交换机命令show interfaces type0/port_# switchport|trunk用于显示中继连接的配置情况，下面是显示例子：

2950#show interface fastEthernet0/1 switchport

Name: fa0/1

Switchport: Enabled

Administrative mode: trunk

Operational Mode: trunk

Administrative Trunking Encapsulation: dot1q

Operational Trunking Encapsulation: dot1q

egotiation of Trunking: disabled

Access Mode VLAN: 0((inactive))

Trunking Native Mode VLAN: 1(default)

Trunking VLANs Enabled: all

Trunking VLANs active: 1,2

Pruning VLANs Enabled: 2-1001

Priority for untagged frames: 0

Override vlan tag priority: FALSE

Voice VLAN: none

在这个例子中，端口fa0/1的链路模式被设置为  (1)  状态，默认的vlan是  (2)  。

(1)A、Desirable

B、No-Negoriate

C、Autonegotiate

D、trunk

(2)A、VLAN0

B、VLAN1

C、VLAN2

D、VLAN3