Etherchannel merupakan sebuah teknologi yang dapat menjadikan multiple physical links menjadi single logical links. Berikut beberapa kelebihan etherchannel:
Apabila kita lihat pada gambar di atas yaitu ada dua switch dan dua komputer yang terhubung ke masing-masing switch. Masing-masing interface komputer yang terhubung ke switch kapasitasnnya 1000 Mbit, sedangkan link antara switch hanya 100 Mbit. Lalu, apabila salah satu dari komputer tersebut mengirimkan paket lebih dari 100 Mbit dari link bandwidth yang tersedia. Maka bandwidth akan congestion dan trafik akan droped.
Sebenarnya ada dua solusi untuk mengatasi masalah tersebut
- Mengganti link antara switch menjadi 1000Mbit atau 10Gb
- Menambahkan multiple links dan menggabungkan link tersebut menjadi etherchannel
Kita langsung ke lab nya aja sob,
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| Topologi |
adeirawan-MLS1adeirawan-MLS1#sh running-config Building configuration... Current configuration : 1860 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname adeirawan-MLS1 ! ! ! ! ! ip dhcp pool IDN-VLAN10 network 10.10.10.0 255.255.255.0 default-router 10.10.10.254 ip dhcp pool IDN-VLAN20 network 20.20.20.0 255.255.255.0 default-router 20.20.20.254 ! ! ip routing ! ! ! ! ! ! ! ! ! ! ! ! ! ! spanning-tree mode pvst ! ! ! ! ! ! interface Port-channel 1 switchport trunk encapsulation dot1q switchport mode trunk ! interface FastEthernet0/1 channel-protocol pagp channel-group 1 mode auto switchport trunk encapsulation dot1q switchport mode trunk ! interface FastEthernet0/2 channel-protocol pagp channel-group 1 mode auto switchport trunk encapsulation dot1q switchport mode trunk ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface FastEthernet0/16 ! interface FastEthernet0/17 ! interface FastEthernet0/18 ! interface FastEthernet0/19 ! interface FastEthernet0/20 ! interface FastEthernet0/21 ! interface FastEthernet0/22 ! interface FastEthernet0/23 ! interface FastEthernet0/24 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface Vlan1 no ip address shutdown ! interface Vlan10 ip address 10.10.10.254 255.255.255.0 ! interface Vlan20 ip address 20.20.20.254 255.255.255.0 ! interface Vlan30 ip address 30.30.30.254 255.255.255.0 ! interface Vlan40 ip address 40.40.40.254 255.255.255.0 ! ip classless ! ip flow-export version 9
adeirawan-SW1adeirawan-SW1#sh running-config Building configuration... Current configuration : 1419 bytes ! version 12.1 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname adeirawan-SW1 ! ! ! spanning-tree mode pvst ! interface FastEthernet0/1 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 20 switchport mode access switchport port-security switchport port-security mac-address sticky switchport port-security mac-address sticky 000C.CF19.0D6C ! interface FastEthernet0/3 switchport access vlan 10 switchport mode access switchport port-security switchport port-security mac-address sticky switchport port-security violation restrict switchport port-security mac-address sticky 0000.0C87.91CD !
adeirawan-SW2adeirawan-SW2#show running-config Building configuration... Current configuration : 1374 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname adeirawan-SW2 ! ! ! ! ! spanning-tree mode pvst ! interface FastEthernet0/1 channel-protocol pagp channel-group 1 mode desirable switchport mode trunk ! interface FastEthernet0/2 channel-protocol pagp channel-group 1 mode desirable switchport mode trunk ! interface FastEthernet0/3 switchport trunk allowed vlan 10,20 switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 10,20 switchport mode trunk ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface FastEthernet0/16 ! interface FastEthernet0/17 ! interface FastEthernet0/18 ! interface FastEthernet0/19 ! interface FastEthernet0/20 ! interface FastEthernet0/21 ! interface FastEthernet0/22 ! interface FastEthernet0/23 ! interface FastEthernet0/24 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface Port-channel 1 switchport mode trunk !
Oke, kalau dilihat dari command konfigurasinya selain etherchannel ada juga bahwa IP yang di dapat oleh PC menggunakan DHCP dan setiap interface pada client menggunakan port security, sekalian kita review pembahasan kemarin sob.adeirawan-SW3adeirawan-SW3#show running-config Building configuration... Current configuration : 1418 bytes ! version 12.1 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname adeirawan-SW3 ! ! ! spanning-tree mode pvst ! interface FastEthernet0/1 switchport mode trunk ! interface FastEthernet0/2 switchport access vlan 10 switchport mode access switchport port-security switchport port-security mac-address sticky switchport port-security violation protect switchport port-security mac-address sticky 00D0.58DE.AAD2 ! interface FastEthernet0/3 switchport access vlan 20 switchport mode access switchport port-security switchport port-security mac-address sticky switchport port-security mac-address sticky 00E0.B055.C666 !
Sekarang kita cek multiplelinks nya sudah jadi satu belum, begini cara cek nya sob
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| Channel-Group mode PAgp |
- PAgP (Cisco proprietary)
- LACP (IEEE standard)
Mengecek mode port security
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| Mode Violation Port Security |
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| DHCP Request Successful |
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| Test Ping Antar Network |
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| Test Ping Sesama Network |
Semoga Bermanfaat !
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