3com S7906E 安装指导

 

1-16 

Port 2 [GigabitEthernet2/0/2]: 

Port status of LLDP             : Enable 

Admin status                    : Rx_Only 

Trap flag                       : No 

Polling interval                : 0s 

 

Number of neighbors              : 0 

Number of MED neighbors          : 0 

Number of CDP neighbors          : 0 

Number of sent optional TLV      : 0 

Number of received unknown TLV   : 0 

As the sample output shows, GigabitEthernet 2/0/2 of Switch A does not connect any neighboring 

devices.  

As shown in 

z 

GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 of Switch A are each connected to a Cisco IP 

phone.  

z 

Configure voice VLAN 2 on Switch A. Enable CDP compatibility of LLDP on Switch A to allow the 

Cisco IP phones to automatically configure the voice VLAN, thus confining their voice traffic within 

the voice VLAN to be isolated from other types of traffic.  

Figure 1-5 Network diagram for CDP-compatible LLDP configuration 

 

 

1)  Configure a voice VLAN on Switch A 

# Create VLAN 2.  

<SwitchA> system-view 

[SwitchA] vlan 2 

[SwitchA-vlan2] quit 

# Set the link type of GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 to trunk and enable voice VLAN 

on them. 

 

[SwitchA] interface gigabitethernet 2/0/1 

[SwitchA-GigabitEthernet2/0/1] port link-type trunk 

[SwitchA-GigabitEthernet2/0/1] voice vlan 2 enable 

[SwitchA-GigabitEthernet2/0/1] quit 

[SwitchA] interface gigabitethernet 2/0/2 

[SwitchA-GigabitEthernet2/0/2] port link-type trunk 

[SwitchA-GigabitEthernet2/0/2] voice vlan 2 enable 

[SwitchA-GigabitEthernet2/0/2] quit 

2)  Configure CDP-compatible LLDP on Switch A.