Switch Control

Manuals

3750 reference http://www.cisco.com/en/US/products/hw/switches/ps5023/products_command_reference_chapter09186a00801f5ffb.html#2789851

Finding which IPs are on a port

List MACs

switch-p1> en switch-p1#show mac-address-table Dynamic Address Count: 53 Secure Address (User-defined) Count: 0 Static Address (User-defined) Count: 0 System Self Address Count: 48 Total MAC addresses: 101 Maximum MAC addresses: 2048 Non-static Address Table: Destination Address Address Type VLAN Destination Port

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0002.b315.3201 Dynamic 1 FastEthernet0/8 0002.b3a6.f354 Dynamic 1 FastEthernet0/1 0002.b3bb.45fe Dynamic 1 FastEthernet0/7 0002.b3e9.226b Dynamic 1 FastEthernet0/4 0002.b3e9.868c Dynamic 1 FastEthernet0/13 0002.b9b1.4c01 Dynamic 1 FastEthernet0/24 0004.75a1.91f1 Dynamic 1 FastEthernet0/24 0006.5b3d.80fb Dynamic 1 FastEthernet0/1 0006.d78a.c798 Dynamic 1 FastEthernet0/1 0007.e90d.e4c9 Dynamic 1 FastEthernet0/24 0007.e95b.c645 Dynamic 1 FastEthernet0/1 000c.f1d3.a7f9 Dynamic 1 FastEthernet0/1 000c.f1dc.f1ce Dynamic 1 FastEthernet0/3 000c.f1fa.71d7 Dynamic 1 FastEthernet0/24 000d.56fe.ad72 Dynamic 1 FastEthernet0/24 000e.0c59.c1a6 Dynamic 3 FastEthernet0/22 000f.1f64.43bc Dynamic 1 FastEthernet0/24 0010.e002.473b Dynamic 1 FastEthernet0/24 0011.0924.1d91 Dynamic 1 FastEthernet0/15 0011.1108.58a6 Dynamic 1 FastEthernet0/24 0011.1119.791e Dynamic 1 FastEthernet0/24 0020.ed91.f85d Dynamic 1 FastEthernet0/1 0030.4828.9d50 Dynamic 1 FastEthernet0/1 0030.4841.5246 Dynamic 1 FastEthernet0/5 0030.4870.8332 Dynamic 1 FastEthernet0/1 0030.4870.8898 Dynamic 1 FastEthernet0/1 0030.4871.b911 Dynamic 1 FastEthernet0/23 0050.455b.b27e Dynamic 1 FastEthernet0/14 0050.50be.f9c8 Dynamic 3 FastEthernet0/22 0060.089a.8f70 Dynamic 1 FastEthernet0/24 0090.27f9.0abf Dynamic 1 FastEthernet0/2 0090.27f9.1b53 Dynamic 1 FastEthernet0/24 00b0.d020.b557 Dynamic 1 FastEthernet0/9 00b0.d020.df60 Dynamic 1 FastEthernet0/1 00b0.d020.fc4a Dynamic 1 FastEthernet0/1 00b0.d049.125b Dynamic 1 FastEthernet0/1 00b0.d049.16a4 Dynamic 1 FastEthernet0/1 00b0.d049.98e4 Dynamic 1 FastEthernet0/24 00b0.d049.a43e Dynamic 1 FastEthernet0/24 00b0.d049.d03c Dynamic 1 FastEthernet0/1 00b0.d049.d61f Dynamic 1 FastEthernet0/1 00b0.d049.e643 Dynamic 1 FastEthernet0/1 00b0.d068.1911 Dynamic 1 FastEthernet0/10 00b0.d068.490b Dynamic 1 FastEthernet0/24 00b0.d068.4b01 Dynamic 1 FastEthernet0/12 00b0.d068.7599 Dynamic 1 FastEthernet0/24 00b0.d068.8451 Dynamic 1 FastEthernet0/6 00b0.d0b0.306b Dynamic 1 FastEthernet0/1 00b0.d0b0.4020 Dynamic 1 FastEthernet0/11 00b0.d0b0.70bd Dynamic 1 FastEthernet0/1 00b0.d0b0.c5a4 Dynamic 1 FastEthernet0/1 00b0.d0b0.f533 Dynamic 1 FastEthernet0/24 0800.20c2.1de3 Dynamic 3 FastEthernet0/22

Shutting down a port

Quick commands:

enable
configure terminal
interface fastEthernet 0/17
shutdown
exit
exit

Turn back on:

enable
configure terminal
interface fastEthernet 0/17
no shutdown
exit
exit

Sample output:

switch-p1>enable
switch-p1#show interfaces fastEthernet 0/17
FastEthernet0/17 is down, line protocol is down
  Hardware is Fast Ethernet, address is 0050.d1d8.94d1 (bia 0050.d1d8.94d1)
  MTU 1500 bytes, BW 0 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set, keepalive not set
  Duplex setting unknown, Unknown Speed, 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
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     1 packets input, 64 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     1 packets output, 64 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
switch-p1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
switch-p1(config)#interface fastEthernet 0/17
switch-p1(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/17, changed state to administratively down
switch-p1(config-if)#no shutdown
%LINK-3-UPDOWN: Interface FastEthernet0/17, changed state to up
%LINK-3-UPDOWN: Interface FastEthernet0/17, changed state to down
switch-p1(config-if)#exit
switch-p1(config)#exit
switch-p1#

Show port stats

For one port:

switch-p1> en
switch-p1#show int FastEthernet0/7
FastEthernet0/7 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0050.d1d8.94c7 (bia 0050.d1d8.94c7)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set, keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 9000 bits/sec, 20 packets/sec
     137101258 packets input, 2869037621 bytes, 0 no buffer
     Received 326 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 26 ignored, 0 abort
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     330219386 packets output, 3304714878 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

For all ports:

switch-p1> en
switch-p1#show interfaces
VLAN1 is up, line protocol is down
  Hardware is CPU Interface, address is 0050.d1d8.94c0 (bia 0050.d1d8.94c0)
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set, keepalive not set
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:10, output 00:00:10, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     137465 packets input, 10297233 bytes, 0 no buffer
     Received 89751 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 302 ignored, 0 abort
     0 input packets with dribble condition detected
     52396 packets output, 6878747 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
VLAN3 is up, line protocol is up
  Hardware is CPU Interface, address is 0050.d1d8.94c0 (bia 0050.d1d8.94c0)
  Internet address is 10.1.4.5/24
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
  Encapsulation ARPA
  ARP type: ARPA, ARP Timeout 04:00:00
FastEthernet0/1 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0050.d1d8.94c1 (bia 0050.d1d8.94c1)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 3/255
  Encapsulation ARPA, loopback not set, keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:37, output 00:00:53, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 4593000 bits/sec, 762 packets/sec
  5 minute output rate 1240000 bits/sec, 689 packets/sec
     260548696 packets input, 2531757155 bytes, 0 no buffer
     Received 22173 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 333 ignored, 0 abort
     0 watchdog, 2942 multicast
     0 input packets with dribble condition detected
     241281983 packets output, 3622221090 bytes, 0 underruns
     0 output errors, 0 collisions, 15 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
FastEthernet0/2 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0050.d1d8.94c2 (bia 0050.d1d8.94c2)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set, keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:54, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 146000 bits/sec, 108 packets/sec
  5 minute output rate 98000 bits/sec, 114 packets/sec
     22830604 packets input, 905395220 bytes, 0 no buffer
     Received 9845 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 10 ignored, 0 abort
     0 watchdog, 3 multicast
     0 input packets with dribble condition detected
     23910838 packets output, 3702256298 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
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