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3850 trunk port not working

bstrubeTD3
Level 1
Level 1

I have two 3850's and one of them is not accepting traffic from the other one.

 

Switch 1 (G Pod) - all of the trunk ports on this one are working when connecting to other switches except for the one in H Pod (Switch 2). The other switches that connect to this switch are 3560's.

 

Interface status:

Gi1/0/40  Fees-IDF8-H-Pod    notconnect   1            auto   auto 10/100/1000BaseTX

Gi1/0/41  *** HOST PORT (END connected    1          a-full  a-100 10/100/1000BaseTX

Gi1/0/42  *** HOST PORT (END connected    1          a-full  a-100 10/100/1000BaseTX

Gi1/0/43  Fees-G3            connected    trunk      a-full a-1000 10/100/1000BaseTX

 

sh cdp n (clipped)

Fees_G3.tempe3   Gig 1/0/43        135              S I   WS-C3560C Gig 0/10

 

The interface on G Pod is:

 

interface GigabitEthernet1/0/40 

description Fees-IDF8-H-Pod

switchport mode trunk

udld port aggressive

macro description cisco-switch

spanning-tree portfast disable

spanning-tree link-type point-to-point

 

interface GigabitEthernet1/0/43

description Fees-G3

switchport mode trunk

udld port aggressive

macro description cisco-switch

spanning-tree portfast disable

spanning-tree link-type point-to-point

 

Switch 2 (H Pod)

 

Interface is:

interface GigabitEthernet1/0/48

description Fees-IDF2-G-pod

switchport mode trunk

udld port aggressive

macro description cisco-switch

spanning-tree portfast disable

spanning-tree link-type point-to-point

 

Interface status:

Port      Name               Status       Vlan       Duplex  Speed Type

Gi1/0/48  Fees-IDF2-G-pod    notconnect   1            auto   auto 10/100/1000BaseTX

 

Why is the port on H Pod not connecting as a trunk port?

1 Reply 1

Reza Sharifi
Hall of Fame
Hall of Fame

Can you change the duplex to full on both side of the connection and test again?

HTH

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