CISCO 9200 trunk port not communicating

[shahzadRai]

Dear Cisco Community

I am upgrading old cisco switch (2960 S) to 9200. I am facing truck port (tenG 1/1/2) communication issue, it is only showing VLAN1 however their are other vlans also assigned to it. Its status is shown as disconnected.

Other side of trunk port is also 9200.

Other 3 Trunk ports on 9200 (tenG 1/1/1. 1/1/3, 1/1/4) are functioning properly.

any clue why this particular trunk port is disconnected.?

[MHM Cisco World]

Show interface switchport 

Share this of trunk not work for both SW

[Richard Burts]

It might be helpful to see the configuration of the new switchport and of the old switchport.

[shahzadRai]

here is the configuration on both sides. (duplex auto , speed auto)

interface TenGigabitEthernet1/1/1
description SW1
switchport trunk allowed vlan 1,101,160,162,163
switchport mode trunk

interface TenGigabitEthernet1/1/2
description SW2
switchport trunk allowed vlan 1,101,160,162,163
switchport mode trunk

[MHM Cisco World]

This what you  config 

I need to see 

Show interface switchport x

This give view what really oper in port 

[Richard Burts]

It might also be helpful to see the output of show cdp neighbor from both switches. Are they actually seeing each other?

[Leo Laohoo]

On the new switch, post the output to the command "sh vlan".

[Richard Pidcock]

Trying setting the ports to "speed nonegotiate".  I've had troubles before with auto negotiation and setting them to fixed corrected my issues.

[Deepak Kumar]

Hi,

My assumption that it is a fiber port between both Switches. Did you verified call Layer 1 stuff as SFP is detected and supported on this model, Correct type of SFP and Patch Cords etc. Also Did you tried to verify the Fiber power at both interfaces? 

Also, If a trunk interface is down then it will always shows VLAN 1 only. Seems it is Cisco Default behavior. 

Better to share some command output as:

Show inter XXXXX switchport, Show inter xxxxxx trans details 

[shahzadRai]

Cisco 9200 uplink port 1/1/3 down. here is status of switch port on one side

PCS-SENK-101-2BA#sh interfaces TENGigabitEthernet 1/1/3 switchport
Name: Te1/1/3
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: 1 (default)
Administrative Native VLAN tagging: disabled
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: 1,102,160,162,163
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Vepa Enabled: false
App Interface: false
Appliance trust: none

and vlan status as below

Port Name Status Vlan Duplex Speed Type
Gi1/0/48 disabled 102 auto auto 10/100/1000BaseTX
Te1/1/1 Uplink PCS-SENK-10 connected trunk full 1000 1000BaseLX SFP
Te1/1/2 Uplink PCS-SENK-10 connected trunk full 1000 1000BaseLX SFP
Te1/1/3 Uplink PCS-SENK-20 notconnect 1 full 1000 1000BaseLX SFP
Te1/1/4 Uplink PCS-SENK-20 connected trunk full 1000 1000BaseLX SFP
Po1 PCS-SENK-L3-2B connected trunk a-full a-1000 N/A
Po2 PCS-SENK-L3-2A connected trunk a-full a-1000 N/A

here is status of switch port on other side

PCS-SENK-201-2BB#sh interfaces tenGigabitEthernet 1/1/1 switchport
Name: Te1/1/1
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: 1 (default)
Administrative Native VLAN tagging: disabled
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: 1,102,160,162,163
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Port Name Status Vlan Duplex Speed Type
Gi1/0/24 disabled 102 auto auto 10/100/1000BaseTX
Te1/1/1 UPLINK-PCS-SENK-10 notconnect 1 full 1000 1000BaseLX SFP
Te1/1/2 disabled 1 auto auto unknown
Te1/1/3 disabled 1 auto auto unknown
Te1/1/4 disabled 1 auto auto unknown

any advise why this uplink is down?

[Richard Pidcock]

I see 1000BaseLX in the output; what type of fiber patch cord do you have connected, MMF or SMF? If this is an LX module I think you may need to use a SMF patch cord.

[MHM Cisco World]

So in end show command give use the correct reason why trunk down.

You connect via sfp can you mention the excat number of sfp and the cable you use how much long.

MHM

[shahzadRai]

I am using SMF. I replaced the 2960 with 9200. with 2960 all uplinks incluging 1/1/3 is working fine.

[Richard Pidcock]

Can you please share the output of a "show inventory" command. (From both sides of the connection)

[Leo Laohoo]

Loop the fibre connection and see if the link goes up or not.