Swith kondisi baru/fresh/out-of-box/belum dikonfigurasi apa-apa
Gak ada/tersedia/punya kabel console.

1. 1 buah laptop
2. 3 buah switch seri 890

Target: setting LAB kamu sama dengan topologi jaringan
mengkonfigurasi masing-masing switch

Langkah percobaan:
1. set ip komputer/laptop ke ip 10.10.10.2 255.255.255.0
2. Nyalakan / power-up switch
2. tes ping dari laptop/komputer ke switch 10.10.10.1
3. telnet ke 10.10.10.1 (ini ip default switch)
4. Setting switch 1:

1. Nyalakan / power-up switch
2. Hubung kabel LAN antara port fa0/1 switch ke colokan LAN PC/laptop
3. Telnet dari PC/laptop ke 10.10.10.1 (ini ip default switch baru)

Basic setting
set hostname switch 1 : S1
set password line console 0: cisco, mode loginnya local.
set password line vty 0 15 cisco, mode loginnya local.
set enable secretnya: class

SVI
set interface vlan 99: 172.17.99.1 255.255.255.0

VTP
set vtp mode switch 1: server
set vtp domain name switch 1: Lab5
set vtp password switch 1: cisco

Tambahkan VLAN-VLAN
Tambahkan VLAN-VLAN berikut beserta namanya ke switch 1:
VLAN 10
VLAN 20
VLAN 30
VLAN 99

Trunking
Set mode interface fa0/1 - fa0/4 switch 1: trunking bukan access
Set native vlan untuk trunking interface fa0/1-fa0/4 switch 1: vlan 99




switch 2 : S2
set hostname switch 2: S2
set password line console 0: cisco, mode loginnya local.
set password line vty 0 15 cisco, mode loginnya local.
set enable secretnya: class

SVI 
set interface vlan 99: 172.17.99.1 255.255.255.0

Set trunking
Set mode interfae fa0/1 - fa0/4 switch 2: trunking
Set native vlan untuk trunking interae fa0/1 - fa0/4 switch 2: vlan 99

Set access
Set access buat host PC
Set mode interface fa0/6 switch 2: access

VTP
set vtp mode switch 2: client
set vtp domain name switch 2: Lab5
set vtp password switch 2: cisco

switch 3 :  S3
set hostname switch 3 : S3
set password line console 0: cisco, mode loginnya local.
set password line vty 0 15 cisco, mode loginnya local.
set enable secretnya: class
set interface vlan 99: 172.17.99.1 255.255.255.0

Set trunking
Set mode interface fa0/1 - fa0/4 switch 3: trunking
Set native vlan untuk trunking interface fa0/1-fa0/4 switch 3: vlan 99

Set VTP
set vtp mode switch 3: client
set vtp domain name switch 3: Lab5
set vtp password switch 3: cisco

Wipe/erase access-list 23 pada switch
S3(config)#no access-list 23

S2(config)#no access-list 23

S1(config)# no access-list 23


Pengkabelan
S1 fa0/1 ke S3 fa0/1
S1 fa0/2 ke S3 fa0/2

S1 fa0/3 ke S2 fa0/3
S1 fa0/4 ke S2 fa0/4

S2 fa0/2 ke S3 fa0/4
S2 fa0/1 ke S3 fa0/3

Menggambar topologi spanning-tree tiap VLAN dan menandai siapa root
Biasanya kalau priority tiap switch tidak berubah, yang jadi root adalah sama untuk setiap vlan topologi spanning-tree.

Ini menyebabkan jalur/path yang dipakai/diterapkan setiap vlan itu sama. Sehingga menyebabkan jalur redudansi idle / tidak terpakai / tidak termanfaatkan.

Ini bisa dilihat di show spanning-tree brief
S1# show spanning-tree brief
S2# show spanning-tree brief
S3# show spanning-tree brief

Jika semua vlan root bridge id nya sama, maka semua spanning-tree vlan menggunakan root switch yang sama.
Contoh:
spanning-tree vlan 1, root switchnya switch 1,
spanning-tree vlan 10 root switchnya switch 1 juga,
spanning-tree vlan 20 root switchnya switch 1 juga,
spanning-tree vlan 30 root switchnya switch 1 juga.

VLAN 1


VLAN 10


VLAN 20


VLAN 30

Cara mengamankan jaringan wifi

1. Mengurangi kekuatan dB sinyal
2. Menyembunyikan nama WLAN / hiding SSID
3. Memberi password masuk WLAN
4. Membatasi mac address yang boleh masuk WLAN

Sekian dari saya. Semoga bermanfaat.

Neither edge ports (RSTP) nor PortFast-enabled ports generate topology changes when the port transitions to a disabled or enabled status.


Unlike PortFast, an RSTP edge port that receives a BPDU loses its edge port status immediately and becomes a normal spanning-tree port.

Mesin 4 stroke

False image of Jesus Christ Part 1

Picture 1

Picture 2

Pernikahan bukan tentang sex

Pernikahan bukan hanya tentang sex.

Pernikahan itu menyatukan dua keluarga besar.

Jika kamu menikah, kamu harus mempunyai database yang lebih besar tentang nama-nama relatif (anggota keluarga) kamu. Jadi siap-siap menjadi lebih besar.

Bagi orang yang mempunyai kelainan anti-sosial sejak kecil, kamu harus belajar sejak dini mengingat nama-nama relatif kamu.

Spanning-tree

Steps/algorithm:
1. Chose/decide a root bridge
2. Set the chosen root bridge bridge priority. Because switch priority is the only variable the used as spanning-tree root bridge calculation.
3. Set spanning-tree port fast to every ports that connect the client to switch. Do not set spanning-tree to port(s) that connect to switch to switch.

Topology or network diagram:

 In above topology, switch 15 is suitable as backbone switch.

Source of reference: http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/5234-5.html

 Troubleshoot commands:

• show spantree vlan_id —Shows the current state of the spanning tree for this VLAN ID, from the perspective of the switch on which you issue the command.
  
• show spantree summary —Provides a summary of connected spanning tree ports by VLAN.
  
• show spantree statistics —Shows spanning tree statistical information.
  
• show spantree backbonefast —Displays whether the spanning tree BackboneFast Convergence feature is enabled.
  
• show spantree blockedports —Displays only the blocked ports.
  
• show spantree portstate —Determines the current spanning tree state of a Token Ring port within a spanning tree.
  
• show spantree portvlancost —Shows the path cost for the VLANs on a port.
  
• show spantree uplinkfast —Shows the UplinkFast settings.