RockyLinux8 LLDP使用方法

目次

概要 †

Rocky Linux release 8.6 (Green Obsidian)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 lldpad
  
  依存関係が解決しました。
  ====================================================================================================================================
   パッケージ                 アーキテクチャー           バージョン                                  リポジトリー               サイズ
  ====================================================================================================================================
  インストール:
   lldpad                     x86_64                     1.0.1-16.git036e314.el8                     baseos                     300 k

• サービスの自動起動を設定する
  

  # systemctl enable lldpad 
  
  Created symlink /etc/systemd/system/multi-user.target.wants/lldpad.service → /usr/lib/systemd/system/lldpad.service.
  Created symlink /etc/systemd/system/sockets.target.wants/lldpad.socket → /usr/lib/systemd/system/lldpad.socket.

• サービスを起動する
  

  # systemctl start lldpad

• 起動結果

  # systemctl status lldpad.service
  ● lldpad.service - Link Layer Discovery Protocol Agent Daemon.
     Loaded: loaded (/usr/lib/systemd/system/lldpad.service; enabled; vendor preset: disabled)
     Active: active (running) since Sun 2022-08-21 17:28:40 JST; 6s ago
          ether 00:10:f3:7d:53:89  txqueuelen 1000  (Ethernet)
          RX packets 4849894  bytes 471135695 (449.3 MiB)
          RX errors 0  dropped 0  overruns 0  frame 0
          TX packets 2951881  bytes 1419172350 (1.3 GiB)
          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
          device memory 0xd0a00000-d0afffff  

設定 †

• インターフェイスが返す値を設定

  for i in `ls /sys/class/net/ | grep 'eth\|ens\|eno'`;
  do echo "enabling lldp for interface: $i";
  lldptool set-lldp -i $i adminStatus=rxtx;
  lldptool -T -i $i -V sysName enableTx=yes;
  lldptool -T -i $i -V portDesc enableTx=yes;
  lldptool -T -i $i -V sysDesc enableTx=yes;
  lldptool -T -i $i -V sysCap enableTx=yes;
  lldptool -T -i $i -V mngAddr enableTx=yes;
  done

• 設定の有効化

  # systemctl restart lldpad.service

• 設定結果の確認

  # lldptool get-tlv -i enp2s0
  Chassis ID TLV
          MAC: 00:10:f3:7d:53:89
  Port ID TLV
          MAC: 00:10:f3:7d:53:89
  Time to Live TLV
          120
  Port Description TLV
          Interface   3 as enp2s0
  System Name TLV
          zp-7400-01
  System Description TLV
          Linux zp-7400-01 4.18.0-372.19.1.el8_6.x86_64 #1 SMP Tue Aug 2 16:19:42 UTC 2022 x86_64
  System Capabilities TLV
          System capabilities:  Router
          Enabled capabilities: Router
  Management Address TLV
          IPv4: 192.168.1.155
          Ifindex: 3
  End of LLDPDU TLV

動作確認 †

• 隣接機器情報の参照

  # lldptool get-tlv -i enp2s0 -n
  
  Chassis ID TLV
          MAC: 64:e9:50:db:50:00
  Port ID TLV
          Ifname: Fa0/3
  Time to Live TLV
          120
  System Name TLV
          EDGE-SW03.asabiya.net
  System Description TLV
          Cisco IOS Software, C2960C Software (C2960c405-UNIVERSALK9-M), Version 15.0(2)SE4, RELEASE SOFTWARE (fc1)
  Technical Support: http://www.cisco.com/techsupport
  Copyright (c) 1986-2013 by Cisco Systems, Inc.
  Compiled Wed 26-Jun-13 04:13 by prod_rel_team
  Port Description TLV
          FastEthernet0/3
  System Capabilities TLV
          System capabilities:  Bridge
          Enabled capabilities: Bridge
  Management Address TLV
          IPv4: 192.168.1.8
          System port number: 1
  Port VLAN ID TLV
          PVID: 1
  MAC/PHY Configuration Status TLV
          Auto-negotiation supported and enabled
          PMD auto-negotiation capabilities: 0x6c00
          MAU type: 100 BaseTXFD
  End of LLDPDU TLV