1 安装lldpad
yum install -y lldpad
2 启用lldpad
[root@xxxx]# service lldpad start
或者
[root@xxxx]# systemctl start lldpad
3. 开启对应网口的LLDP
[root@xxxx]# lldptool set-lldp -i enp125s0f0 adminStatus=rxtx
adminStatus = rxtx #这样就和网络交换机建立了邻居关系，接下来就可以查询连接的交换机信息了
4. 使用lldptool查看网口与交换机连接状态：
[root@kp-pc1 ~]# lldptool -t -n -i enp125s0f0
Chassis ID TLV
MAC: e8:bd:d1:03:4c:d0
Port ID TLV
Ifname: GigabitEthernet0/0/41
Time to Live TLV
120
Port Description TLV
GigabitEthernet0/0/41
System Name TLV
WX-2F.C4.35U-S5700_8
System Description TLV
S5700-52C-SI
Huawei Versatile Routing Platform Software
VRP (R) software, Version 5.130 (S5700 V200R003C00SPC300)
Copyright (C) 2000-2013 HUAWEI TECH CO., LTD
System Capabilities TLV
System capabilities: Bridge
Enabled capabilities: Bridge
Management Address TLV
IPv4: 10.192.6.8
Ifindex: 83
OID: +[)
Port VLAN ID TLV
PVID: 54
Port and Protocol VLAN ID TLV
PVID: 0, not supported, not enabled
VLAN Name TLV
VID 1: Name VLAN 0001
MAC/PHY Configuration Status TLV
Auto-negotiation supported and enabled
PMD auto-negotiation capabilities: 0x7c05
MAU type: 1000 BaseTFD
Power via MDI TLV
Port class PD
PSE MDI power not supported
PSE pairs not controllable
PSE Power pair: unkwown [0]
Power class 1
Link Aggregation TLV
Aggregation capable
Currently not aggregated
Aggregated Port ID: 0
Maximum Frame Size TLV
1600
LLDP-MED Capabilities TLV
Device Type: netcon
Capabilities: LLDP-MED, Network Policy, Location Identification, Inventory
LLDP-MED Network Policy TLV
0140016e
LLDP-MED Extended Power-via-MDI TLV
800002
LLDP-MED Hardware Revision TLV
VER C
LLDP-MED Firmware Revision TLV
LLDP-MED Software Revision TLV
Version 5.130 V200R003C00SPC300
LLDP-MED Serial Number TLV
LLDP-MED Manufacturer Name TLV
HUAWEI TECH CO., LTD
LLDP-MED Model Name TLV
LLDP-MED Asset ID TLV
End of LLDPDU TLV
