SFP FIBER CONNECTION

we have  a private fiber connection between 2 buildings
using dellN3048 SWITCHES:
the 2 switches are connected via private fiber > the fiber ports are configure in trunkmode access > and the link is ok it seems

 but the only way we can ping devices across the fiber > from building 1 dell switch which servers are plugged into > to building 2 switch with servers > Is to change the below ports (these ports are where our servers pugged into) on the Dell switch  to “trunkmode” < which isn't correct
The ports are configured for vlan 12 > the servers on both ends are both on vlan 172.133.12.x

anyone know how to configure these ports correctly?

Below the  sample config from building1 switch:

interface Gi1/0/3
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
exit
!
interface Gi1/0/4
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
exit
!
interface Gi1/0/5
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
exit
!
interface Gi1/0/6
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
exit
!
interface Gi1/0/7
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
exit
!
interface Gi1/0/8
description "Servers_VES\SAN\GC"
spanning-tree portfast
switchport access vlan 12
porto111Asked:
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Craig BeckCommented:
I think you need to put the ports in access mode, otherwise they'll negotiate as trunks.
0
porto111Author Commented:
when I put them in switchport mode access vlan 12
I loose connectivity

only left the sfp fiber one in trunk mode
0
Craig BeckCommented:
Can you provide configs for both ends?
0
Garry GlendownConsulting and Network/Security SpecialistCommented:
Where's the config for the interconnect ports?
 
Also, do you have the VLAN actually configured on both? (e.g. Cisco switches need to have the VLAN defined, otherwise they won't forward traffic for it)
0

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