RockyLinux9 LLDP使用方法 - Knowlege Database

概要
導入手順

概要†

Rocky Linux 9.5 (Blue Onyx)にてlldpdを使用する方法。

↑

導入手順†

↑

インストール†

パッケージ導入
```
# dnf install lldpd
```

サービスの自動起動を設定する

# systemctl enable --now lldpd

Created symlink /etc/systemd/system/multi-user.target.wants/lldpd.service → /usr/lib/systemd/system/lldpd.service.

サービスを起動する
```
# systemctl start lldpd
```

起動結果

# systemctl status lldpd
● lldpd.service - LLDP daemon
    Loaded: loaded (/usr/lib/systemd/system/lldpd.service; enabled; preset: disabled)
    Active: active (running) since Mon 2025-05-05 21:13:11 JST; 4s ago
      Docs: man:lldpd(8)
  Main PID: 14997 (lldpd)
     Tasks: 2 (limit: 404869)
    Memory: 1.6M
       CPU: 32ms
    CGroup: /system.slice/lldpd.service
            ├─14997 /usr/sbin/lldpd
            └─14999 /usr/sbin/lldpd

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設定†

全インターフェイスから情報を送信させる
```
vi /etc/sysconfig/lldpd
```

以下を追記
```
LLDPD_ARGS=""
```

設定の有効化
```
# systemctl restart lldpd.service
```

設定結果の確認

# lldpcli show interfaces

-------------------------------------------------------------------------------
LLDP interfaces:
-------------------------------------------------------------------------------
Interface:    enp12s0
 Administrative status: RX and TX
 Chassis:     
   ChassisID:    mac 10:7b:44:90:a8:e9
   SysName:      local-fs.localnet.asabiya.net
   SysDescr:     Rocky Linux 9.5 (Blue Onyx) Linux 5.14.0-503.40.1.el9_5.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Apr 30 17:38:54 UTC 2025 x86_64
   MgmtIP:       10.18.10.240
   MgmtIface:    11
   Capability:   Bridge, off
   Capability:   Router, off
   Capability:   Wlan, off
   Capability:   Station, on
 Port:        
   PortID:       mac 10:7b:44:90:a8:e9
   PortDescr:    enp12s0
 TTL:          120
-------------------------------------------------------------------------------

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動作確認†

隣接機器情報の参照

# lldpcli show neighbors

-------------------------------------------------------------------------------
LLDP neighbors:
-------------------------------------------------------------------------------
Interface:    enp7s0f0, via: LLDP, RID: 2, Time: 0 day, 00:14:54
 Chassis:     
   ChassisID:    mac 00:b8:b3:ac:b6:00
   SysName:      Catalyst2960L-48TS-LL.asabiya.net
   SysDescr:     Cisco IOS Software, C2960L Software (C2960L-UNIVERSALK9-M), Version 15.2(6)E, RELEASE SOFTWARE (fc4)
                 Technical Support: http://www.cisco.com/techsupport
                 Copyright (c) 1986-2017 by Cisco Systems, Inc.
                 Compiled Sat 05-Aug-17 12:46 by prod_rel_team
   MgmtIP:       10.18.1.5
   Capability:   Bridge, on
   Capability:   Router, off
 Port:        
   PortID:       ifname Gi0/8
   PortDescr:    LAG 3 member port
   TTL:          120