Switch connects to each other , but when check the lldp neighbor, it shows nothing .
===============display lldp neighbor===============
GigabitEthernet0/0/1 has 0 neighbor(s)
GigabitEthernet0/0/2 has 0 neighbor(s)
GigabitEthernet0/0/3 has 0 neighbor(s)
GigabitEthernet0/0/4 has 0 neighbor(s)
GigabitEthernet0/0/5 has 0 neighbor(s)
LLDP belongs to BPDU packets, while in the interface, customer disable bpdu, after enable it, the problem sovled .
port link-type trunk
port trunk pvid vlan 10
port trunk allow-pass vlan 2 to 4094
stp edged-port enable
undo ntdp enable
undo ndp enable