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ccna取得に向けてCiscoPacketTracerで構築練習 ~Ether Channel~

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はじめに

CCNAを受験するにあたって、実際にコマンドを打って構築をすることが大切らしい。
Cisco Packet Tracerを使用して構築の練習とその流れ、結果を示して、気づいたことなどをまとめていこうと思う。

目標

  • L2 EtherChanneを設定する
  • L3 EtherChanneを設定する
  • それぞれ適切に動作するか確認する。

実践

1. L2 EtherChannel

channel1-1.png
デフォルトの状態だとSTPによって1つのリンクしか使えていない。

Switch0
Switch0(config)#interface range fa 0/22-24
Switch0(config-if-range)#switchport mode access
Switch0(config-if-range)#channel-group 1 mode on
Switch0(config-if-range)#
Creating a port-channel interface Port-channel 1

%LINK-5-CHANGED: Interface Port-channel1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
Switch0(config-if-range)#exit
Switch1
Switch1(config)#interface range fa 0/22-24
Switch1(config-if-range)#switchport mode access
Switch1(config-if-range)#channel-group 1 mode on
Switch1(config-if-range)#
Creating a port-channel interface Port-channel 1

%LINK-5-CHANGED: Interface Port-channel1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up

Switch1(config-if-range)#exit

今回はネゴシエーションはせず手動で設定した。

Cisco Packet Tracer 2024-05-25 22-44-27.gif

バンドルされたリンクが使用されており、Pingも通っている。

2. L3 EtherChannel

L3switchのルーテッドポートでもEtherChannelを設定する。
channel2-1.png

L3Switch0
//VLAN設定
L3Switch0(config)#interface vlan 10
L3Switch0(config-if)#ip address 192.168.1.254 255.255.255.0
L3Switch0(config-if)#no sh
L3Switch0(config-if)#exit
L3Switch0(config)#interface fa 0/1
L3Switch0(config-if)#switchport access vlan 10
L3Switch0(config-if)#switchport mode access 
L3Switch0(config-if)#exit
L3Switch0(config)#ip routing

//EtherChanne設定
L3Switch0(config)#interface range fa 0/23-24
L3Switch0(config-if-range)#no switchport 
L3Switch0(config-if-range)#channel-group 1 mode active
L3Switch0(config-if-range)#exit
L3Switch0(config)#interface Port-channel 1
L3Switch0(config-if)#ip address 192.168.10.1 255.255.255.0
L3Switch0(config-if)#exit

//スタティックルート
L3Switch0(config)#ip route 192.168.2.0 255.255.254.0 192.168.10.2
L3Switch0(config)#end

//LACP確認
L3Switch0#show etherchannel summary 
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port


Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+----------------------------------------------

1      Po1(RU)           LACP   Fa0/23(P) Fa0/24(P) 
L3Switch1
//VLAN設定
L3Switch1(config)#interface vlan 20
L3Switch1(config-if)#ip address 192.168.2.254 255.255.255.0
L3Switch1(config-if)#no sh
L3Switch1(config-if)#exit
L3Switch1(config)#interface vlan 30
L3Switch1(config-if)#ip address 192.168.3.254 255.255.255.0
L3Switch1(config-if)#no sh
L3Switch1(config-if)#exit
L3Switch1(config)#interface fa 0/1
L3Switch1(config-if)#switchport mode access
L3Switch1(config-if)#switchport access vlan 20
L3Switch1(config-if)#exit
L3Switch1(config)#interface fa 0/2
L3Switch1(config-if)#switchport mode access
L3Switch1(config-if)#switchport access vlan 30
L3Switch1(config-if)#exit
L3Switch1(config)#ip routing

//EtherChannel設定
L3Switch1(config)#interface range
L3Switch1(config)#interface range fa 0/23-24
L3Switch1(config-if-range)#no switchport 
L3Switch1(config-if-range)#channel-group 1 mode active
L3Switch1(config-if-range)#exit
L3Switch1(config)#interface Port-channel 1
L3Switch1(config-if)#ip address 192.168.10.2 255.255.255.0
L3Switch1(config-if)#exit

//スタティックルート
L3Switch1(config)#ip route 192.168.1.0 255.255.255.0 192.168.10.1
L3Switch1(config)#end

//LACP確認
L3Switch1#show etherchannel summary 
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port


Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+----------------------------------------------

1      Po1(RU)           LACP   Fa0/23(P) Fa0/24(P) 

Cisco Packet Tracer 2024-05-26 00-00-43.gif
Pingによる疎通確認ができた。

参考文献

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