Cisco Systems 512, 612

Chapter 1 Introducing the Cisco Wide Area Application Engine

Hardware Features

1-18

Cisco Wide Area Application Engine 512 and 612 Hardware Installation Guide

OL-9137-02

Some switches support automatic medium-dependent interface crossover

(MDIX). You can configure MDIX by using the mdix auto global configuration

switch command. If your switch supports MDIX, you do not need to follow these

cabling rules because MDIX automatically adjusts transmit and receive pairs

when an incorrect cable type (crossover or straight-through) is installed on a

10/100 Fast Ethernet port. However, when you configure MDIX, you must also

configure the port to use autosense (not manual selection of speed/duplex).

Caution If you are connecting to Fast Ethernet ports on both the LAN and the WAN sides

of the WAE inline appliance, you must consider the types of devices that are being

connected, and you must use the correct cables. You must follow these cabling

instructions for the inline network adapter to work properly. (See Table 1-9. For

illustrations and examples, see the “Installation Scenarios and Cabling Examples

for Fast Ethernet Connections” section on page 1-20.)

Router to router (no WAE) Crossover or Straight-through

Switch to WAE and

WAE t o R ou ter

Crossover or Straight-through

Switch to WAE and

WAE to Switch

Crossover or Straight-through

Router to WAE and

WAE t o R ou ter

Crossover or Straight-through

WAE t o WA E Crossover or Straight-through

Table 1-8 Cable Requirements for WAE Connections Using Gigabit

Ethernet (continued)

Connection Required Cable