The show interface brief command, issued at the elevated command prompt will show the status of all ports on the switch/router and also show your vlan interfaces you have created.
tyrion#show ip interface brief Interface IP-Address OK? Method Status Protocol Vlan1 unassigned YES NVRAM up down Vlan2 172.18.31.128 YES NVRAM up up GigabitEthernet0/1 unassigned YES unset down down GigabitEthernet0/2 unassigned YES unset down down GigabitEthernet0/3 unassigned YES unset down down GigabitEthernet0/4 unassigned YES unset down down GigabitEthernet0/5 unassigned YES unset down down GigabitEthernet0/6 unassigned YES unset down down GigabitEthernet0/7 unassigned YES unset down down GigabitEthernet0/8 unassigned YES unset down down GigabitEthernet0/9 unassigned YES unset down down GigabitEthernet0/10 unassigned YES unset down down GigabitEthernet0/11 unassigned YES unset down down GigabitEthernet0/12 unassigned YES unset down down GigabitEthernet0/13 unassigned YES unset down down GigabitEthernet0/14 unassigned YES unset down down GigabitEthernet0/15 unassigned YES unset down down GigabitEthernet0/16 unassigned YES unset down down GigabitEthernet0/17 unassigned YES unset down down GigabitEthernet0/18 unassigned YES unset down down GigabitEthernet0/19 unassigned YES unset down down GigabitEthernet0/20 unassigned YES unset down down GigabitEthernet0/21 unassigned YES unset down down GigabitEthernet0/22 unassigned YES unset down down GigabitEthernet0/23 unassigned YES unset down down GigabitEthernet0/24 unassigned YES unset down down GigabitEthernet0/25 unassigned YES unset down down GigabitEthernet0/26 unassigned YES unset down down GigabitEthernet0/27 unassigned YES unset down down GigabitEthernet0/28 unassigned YES unset down down GigabitEthernet0/29 unassigned YES unset down down GigabitEthernet0/30 unassigned YES unset down down GigabitEthernet0/31 unassigned YES unset down down GigabitEthernet0/32 unassigned YES unset down down GigabitEthernet0/33 unassigned YES unset down down GigabitEthernet0/34 unassigned YES unset down down GigabitEthernet0/35 unassigned YES unset down down GigabitEthernet0/36 unassigned YES unset down down GigabitEthernet0/37 unassigned YES unset down down GigabitEthernet0/38 unassigned YES unset down down GigabitEthernet0/39 unassigned YES unset down down GigabitEthernet0/40 unassigned YES unset down down GigabitEthernet0/41 unassigned YES unset down down GigabitEthernet0/42 unassigned YES unset down down GigabitEthernet0/43 unassigned YES unset up up GigabitEthernet0/44 unassigned YES unset up up GigabitEthernet0/45 unassigned YES unset down down GigabitEthernet0/46 unassigned YES unset down down GigabitEthernet0/47 unassigned YES unset down down GigabitEthernet0/48 unassigned YES unset down down |
This command will show the arp table.
tyrion#show ip arp Protocol Address Age (min) Hardware Addr Type Interface Internet 172.18.31.128 - ec44.763d.9041 ARPA Vlan2 Internet 172.18.31.1 11 0026.f1f5.0300 ARPA Vlan2 Internet 172.18.31.2 11 0022.19b1.a18c ARPA Vlan2 |
And show the terminal information with this command.
tyrion#show terminal Line 0, Location: "", Type: "" Length: 24 lines, Width: 80 columns Baud rate (TX/RX) is 9600/9600, no parity, 2 stopbits, 8 databits Status: PSI Enabled, Ready, Active, Ctrl-c Enabled, Automore On 0x40000 Capabilities: none Modem state: Ready Special Chars: Escape Hold Stop Start Disconnect Activation ^^x none - - none Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch 00:10:00 never none not set Idle Session Disconnect Warning never Login-sequence User Response 00:00:30 Autoselect Initial Wait not set Modem type is unknown. Session limit is not set. Time since activation: 00:22:34 Editing is enabled. History is enabled, history size is 20. DNS resolution in show commands is enabled Full user help is disabled Allowed input transports are none. Allowed output transports are telnet ssh. Preferred transport is telnet. No output characters are padded No special data dispatching characters |
The show ip traffic command will display information about the ip traffic traveling through your switch.
tyrion#show ip traffic IP statistics: Rcvd: 1410 total, 1035 local destination 0 format errors, 0 checksum errors, 0 bad hop count 0 unknown protocol, 375 not a gateway 0 security failures, 0 bad options, 127 with options Opts: 0 end, 0 nop, 0 basic security, 0 loose source route 0 timestamp, 0 extended security, 0 record route 0 stream ID, 0 strict source route, 127 alert, 0 cipso, 0 ump 0 other Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble 0 fragmented, 0 couldn't fragment Bcast: 1025 received, 0 sent Mcast: 0 received, 0 sent Sent: 10 generated, 0 forwarded Drop: 0 encapsulation failed, 0 unresolved, 0 no adjacency 0 no route, 0 unicast RPF, 0 forced drop 0 options denied, 0 source IP address zero ICMP statistics: Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 0 unreachable 0 echo, 10 echo reply, 0 mask requests, 0 mask replies, 0 quench 0 parameter, 0 timestamp, 0 info request, 0 other 0 irdp solicitations, 0 irdp advertisements Sent: 0 redirects, 0 unreachable, 10 echo, 0 echo reply 0 mask requests, 0 mask replies, 0 quench, 0 timestamp 0 info reply, 0 time exceeded, 0 parameter problem 0 irdp solicitations, 0 irdp advertisements TCP statistics: Rcvd: 0 total, 0 checksum errors, 0 no port Sent: 0 total UDP statistics: Rcvd: 1025 total, 0 checksum errors, 1021 no port Sent: 0 total, 0 forwarded broadcasts ARP statistics: Rcvd: 1241 requests, 2 replies, 0 reverse, 0 other Sent: 2 requests, 8 replies (0 proxy), 0 reverse Drop due to input queue full: 0 |
These commands will allow the administrator to get a good picture of the performance of their network and the configuration of your network hardware.