, 10 messages rate-limited, 2937 flus
hes, 0 overruns)
Console logging: level
debugging, 66054 messages logged
Monitor logging: level
debugging, 81 messages logged
Buffer logging: level
debugging, 61345 messages logged
Exception Logging: size (4096
bytes)
Count and timestamp logging
messages: disabled
13). Show IP ARP:-
Output shows the IP to MAC
Address resolution for all
the learned IP’s at the device, with the interface from which MAC Address is
learned.
In the following example, the show ip arp command lists all ARP entries by
interface for this router:
core_1#show ip arp
Protocol
Address
Age (min) Hardware Addr
Type Interface
Internet
10.146.114.234
20
0021.5aa8.f05a ARPA
Vlan114
Internet
10.146.22.142
178
000b.fcfe.1b02
ARPA Vlan322
Internet
10.146.8.144
2
1cc1.def1.dd48 ARPA
Vlan8
Internet
10.146.4.156
19
e411.5b96.52d9 ARPA Vlan4
Internet
10.146.114.235
20
0021.5aa8.f05a ARPA
Vlan114
Internet
10.146.7.158
228
001a.4bff.5ac6
ARPA Vlan7
Internet
10.146.22.143
137
000b.fcfe.1b02
ARPA Vlan322
Internet
10.146.8.145
8
001c.c415.99fb ARPA
Vlan8
Internet
10.146.4.157
180
0050.569f.0094
ARPA Vlan4
14). Show mac-address-table:-
core_1#show mac-address-table
Legend: * - primary entry
age - seconds since last seen
n/a - not available
vlan mac
address type
learn
age
ports
------+----------------+--------+-----+----------+--------------------------
* 322
000b.fcfe.1b04 dynamic
Yes
0 Po19
* 3
0100.5e01.0103 static
Yes -
* 5
0021.5a4f.c6b8 dynamic
Yes
0 Gi6/48
* 576
3333.0000.0001 static
Yes -
Switch,Stby-Switch
* 99
001c.7f40.16ef dynamic
Yes 0
Po29
15). Show mac-address-table
address:-
To get the switch port where the
mac address is learned, you can use the following command
core_1#show mac-address-table
address 0022.640b.0bc0
Legend: * - primary entry
age - seconds since last seen
n/a - not available
vlan mac
address
type learn
age ports
------+----------------+--------+-----+----------+--------------------------
Supervisor:
* 3
0022.640b.0bc0 dynamic
Yes
0 Po18
Supervisor:
* 3
0022.640b.0bc0 dynamic
Yes
0 Po18
16). Show interfaces link:-
"show interface link"
command will display the down time for each port.
To display how long a cable has
been disconnected from an interface, use the show
interfaces link command:
If the interface state is up,
the command displays 0:00. If the interface state is down, the time (in hours,
minutes, and seconds) is displayed.
Example
Switch# show interfaces link
17). Show Interfaces Status:-
Juniper switches don't support
"show interface status"
Cisco's command displayed some
useful information. port name, Status , vlan, Duplex, speed, type etc.
core_1#show interfaces status
Port
Name Status
Vlan Duplex Speed
Type
Gi3/1 G3/1
Connection to not connect
61
auto auto 10/100/1000BaseT
Gi3/2 Connection
for TOR connected
3 a-full
a-1000 10/100/1000BaseT
Gi3/3 Gi3/3
Connection f connected trunk
full 1000 10/100/1000BaseT
Gi3/4 Gi3/4
Connection f connected
trunk full 1000
10/100/1000BaseT
Gi3/5 Gi3/5
Connection f connected
trunk full 1000
10/100/1000BaseT
18). Show Interfaces Summary:-
Output shows the Live Traffic
running on the Interfaces
core_1#show interfaces summary
*: interface is up
IHQ: pkts in input hold
queue IQD: pkts dropped from input queue
OHQ: pkts in output hold
queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)
RXPS: rx rate (pkts/sec)
TXBS: tx rate
(bits/sec) TXPS: tx rate
(pkts/sec)
TRTL: throttle count
Interface
IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
---------------------------------------------------------------------
Vlan1
0 0 0
0 0 0 0
0 0
*
Vlan2
0 0 0
0 0 0 0
0 0
*
Vlan3
1 496350 0 0 288455000 25803
24671000 11288 23 918
*
Vlan4
0 139620274 0 0 168740000 21020
48100000 11620 1247241
19). TRACE ROUTE:-
Trace route simply shows all
the Layer3 Hops/ Devices, which comes Between Source & Destination
Traceroute works by sending packets with gradually
increasing TTL value, starting with TTL value of 1. The first router receives
the packet, decrements the TTL value and drops the packet because it then has
TTL value zero. The router sends an ICMP Time Exceeded message back to the
source.
core_1#show interfaces summary
*: interface is up
IHQ: pkts in input hold
queue IQD: pkts dropped from input queue
OHQ: pkts in output hold
queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)
RXPS: rx rate (pkts/sec)
TXBS: tx rate
(bits/sec) TXPS: tx rate
(pkts/sec)
TRTL: throttle count
Interface
IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
---------------------------------------------------------------------
Vlan1
0 0 0
0 0 0 0
0 0
*
Vlan2
0 0 0
0 0 0 0
0 0
*
Vlan3
1 496350 0 0 288455000 25803
24671000 11288 23 918
*
Vlan4
0 139620274 0 0 168740000 21020
48100000 11620 1247241
19). TRACE ROUTE:-
Trace route simply shows all
the Layer3 Hops/ Devices, which comes Between Source & Destination
Traceroute works by sending packets with gradually
increasing TTL value, starting with TTL value of 1. The first router receives
the packet, decrements the TTL value and drops the packet because it then has
TTL value zero. The router sends an ICMP Time Exceeded message back to the
source.
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