Lab CCNA - VTP ( VLAN Trunking Protocol)
CASE VTP SERVER OVERLAPPING
Topology:
Configuration :
VTP-Server |
VTP-SVR(config)#interface [interface name] VTP-SVR(config-if)#switchport mode trunk VTP-SVR(config)#vtp mode [mode] VTP-SVR(config)#vtp domain [domain name] VTP-SVR(config)#vlan [VLAN ID] VTP-SVR(config-vlan)#name [Name] |
VTP-Client |
VTP-Client(config)#interface [interface name] VTP-Client(config-if)#switchport mode trunk VTP-Client(config)#vtp mode [mode] |
VTP-Transparent |
VTP-Transparent(config-if)#interface [interface name] VTP-Transparent(config-if)#switchport mode trunk VTP-Transparent(config)#vtp mode [mode] |
Full Configuration :
VTP-SVR-1 |
VTP-SVR-1(config)#interface fa0/1 VTP-SVR-1(config-if)#switchport mode trunk VTP-SVR-1(config-if)#exit VTP-SVR-1(config)#vtp mode server VTP-SVR-1(config)#vtp domain CISCO VTP-SVR-1(config)#vlan 10 VTP-SVR-1(config-vlan)#name VL10 VTP-SVR-1(config-vlan)#vlan 20 VTP-SVR-1(config-vlan)#name VL20 VTP-SVR-1(config-vlan)#vlan 30 VTP-SVR-1(config-vlan)#name VL30 |
VTP-SVR-2 |
VTP-SVR-2(config)#interface fa0/1 VTP-SVR-2(config-if)#switchport mode trunk VTP-SVR-2(config-if)#interface fa0/2 VTP-SVR-2(config-if)#switchport mode trunk VTP-SVR-2(config-if)#exit VTP-SVR-2(config)#vtp mode server VTP-SVR-2(config)#vtp domain CISCO VTP-SVR-2(config)#vlan 40 VTP-SVR-2(config-vlan)#name VL40 VTP-SVR-2(config-vlan)#vlan 50 VTP-SVR-2(config-vlan)#name VL50 VTP-SVR-2(config-vlan)#vlan 60 VTP-SVR-2(config-vlan)#name VL60 |
VTP-CLIENT-1 |
VTP-CLIENT-1(config)#interface range fa0/1-3 VTP-CLIENT-1(config-if-range)#switchport mode trunk VTP-CLIENT-1(config)#exit VTP-CLIENT-1(config)#interface fa0/4 VTP-CLIENT-1(config-if)#switchport mode trunk VTP-CLIENT-1(config-if)#exit VTP-CLIENT-1(config)#vtp mode client |
VTP-CLIENT-2 |
VTP-CLIENT-2(config)#interface fa0/1 VTP-CLIENT-2(config-if)#switchport mode trunk VTP-CLIENT-2(config-if)#exit VTP-CLIENT-2(config)#vtp mode client |
VTP-CLIENT-3 |
VTP-CLIENT-3(config)#interface fa0/1 VTP-CLIENT-3(config-if)#switchport mode trunk VTP-CLIENT-3(config-if)#exit VTP-CLIENT-3(config)#vtp mode client |
VTP-Transparent |
VTP-Transparent(config)#interface fa0/1 VTP-Transparent(config-if)#switchport mode trunk VTP-Transparent(config-if)#interface fa0/2 VTP-Transparent(config-if)#switchport mode trunk VTP-Transparent(config-if)#exit VTP-Transparent(config)#vtp mode transparent |
VTP-SVR-3 |
VTP-SVR-3(config)#interface fa0/1 VTP-SVR-3(config-if)#switchport mode trunk VTP-SVR-3(config-if)#exit VTP-SVR-3(config)#vtp mode server VTP-SVR-3(config)#vtp domain CISCO VTP-SVR-3(config)#vlan 100 VTP-SVR-3(config-vlan)#name VL100 VTP-SVR-3(config-vlan)#vlan 200 VTP-SVR-3(config-vlan)#name VL200 VTP-SVR-3(config-vlan)#vlan 300 VTP-SVR-3(config-vlan)#name VL300 VTP-SVR-3(config-vlan)#vlan 400 VTP-SVR-3(config-vlan)#name VL400 VTP-SVR-3(config-vlan)#vlan 500 VTP-SVR-3(config-vlan)#name VL500 |
Dalam percobaan ini, kita akan mempelajari kasus VTP Server Overlapping. Telah disiapkan sebuah switch bernama VTP-SVR-3 yang sudah memiliki 5 VLAN di dalamnya. Switch ini akan dimasukkan ke dalam topologi jaringan yang sebelumnya telah dikonfigurasi menggunakan VTP. Untuk mensimulasikan overlapping, VTP-SVR-3 akan dibuat memiliki Configuration Revision Number yang lebih tinggi dari VTP server lain yang sudah ada di jaringan. Hal ini bertujuan untuk melihat bagaimana switch client dan server lain akan langsung mengganti konfigurasi VLAN-nya mengikuti VTP-SVR-3, dan sekaligus menunjukkan potensi risiko jika switch baru dimasukkan ke jaringan tanpa reset konfigurasi VTP terlebih dahulu.
