Friday, October 5, 2018

Issue with trunking configuration

We have a routing switch in our DC which is connected to new Switch but I can see switchport as access vlan and trunk.
I believe it is trunk but when checked interface switchport details, I can see access mode vlan also defined.
I think if encapsulation and mode is defined then switchport becomes trunk but why are we seeing access mode vlan also.
Will vlan 200 be untagged and what will be behavior of port for trunk allowed vlans?

SW04-NEW : cisco Nexus5548

RS01 : cisco WS-C6504-E

RS01#show run int Te2/2/1

Building configuration...

Current configuration : 285 bytes

!

interface TenGigabitEthernet2/2/1

description SW04-NEW - E1/26

switchport

switchport access vlan 200

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 1-399,599,900-990

switchport mode trunk

switchport nonegotiate

channel-group 27 mode active

end

RS01#show int Te2/2/1 switchport

Name: Te2/2/1

Switchport: Enabled

Administrative Mode: trunk

Operational Mode: trunk (member of bundle Po27)

Administrative Trunking Encapsulation: dot1q

Operational Trunking Encapsulation: dot1q

Operational Dot1q Ethertype: 0x8100

Negotiation of Trunking: Off

Access Mode VLAN: 200

Trunking Native Mode VLAN: 1 (default)

Administrative Native VLAN tagging: enabled

Operational Native VLAN tagging: disabled

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Operational private-vlan: none

Trunking VLANs Enabled: 1-399,599,900-990

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled



No comments:

Post a Comment