04-19-2022 02:45 PM
Have a catalyst 9200 switch that is showing access/nonegotiate/access instead of trunk/on/trunk. How 's TOS and TNS configured to show trunk/on/trunk? int te1/1/1 is an uplink interface. Config is below:
DTP information for TenGigabitEthernet1/1/1:
TOS/TAS/TNS: ACCESS/NONEGOTIATE/ACCESS
TOT/TAT/TNT: 802.1Q/802.1Q/802.1Q
Neighbor address 1: 000000000000
Neighbor address 2: 000000000000
Hello timer expiration (sec/state): never/STOPPED
Access timer expiration (sec/state): never/STOPPED
Negotiation timer expiration (sec/state): never/STOPPED
Multidrop timer expiration (sec/state): never/STOPPED
FSM state: S1:OFF
# times multi & trunk 0
Enabled: no
In STP: no
Statistics
Thanks,
04-19-2022 03:42 PM - edited 04-19-2022 04:23 PM
Looks like the interface is down, what is the config applied on the interface :
Link status:
TOS – Trunk Operational Status
TAS – Trunk Administrative Status
TNS – Trunk Negotiation Status
TOT – Trunk Operational Encapsulation Type
TAT – Trunk Administrative Encapsulation Type
TNT – Trunk Negotiation Encapsulation Type
Port in permanent “Trunk” state, sending DTP packets over the link.
DTP information for GigabitEthernet0/0/0
TOS/TAS/TNS: TRUNK/ON/TRUNK
TOT/TAT/TNT: 802.1Q/802.1Q/802.1Q
04-19-2022 04:06 PM
Can we see the config of trunk port ?
04-20-2022 05:26 AM
interface te1/1/1
switchport mode trunk
switchport nonegotiate
This is the config on both switches. Only trying to link the connection between them at this point.
04-20-2022 06:15 AM
interface te1/1/1
switchport mode trunk native VLAN
switchport nonegotiate
try specify native vlan for both side.
do show DTP and see if it will be trunk/non/trunk
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