Switching: VLAN’s

What is a LAN Switch?   Logically, we really need to start with the question, what is a LAN switch? A LAN switch is a OSI model Layer 2 device,…

Configuring SNMP on Switches, and Syslog

Introduction   This article follows up on last month’s article, Configuring SNMP in Cisco Routers. We’ll talk briefly about SNMP and switches, and also about Syslog. previous article  Configuring SNMP…

Configuring SNMP in Cisco Routers

Introduction   From doing this network management work, it is apparent that Cisco has been adding a little here, a little there, to the SNMP capabilities of the routers and…

Quality of Service, Part III

Introduction   This month we continue looking at Quality of Service (QoS) in Cisco devices. This article looks at Traffic Shaping Policy Routing QoS Policy Propagation via BGP (QPPB) Traffic…

Quality of Service — Part II

In this article, we’ll look at the following topics: IP Precedence bits Random Early Detection (RED) Committed Access Rate (CAR) Some Cisco QoS Links The IP Precedence bits allow us…

OSPF — Part III

OSPF Network Type   Please also read the previous article  OSPF and Route Summarization– Part II   OSPF has three network types: Broadcast networks (Ethernet, Token Ring, FDDI) Nonbroadcast multiaccess…

Introducing OSPF– Part I

Introduction   The OSPF routing protocol is playing an increasingly important role in modern networks. It is a multi-vendor standard. We’ll take a look at OSPF basics in this article….

How to Configuring BGP

Recall that an IGP is an Internal Gateway Protocol: whatever your routers speak “at home” — probably RIP, IGRP, EIGRP, or OSPF. We saw that one of the usual reasons…