Verification :
Sebelumnya kita akan melihat VTP Status dan VLAN pada masing-masing VTP Server.
VTP-SVR-1 |
VTP-SVR-1#show vtp status VTP Version capable : 1 to 2 VTP version running : 1 VTP Domain Name : CISCO VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0001.C973.1400 Configuration last modified by 0.0.0.0 at 3-1-93 00:08:15 Local updater ID is 0.0.0.0 (no valid interface found) Feature VLAN : -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 255 Number of existing VLANs : 11 Configuration Revision : 12 MD5 digest : 0xDF 0x28 0x9E 0xA8 0xB4 0x70 0xA9 0x26 0xAA 0x1C 0x4E 0xBA 0x93 0xE6 0x89 0xCD VTP-SVR-1#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/2, Fa0/3, Fa0/4, Fa0/5 Fa0/6, Fa0/7, Fa0/8, Fa0/9 Fa0/10, Fa0/11, Fa0/12, Fa0/13 Fa0/14, Fa0/15, Fa0/16, Fa0/17 Fa0/18, Fa0/19, Fa0/20, Fa0/21 Fa0/22, Fa0/23, Fa0/24, Gig0/1 Gig0/2 10 VL10 active 20 VL20 active 30 VL30 active 40 VL40 active 50 VL50 active 60 VL60 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active |
VTP-SVR-2 |
VTP-SVR-2#show vtp status VTP Version capable : 1 to 2 VTP version running : 1 VTP Domain Name : CISCO VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0001.9693.B100 Configuration last modified by 0.0.0.0 at 3-1-93 00:08:15 Local updater ID is 0.0.0.0 (no valid interface found) Feature VLAN : -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 255 Number of existing VLANs : 11 Configuration Revision : 12 MD5 digest : 0xDF 0x28 0x9E 0xA8 0xB4 0x70 0xA9 0x26 0xAA 0x1C 0x4E 0xBA 0x93 0xE6 0x89 0xCD VTP-SVR-2#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/3, Fa0/4, Fa0/5, Fa0/6 Fa0/7, Fa0/8, Fa0/9, Fa0/10 Fa0/11, Fa0/12, Fa0/13, Fa0/14 Fa0/15, Fa0/16, Fa0/17, Fa0/18 Fa0/19, Fa0/20, Fa0/21, Fa0/22 Fa0/23, Fa0/24, Gig0/1, Gig0/2 10 VL10 active 20 VL20 active 30 VL30 active 40 VL40 active 50 VL50 active 60 VL60 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active |
VTP-SVR-3 |
VTP-SVR-3#show vtp status VTP Version capable : 1 to 2 VTP version running : 1 VTP Domain Name : CISCO VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 000C.CF43.0000 Configuration last modified by 0.0.0.0 at 3-1-93 00:50:58 Local updater ID is 0.0.0.0 (no valid interface found) Feature VLAN : -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 255 Number of existing VLANs : 10 Configuration Revision : 20 MD5 digest : 0xDE 0xAF 0xAF 0xD7 0xF8 0x84 0xE8 0x80 0x81 0x4B 0xEC 0x61 0xDD 0xF4 0xAC 0xA5 VTP-SVR-3#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/2, Fa0/3, Fa0/4, Fa0/5 Fa0/6, Fa0/7, Fa0/8, Fa0/9 Fa0/10, Fa0/11, Fa0/12, Fa0/13 Fa0/14, Fa0/15, Fa0/16, Fa0/17 Fa0/18, Fa0/19, Fa0/20, Fa0/21 Fa0/22, Fa0/23, Fa0/24, Gig0/1 Gig0/2 100 VL100 active 200 VL200 active 300 VL300 active 400 VL400 active 500 VL500 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active |
Terlihat bahwa VTP-SVR-3 memiliki Configuration Revision Number yang lebih tinggi dibandingkan dengan VTP server yang sudah ada di dalam jaringan. Selanjutnya, kita akan menguji dampaknya dengan menyambungkan VTP-SVR-3 ke jaringan yang telah memiliki konfigurasi VTP, untuk melihat bagaimana pengaruhnya terhadap VLAN yang ada.
