Cisco 1711 - Security Access Router Przewodnik Instalacji Pobierz pdf (Strona 7)

2-7

Cisco 1711 and Cisco 1712 Security Access Routers Hardware Installation Guide

OL-4050-02

Chapter 2 Installation

Connecting Power to the Router

Step 2 Connect the other end of the cable to a port on the hub, switch, or the Ethernet

port on your computer.

Note The example provided in Figure 2-3 on page 2-6 shows connectivity to

a hub. The router’s Ethernet switch port can be connected to other

networked devices, such as a switch or computer with a NIC. If you are

connecting the router’s switch port to another switch, use a crossover

cable.

Note If you are connecting a computer to the router’s switch port, it will take about

30 seconds for connectivity to be established due to the Spanning-Tree Protocol

(STP) disabling the ports until a loop-free topology is determined. When you use

this type of connection, you must configure the spanning-tree portfast command

on the router’s switch port. The spanning-tree portfast command causes a

spanning tree port to enter the forwarding state immediately, bypassing the

listening and learning states.

Caution You can use the portfast feature on switch ports that are connected to a single

workstation or PC only to allow those devices to connect to the network

immediately, rather than waiting for spanning tree to converge. Do not use the

portfast feature on ports that are connected to networking devices such as hubs,

routers, switches, bridges, or concentrators.

Connecting Power to the Router

Read the following warnings before connecting the router to power.

Warning

The power supply is designed to work with TN power systems.

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