Unable to bring up the trunk

Hi Guys,
I am pretty amused on this. I am just trying to bring up the trunk between two
switches i am unable to find a good reason for that not to come up...
I am using two 2924C-XL-EN switches and connected them through their f0/1
interface. I am trying to bring up the trunk between them..but dont know why
it is not coming up..theport works fine as access port.. Please help..
Switch A:
SW2#sh run int f0/1Building configuration...
Current configuration:!interface FastEthernet0/1 duplex full speed
100 switchport trunk allowed vlan 1,10,1002-1005 switchport mode trunkend
SW2#sh int f0/1 switchportName: Fa0/1Switchport: EnabledAdministrative mode:
trunkOperational Mode: trunkAdministrative Trunking Encapsulation:
islOperational Trunking Encapsulation: islNegotiation of Trunking:
DisabledAccess Mode VLAN: 0 ((Inactive))Trunking Native Mode VLAN: 1
(default)Trunking VLANs Enabled: 1,10,1002-1005Trunking VLANs Active:
1,10Pruning VLANs Enabled: 2-1001
Priority for untagged frames: 0Override vlan tag priority: FALSEVoice VLAN:
noneAppliance trust: noneSelf Loopback: NoSW2#sh int f0/1FastEthernet0/1 is
down, line protocol is down Hardware is Fast Ethernet, address is
0004.c1c0.65c1 (bia 0004.c1c0.65c1) MTU 1500 bytes, BW 100000 Kbit, DLY 100
usec, reliability 255/255, txload 1/255, rxload 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 01:21:46, 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 Received 0 broadcasts, 0
runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0
ignored 0 watchdog, 0
 multicast 0 input packets with dribble condition detected 3 packets
output, 858 bytes, 0 underruns 0 output errors, 0 collisions, 5 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 B:
Current configuration:!interface FastEthernet0/1 duplex full speed
100 switchport trunk allowed vlan 1,10,1002-1005 switchport mode trunkend
SW1#sh int f0/1 switchName: Fa0/1Switchport: EnabledAdministrative mode:
trunkOperational Mode: trunkAdministrative Trunking Encapsulation:
islOperational Trunking Encapsulation: islNegotiation of Trunking:
DisabledAccess Mode VLAN: 0 ((Inactive))Trunking Native Mode VLAN: 1
(default)Trunking VLANs Enabled: 1,10,1002-1005Trunking VLANs Active: 1Pruning
VLANs Enabled: 2-1001
Priority for untagged frames: 0Override vlan tag priority: FALSEVoice VLAN:
noneAppliance trust: noneSelf Loopback: NoSW1#sh int f0/1FastEthernet0/1 is
down, line protocol is down Hardware is Fast Ethernet, address is
00b0.64a4.d9c1 (bia 00b0.64a4.d9c1) MTU 1500 bytes, BW 100000 Kbit, DLY 100
usec, reliability 255/255, txload 1/255, rxload 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 00:50:22, 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 5 packets input, 971 bytes Received 4 broadcasts, 0
runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0
ignored 0 watchdog, 0
 multicast 0 input packets with dribble condition detected 133 packets
output, 12998 bytes, 0 underruns 0 output errors, 0 collisions, 5
interface resets 0 babbles, 0 late collision, 0 deferred 0 lost
carrier, 0 no carrier--------------
I have tried IOS upgrade, speed/duplex setting change, cable change etc but
dont knw why the trunk is not coming up....the port works fine when it is used
as access port.
Any idea how 2924 switches trunk behaves??

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Received on Fri Aug 27 2010 - 09:35:11 ART