07-20-2011 12:03 PM - edited 03-07-2019 01:18 AM
Guys,
Not sure what I'm missing, however, I'm unable to bring a fiber interface up on two switches to trun. Below is the information from running conifig and show int. One swtich is at int gi0/1 and the other at int gi0/3. The link will be configured as a trunk eventually, but for now I just need it up.
Thanks for any and all assistance.
--------------------------
First Switch - Show run int gi0/1
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
logging event trunk-status
end
!
-- Second switch - Show run int gi0/3
!
interface GigabitEthernet0/3
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
end
--------------------------
First Switch - Show int gi0/1
GigabitEthernet0/1 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 000f.f791.7cb1 (bia 000f.f791.7cb1)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseLX
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:31:32, output 00:31:36, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
14989 packets input, 17579854 bytes, 0 no buffer
Received 290 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 95 multicast, 0 pause input
0 input packets with dribble condition detected
109 packets output, 10360 bytes, 0 underruns
0 output errors, 0 collisions, 19 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 out
Switch 2 - Show int gi0/3
GigabitEthernet0/3 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 0019.e877.f21b (bia 0019.e877.f21b)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is unknown
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 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
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 7 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 out
-------------------------------
Switch1 - show int gi0/1 switchport
Name: Gi0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 10 (VLAN0010)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Switch2 - Show int gi0/3 switchport
Name: Gi0/3
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 10 (DATA-WORKSTATION)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
------ Added info ---- Show version ---
Switch1
!
Cisco IOS Software, C3550 Software (C3550-IPBASEK9-M), Version 12.2(25)SEE2, REL
EASE SOFTWARE (fc1)
!
Switch2
Cisco IOS Software, C3560 Software (C3560-IPBASEK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
!
07-20-2011 12:04 PM
What have you used to connect the switches ie. straight thru, crossover, fibre ?
Jon
07-20-2011 12:09 PM
It's a GBIC connector. When they are plugged into Dell Switches they light up without any issues
07-20-2011 12:17 PM
Hi,
take a look on gbic on interface gi0/3.
The media type is "unknown".
07-20-2011 12:19 PM
Yeah I noticed that. Not sure why it is taking into consideration it lights up when plugged into the Dell Switches. This is why I'm confused
07-20-2011 12:25 PM
both gbic´s are Cisco or are from other vendors?
07-20-2011 12:19 PM
How old are the Dell switches? Try "speed nonegotiate" on your interface.
07-20-2011 12:44 PM
Dell Switches are about 2 - 3 years old
I had already tried the speed nonegotiate - retry again but it does not work still.
!
interface GigabitEthernet0/3
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
speed nonegotiate
end
001104: Jul 20 12:39:52.098: %LINK-3-UPDOWN: Interface GigabitEthernet0/3, changed state to down
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
logging event trunk-status
speed nonegotiate
end
!
000026: *Feb 28 18:51:11.249: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, chan
ged state to down
07-20-2011 12:50 PM
Being fiber I assume you swapped transmit and recieve around to check . Also verify it is a cisco gbic in the side that says unknown.
07-20-2011 12:52 PM
fiber
07-20-2011 12:59 PM
Guys,
Thanks for the assistance. We changed it to a genuine cisco and it's all good now.
Thanks for all the help. It's very much appreciated the prompt response which I received to my question.
07-20-2011 02:42 PM
If you didn't have cisco SFP's and you didn't have the hidden command to allow non-cisco sfp's to work, these ports should've been err-disabled?
07-21-2011 05:50 AM
Actually the port did go into err-disable state at times. Would you mind saying what is the hidden command to allow non-cisco sfp's to work.
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