Just in case, do a 'show port channel' to verify that it did not create a
fast etherchannel. If it didn't create a channel, you should see a
message like:
'No ports channelling'
Ahmed Aden - 703.798.7158
Network Engineer
Resource Networks
On Tue, 13 Feb 2001, Pierre-Alex 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
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 1 packets/sec
> 12529 packets input, 1218710 bytes, 0 no buffer
> Received 2053 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 0 watchdog, 1760 multicast
> 0 input packets with dribble condition detected
> 107043 packets output, 5164163 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 0/20
> FastEthernet0/20 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0050.3ef0.3596 (bia 0050.3ef0.3596)
> 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 00:00:01, output 00:00:00, 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 1000 bits/sec, 3 packets/sec
> 21455 packets input, 3875096 bytes, 0 no buffer
> Received 20606 broadcasts, 0 runts, 0 giants, 0 throttles
> 5595 input errors, 5595 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 0 watchdog, 20442 multicast
> 0 input packets with dribble condition detected
> 349980 packets output, 16242994 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 0/21
> FastEthernet0/21 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0050.3ef0.3597 (bia 0050.3ef0.3597)
> 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 03:49:16, 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 1000 bits/sec, 2 packets/sec
> 5 minute output rate 0 bits/sec, 1 packets/sec
> 167770 packets input, 19224632 bytes, 0 no buffer
> Received 167769 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 0 watchdog, 167594 multicast
> 0 input packets with dribble condition detected
> 100826 packets output, 3854354 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 0/24
> FastEthernet0/24 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0050.3ef0.359a (bia 0050.3ef0.359a)
> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
> Encapsulation ARPA, loopback not set, keepalive not set
> Half-duplex, 100Mb/s, 100BaseTX/FX
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input never, output 00:00:00, 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 27000 bits/sec, 11 packets/sec
> 5 minute output rate 76000 bits/sec, 13 packets/sec
> 686489 packets input, 149034582 bytes, 0 no buffer
> Received 2589 broadcasts, 0 runts, 0 giants, 0 throttles
> 912 input errors, 22 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 0 watchdog, 0 multicast
> 0 input packets with dribble condition detected
> 750225 packets output, 281599835 bytes, 0 underruns
> 0 output errors, 3284 collisions, 1 interface resets
> 0 babbles, 0 late collision, 3842 deferred
> 0 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out
> C2924XL#
> Pierre-Alex
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Yonkerbonk
> Sent: Tuesday, February 13, 2001 6:26 PM
> To: Pierre-Alex; [EMAIL PROTECTED]
> Cc: Dale Cunningham
> Subject: Re: DISTURBING: Spanning Tree Protocol Does not Work.
>
> Could you send a config for both switches? How about a
> fuller show spantree? A show port on the two ports?
> Maybe this is caused by some half-duplex, full-duplex
> issue... though I can't rationalize that explanation.
> The fact that one port shows the switch as being the
> root bridge and the other port pointing outwards is
> getting me.
> Also, who is MAC 0050.50E2.42C0?
>
> Michael
>
> --- Pierre-Alex <[EMAIL PROTECTED]> wrote:
> > Or I am really dumb....
> >
> > I have two switches a Cisco 2924XL-EN and a Cisco
> > 1912-EN. I have setup port
> > A and port B of the 1912 swictch to do ISL trunking
> > with the 2924XL
> >
> > This situation should have created a loop and the
> > Spanning Tree protocol
> > should have disabled port B.( I have setup the
> > 2924XL to be the root).
> > Instead I am getting the
> >
> > following output, with both port A and B in the
> > fowarding mode (see below)
> > So either the Spanning Tree protocol did not do its
> > job (with due respect to
> > its creator),
> >
> > or the trunking ports are not part of the spanning
> > tree calculation, or I am
> > really dumb and I missed something in the story ....
> >
> > Any comment?
> >
> >
> >
> > DISL state: On, Trunking: On, Encapsulation type:
> > ISL
> > C1912#sh trunk b
> > DISL state: On, Trunking: On, Encapsulation type:
> > ISL
> >
> > Port FastEthernet 0/26 of VLAN1 is Forwarding
> > Port path cost 10, Port priority 128
> > Designated root has priority 32768, address
> > 0050.3EF0.3580
> > Designated bridge has priority 32768, address
> > 0050.3EF0.3580
> > Designated port is 22, path cost 0
> > Timers: message age 20, forward delay 15, hold 1
> > --More--
> > Port FastEthernet 0/27 of VLAN1 is Forwarding
> > Port path cost 10, Port priority 128
> > Designated root has priority 32768, address
> > 0050.3EF0.3580
> > Designated bridge has priority 32768, address
> > 0050.50E2.42C0
> > Designated port is 27, path cost 10
> > Timers: message age 20, forward delay 15, hold 1
> >
> >
> > Pierre-Alex
> >
> >
> > _________________________________
> > FAQ, list archives, and subscription info:
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> [EMAIL PROTECTED]
>
>
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