RockyLinux8 LLDP使用方法 - Knowlege Database

概要
導入手順

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\|enp\|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