segunda-feira, 1 de julho de 2024

domingo, 30 de junho de 2024

Tudo o que sempre quis saber sobre fibra ótica

1. Intro

Existem alguns termos e conceitos que precisamos de saber quando falamos de fibra ótica, tentarei colocar aqui o mais essencial.

quinta-feira, 21 de dezembro de 2023

Configuring Syslog on a Cisco Nexus Switch

 There's a couple of default VRF configured on the Cisco Nexus switch: default and management. The management VRF will be used if the Nexus switch is configured with a static default route (a Layer 3 switch).

quarta-feira, 22 de novembro de 2023

Cisco: Block Multicast on a Specific Port

 Quick couple of lines to disable multicast traffic on a specific interface or port.

interface GigabitEthernet1/0/1
 switchport block multicast
 storm-control multicast level 0.00
!

The first command stops outbound multicasts from getting out.
The second command prevents inbound multicasts from entering the switchport.

Cisco: 877W Configure Wireless and Wired on Single Subnet

  This article will demonstrate how to configure a cisco router to allow the wireless and wired networks to communicate on the same vlan and subnet.

IOS version: 12.4(15)T12
Router Model: Cisco 877W
Router Series: Cisco 880 Series Integrated Services Routers


  1. Configure DHCP Pool
  2. Configure the SSID
  3. Configure Vlan 1 Interface
  4. Configure Dot11Radio Interface
  5. Configure the Bridge Interface

segunda-feira, 11 de julho de 2022

Hot adding or removing a Cisco 3750 from a stack


When using a Cisco 3750 stack connected through stackwise technology you can add or remove a Cisco switch while the stack stays on. If you are adding or removing a switch from the stack, it is very important that the switch is turned OFF. The rest of the stack can keep doing its business.

segunda-feira, 13 de novembro de 2017