Setelah memasukkan VTP-SVR-3 ke dalam jaringan,kita akan melakukan verifikasi kembali dengan melihat VTP status dan VLAN yang ada pada VTP-server.
VTP-SVR-1 |
VTP-SVR-1#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/2, Fa0/3, Fa0/4, Fa0/5 Fa0/6, Fa0/7, Fa0/8, Fa0/9 Fa0/10, Fa0/11, Fa0/12, Fa0/13 Fa0/14, Fa0/15, Fa0/16, Fa0/17 Fa0/18, Fa0/19, Fa0/20, Fa0/21 Fa0/22, Fa0/23, Fa0/24, Gig0/1 Gig0/2 100 VL100 active 200 VL200 active 300 VL300 active 400 VL400 active 500 VL500 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active VTP-SVR-1#show vtp status VTP Version capable : 1 to 2 VTP version running : 1 VTP Domain Name : CISCO VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0001.C973.1400 Configuration last modified by 0.0.0.0 at 3-1-93 00:50:58 Local updater ID is 0.0.0.0 (no valid interface found) Feature VLAN : -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 255 Number of existing VLANs : 10 Configuration Revision : 20 MD5 digest : 0xDE 0xAF 0xAF 0xD7 0xF8 0x84 0xE8 0x80 0x81 0x4B 0xEC 0x61 0xDD 0xF4 0xAC 0xA5 |
VTP-SVR-2 |
VTP-SVR-2#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/3, Fa0/4, Fa0/5, Fa0/6 Fa0/7, Fa0/8, Fa0/9, Fa0/10 Fa0/11, Fa0/12, Fa0/13, Fa0/14 Fa0/15, Fa0/16, Fa0/17, Fa0/18 Fa0/19, Fa0/20, Fa0/21, Fa0/22 Fa0/23, Fa0/24, Gig0/1, Gig0/2 100 VL100 active 200 VL200 active 300 VL300 active 400 VL400 active 500 VL500 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active VTP-SVR-2#show vtp status VTP Version capable : 1 to 2 VTP version running : 1 VTP Domain Name : CISCO VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0001.9693.B100 Configuration last modified by 0.0.0.0 at 3-1-93 00:50:58 Local updater ID is 0.0.0.0 (no valid interface found) Feature VLAN : -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 255 Number of existing VLANs : 10 Configuration Revision : 20 MD5 digest : 0xDE 0xAF 0xAF 0xD7 0xF8 0x84 0xE8 0x80 0x81 0x4B 0xEC 0x61 0xDD 0xF4 0xAC 0xA5 |
Saat VTP-SVR-3 terhubung ke jaringan, terlihat bahwa VTP-Server 1 dan VTP-Server 2 langsung menyesuaikan konfigurasi VLAN mereka. Ini terjadi karena VTP-SVR-3 memiliki Configuration Revision yang lebih tinggi, sehingga kedua server otomatis mengikuti pengaturan VLAN yang dimiliki oleh VTP-SVR-3.
0 Komentar