80 0 2 0 0.00% 0.00% 0.00% 0 IP Input
R1#show processes cpu | include ^CPU|IP Input
CPU utilization for five seconds: 1%/0%; one minute: 0%; five minutes: 0%
80 0 2 0 0.00% 0.00% 0.00% 0 IP Input
R1#show processes cpu | include ^CPU|PID|IP Input
CPU utilization for five seconds: 0%/0%; one minute: 1%; five minutes: 0%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
80 0 3 0 0.00% 0.00% 0.00% 0 IP Input
R1#show inter fas 0/0 | in ^Fas|MTU|Duplex
FastEthernet0/0 is administratively down, line protocol is down
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
R1#show inter fas 0/0 | in ^Fas|MTU|duplex
FastEthernet0/0 is administratively down, line protocol is down
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
Half-duplex, 10Mb/s, 100BaseTX/FX
FastEthernet0/0 is administratively down, line protocol is down
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
Half-duplex, 10Mb/s, 100BaseTX/FX
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 output errors, 0 collisions, 0 interface resets
R1#show inter fas 0/0 | in ^Fas|MTU|duplex|packets
FastEthernet0/0 is administratively down, line protocol is down
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
Half-duplex, 10Mb/s, 100BaseTX/FX
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
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
R1#show inter fas 0/0 | in ^Fas|MTU|duplex|errors|packets
FastEthernet0/0 is administratively down, line protocol is down
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
Half-duplex, 10Mb/s, 100BaseTX/FX
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
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
R1#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
R2.lab.local Fas 0/0 167 R S I 3725 Fas 0/0
R3.lab.local Fas 0/1 167 R S I 3725 Fas 0/0
R4.lab.local Fas 0/1 167 R S I 3725 Fas 0/0
R5.lab.local Fas 1/1 167 R S I 3725 Fas 0/0
R6.lab.local Fas 1/1 167 R S I 3725 Fas 0/0
R7.lab.local Fas 0/1 167 R S I 3725 Fas 0/0
R8.lab.local Fas 0/1 167 R S I 3725 Fas 0/0
R9.lab.local Fas 0/1 167 R S I 3725 Fas 0/0
R1#show cdp neighbors | include ^Device|R2
Device ID Local Intrfce Holdtme Capability Platform Port ID
R2.lab.local Fas 0/0 148 R S I 3725 Fas 0/0
R1#show interfaces | in (is)
FastEthernet0/0 is up, line protocol is up
Hardware is Gt96k FE, address is c200.1924.0000 (bia c200.1924.0000)
Internet address is 10.10.10.1/24
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
R1#show interfaces | in ( is )
FastEthernet0/0 is up, line protocol is up
Hardware is Gt96k FE, address is c200.1924.0000 (bia c200.1924.0000)
Internet address is 10.10.10.1/24
show run | i ^interface|^_ip address
! Gives you the every line in your running config that starts with (that’s what the ^ is all about) “interface” or ” ip address”, essentially giving you all of your interface IP’s in an IOS-pastable format. The underscore represents a space. Useful for displaying IP addresses with their associated masks and interfaces.
show ip interf brief | e unassigned
! Shows you all of the IP-capable interfaces on the box, except for the ones that have not been assigned an IP address. I use this often, especially on big switch/routers where most of the physical interfaces do not have an IP addresses, but the SVIs do.
show run | i ip route.*Serial1/1
! Shows you all static routes in your configuration pointing out Serial1/1, no matter what they are. Substitute your own interface name. Useful if you’re doing clean up after decommissioning an interface where you didn’t run a dynamic routing protocol.
show interf status | i Gi[2-6]/20
! Shows you the status of all port 20s in slots 2-6 of a chassis with gig cards. Putting the 2-6 in square brackets is a regex telling the parser that any character that’s 2 through 6 inclusive is a match.
show interf status | i Gi[246]/20
! Shows you the status of all port 20s in slots 2, 4, and 6 of a chassis with gig cards. Here, [246] tells the parser that values 2, 4, or 6 are all matches for that position.
show interf status | i Gi./2_
! Shows you the status of all ports ending in 2. The underscore represents a space, so this makes sure you don’t get a match for “20″ or “22″ when all you really want is “2″. The dot is a wildcard, allowing for any single character in that position. If you want to match a random number of additional wildcard characters, follow the dot with an asterisk.
show interf status | i Gi7/(29|3[0-9])
! Shows you the status of all ports in slot 7, 29 – 39 inclusive. You get the “Gi7/”, right? No regex magic there. The “29|” could be translated “29 or”. The “3[0-9]” could be translated “3 followed by any of the digits 0 through 9 inclusive”. Put it all together, and you get a match for any line containing Gi7/, followed by 29 or 30-39.
show interf status | i _101_
! Displays all lines contain the number 101 with a leading and trailing space. Useful if you want to show all the ports in a particular VLAN, in this case 101.
show inter status | i a-100_|_100_
! Displays all the ports that are running at 100Mbps, whether statically defined or auto-negotiated. Will also match interfaces in Vlan100, though. Sadly, Cisco does not allow you to pipe to “include” and then further pipe to “exclude”, such as you can do in *nix by nesting piped greps. If you could nest your pipe commands in the IOS CLI, there could be some very interesting output filters generated.
show interface | i line|escription|bits
! Presents all interfaces, their descriptions, and the bits per second flowing through them, both input and output. Does not distinguish between up/down status.
