The 2924XL doesn't have trunking configured on Fa0/21,
while it is configured on Fa0/27 of the C1912 it is
connected to. I would have thought this would cause
baby giant errors on 2924XL's Fa0/21, but it doesn't
look like there are any.
But anyways, try to set it up and see if that works.
The C1912 'show spantree' output still doesn't look
right. I don't know why the C1912 shows the root port
as having a cost of 0 instead of 10.

Michael

--- Pierre-Alex <[EMAIL PROTECTED]> wrote:
> Hi Yonkerbonk,
> 
> As you requested, I did a show interface on the
> ports that are used on both
> switches.
> 
> Regards,
> 
> ----- on THE 1912------
> 
> sh int f 0/26
> 
> 
> FastEthernet 0/26 is Enabled
> Hardware is Built-in 100Base-TX
> Address is 0050.50E2.42DA
> MTU 1500 bytes, BW 100000 Kbits
> Port monitoring: Disabled
> Unknown unicast flooding: Enabled
> Unregistered multicast flooding: Enabled
> Description:
> Duplex/Flow Control setting: Auto-negotiate
> Auto-negotiation status:  Full duplex
> Enhanced Congestion Control: Disabled
> 
> 
> 
> 
> --More--
> 
>     Receive Statistics                     Transmit
> Statistics
> ------------------------------------- 
> -------------------------------------
> Total good frames               45739  Total frames 
>                    8243
> Total octets                  4758190  Total octets 
>                  935475
> Broadcast/multicast frames      45687 
> Broadcast/multicast frames       8206
> Broadcast/multicast octets    4752684 
> Broadcast/multicast octets     930237
> Good frames forwarded           27228  Deferrals    
>                       0
> Frames filtered                 18511  Single
> collisions                   0
> Runt frames                         0  Multiple
> collisions                 0
> No buffer discards                  0  Excessive
> collisions                0
>                                        Queue full
> discards                 0
> Errors:                                Errors:
>   FCS errors                        0    Late
> collisions                   0
>   Alignment errors                  0    Excessive
> deferrals               0
>   Giant frames                      0    Jabber
> errors                     0
>   Address violations                0    Other
> transmit errors             0
> C1912#sh int f 0/27
> 
> 
> FastEthernet 0/27 is Enabled
> Hardware is Built-in 100Base-TX
> Address is 0050.50E2.42DB
> MTU 1500 bytes, BW 100000 Kbits
> Port monitoring: Disabled
> Unknown unicast flooding: Enabled
> Unregistered multicast flooding: Enabled
> Description:
> Duplex/Flow Control setting: Auto-negotiate
> Auto-negotiation status:  Full duplex
> Enhanced Congestion Control: Disabled
> 
> 
> 
> 
> --More--
> 
>     Receive Statistics                     Transmit
> Statistics
> ------------------------------------- 
> -------------------------------------
> Total good frames                4788  Total frames 
>                   28073
> Total octets                   366300  Total octets 
>                 2553093
> Broadcast/multicast frames       4788 
> Broadcast/multicast frames      28064
> Broadcast/multicast octets     366300 
> Broadcast/multicast octets    2552388
> Good frames forwarded            4788  Deferrals    
>                       0
> Frames filtered                     0  Single
> collisions                   0
> Runt frames                         0  Multiple
> collisions                 0
> No buffer discards                  0  Excessive
> collisions                0
>                                        Queue full
> discards                 0
> Errors:                                Errors:
>   FCS errors                        0    Late
> collisions                   0
>   Alignment errors                  0    Excessive
> deferrals               0
>   Giant frames                      0    Jabber
> errors                     0
>   Address violations                0    Other
> transmit errors             0
> C1912#
> 
> ---- ON THE 2924XL
> 
> sh int f 0/1
> FastEthernet0/1 is up, line protocol is up
>   Hardware is Fast Ethernet, address is
> 0050.3ef0.3581 (bia 0050.3ef0.3581)
>   MTU 1500 bytes, BW 10000 Kbit, DLY 1000 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 00:00:31, output 00:00:01, 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, 1 packets/sec
>      30444 packets input, 5042703 bytes, 0 no buffer
>      Received 20759 broadcasts, 0 runts, 0 giants, 0
> throttles
>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0
> ignored, 0 abort
>      0 watchdog, 8294 multicast
>      0 input packets with dribble condition detected
>      100788 packets output, 3850388 bytes, 0
> underruns
>      0 output errors, 0 collisions, 1 interface
> resets
>      0 babbles, 0 late collision, 1 deferred
>      0 lost carrier, 0 no carrier
>      0 output buffer failures, 0 output buffers
> swapped out
> C2924XL#sh int f 0/9
> FastEthernet0/9 is up, line protocol is up
>   Hardware is Fast Ethernet, address is
> 0050.3ef0.358a (bia 0050.3ef0.358a)
>   MTU 1500 bytes, BW 100000 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 00:00:01, 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 88000 bits/sec, 18 packets/sec
>   5 minute output rate 33000 bits/sec, 17
> packets/sec
>      699710 packets input, 277674807 bytes, 0 no
> buffer
>      Received 5474 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
>      737413 packets output, 152885854 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
> C2924XL#sh int f 0/16
> FastEthernet0/16 is up, line protocol is up
>   Hardware is Fast Ethernet, address is
> 0050.3ef0.3591 (bia 0050.3ef0.3591)
>   MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely
> 255/255, load 1/255
>   Encapsulation ARPA, loopback not set, keepalive
> not set
>   Half-duplex, 10Mb/s, 100BaseTX/FX
>   ARP type: ARPA, ARP Timeout 04:00:00
>   Last input 00:00:36, output 00:00:01, 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
> 
=== message truncated ===


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