12-30-2023, 06:51 PM
The exhibit shows both interfaces configured as dynamic auto but status is trunking.
If both ports are dynamic auto the trunk would not come up and the command output of show interface trunk would not display any trunks.
IOU1#sh cdp ne
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
IOU2 Eth 0/0 134 R S I Linux Uni Eth 0/0
Total cdp entries displayed : 1
IOU1#sh run int e 0/0
Building configuration...
Current configuration : 29 bytes
!
interface Ethernet0/0
end
IOU1#show interface ethernet0/0 switchport | inc Administrative Mode:
Administrative Mode: dynamic auto
IOU1#sh int trunk
IOU1#
#############################################
IOU2#sho cdp ne
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
IOU1 Eth 0/0 157 R S I Linux Uni Eth 0/0
Total cdp entries displayed : 1
IOU2#sh run int e0/0
Building configuration...
Current configuration : 29 bytes
!
interface Ethernet0/0
end
IOU2#show interface ethernet0/0 switchport | inc Administrative Mode:
Administrative Mode: dynamic auto
IOU2#sh int trunk
IOU2#
IOU2#
If both ports are dynamic auto the trunk would not come up and the command output of show interface trunk would not display any trunks.
IOU1#sh cdp ne
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
IOU2 Eth 0/0 134 R S I Linux Uni Eth 0/0
Total cdp entries displayed : 1
IOU1#sh run int e 0/0
Building configuration...
Current configuration : 29 bytes
!
interface Ethernet0/0
end
IOU1#show interface ethernet0/0 switchport | inc Administrative Mode:
Administrative Mode: dynamic auto
IOU1#sh int trunk
IOU1#
#############################################
IOU2#sho cdp ne
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
IOU1 Eth 0/0 157 R S I Linux Uni Eth 0/0
Total cdp entries displayed : 1
IOU2#sh run int e0/0
Building configuration...
Current configuration : 29 bytes
!
interface Ethernet0/0
end
IOU2#show interface ethernet0/0 switchport | inc Administrative Mode:
Administrative Mode: dynamic auto
IOU2#sh int trunk
IOU2#
IOU2#