I am completing some labs in preparation for the CCNA exam. One of the questions I have encountered is asking me to determine the STP port state of a switchport based on the output of the "show interfaces" command. None of the books I have read really touch on this. What would one look for in the output that would indicate the port state? In this instance the port is passing data so I was able to guess that it was in forwarding state, but I would like to know if I am missing something.
Thanks!
Here's the output from a typical "show interfaces" command. There's nothing about the stp state that I can see.
wcq-15-core-6513#sh int gi2/3 GigabitEthernet2/3 is up, line protocol is up (connected) Hardware is C6k 1000Mb 802.3, address is 0013.60b7.ac82 (bia
0013.60b7.ac82) Description: 172.22.6.12 G2 MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 1000Mb/s input flow-control is off, output flow-control is on Clock mode is auto ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output 00:00:08, output hang never Last clearing of "show interface" counters 3d22h Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 30 second input rate 1000 bits/sec, 1 packets/sec 30 second output rate 8000 bits/sec, 14 packets/sec 511036 packets input, 48054891 bytes, 0 no buffer Received 311892 broadcasts (0 multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input 0 input packets with dribble condition detected 4650643 packets output, 357062050 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped outPerhaps they meant the "show spanning-tree interfaces" command ...
wcq-15-core-6513#sh spanning-tree int gi2/3
Vlan Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- -------------------------------- VLAN0026 Desg FWD 4 128.131 Edge P2p
BernieM
I was starting to assume that it was a typo in the lab. This is a Cisco Press product as well... I really wish that publishers would take the time to really edit technical book, like they do magazines or romance novels...
Thanks again!
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