Network Adapter Cabling Requirements. Cisco WAVE 7571 Wide Area Virtualization Engine , WAVE 8541 Wide Area Virtualization Engine , WAVE 294 Wide Area Virtualization Engine , WAVE 594 Wide Area Virtualization Engine , WAVE 694 Wide Area Virtualization Engine , WAVE 7541 Wide Area Virtualization Engine , Wide Area Virtualization Engines

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Chapter 5 WAVE Interface Modules

Network Adapter Cabling Requirements

Table 5-4

LED Name

3 Speed

Inline Network Adapter LEDs (continued)

Color

—

Green

Yellow

State

Off

Description

No link is detected.

10 Gigabit Ethernet connection.

1 Gigabit Ethernet connection.

Network Adapter Cabling Requirements

Gigabit Ethernet—Copper

The Interface Module ships with two types of cables: crossover and straight-through. When you connect the WAVE inline network adapter, the cable that you use depends on the link speed (Gigabit Ethernet or

Fast Ethernet) and the types of devices (DCE or DTE) being connected.

Note You must retain the same link speed from one end of the connection to the other end. Inline adapter interfaces are able to autonegotiate link speeds. If you configure any of your connecting interfaces for

Fast Ethernet (whether on a switch or a router), your WAVE inline adapter uses Fast Ethernet. If you configure any of your connecting interfaces for Gigabit Ethernet, your WAVE inline adapter uses Gigabit

Ethernet. Speed and duplex settings are port specific so that two inline ports can negotiate different speeds independently.

If you are connecting a WAVE inline appliance between two devices using Gigabit Ethernet, you can use either straight-through cables, crossover cables, or any combination of the two cable types, regardless of the type of device. However, for consistency, we recommend that you use straight-through cables for all

Gigabit Ethernet connections.

Table 5-5 shows the cable requirements for WAVE appliance and non-WAVE appliance connections

when you are using Gigabit Ethernet end to end.

Table 5-5 Cable Requirements for WAVE Connections Using Gigabit Ethernet

Connection

Switch to switch (no WAVE)

Switch to router (no WAVE)

Router to router (no WAVE)

Switch to WAVE and

WAVE to Router

Switch to WAVE and

WAVE to Switch

Router to WAVE and

WAVE to Router

WAVE to WAVE

Required Cable

Crossover or straight-through

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Cisco Wide Area Virtualization Engine 594 and 694 Hardware Installation Guide

Chapter 5 WAVE Interface Modules

Network Adapter Cabling Requirements

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 WAVE 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 5-6

. For illustrations and examples, see Installation Scenarios and Cabling Examples for Fast

Ethernet Connections

To connect the inline network adapter using the correct cables for Fast Ethernet connections, follow these steps:

Step 1 Determine the type of cable that you would use for a direct connection between your two end devices

(without a WAVE inline network appliance connected between them) by using the following standard cabling rules:

• When you are directly connecting two network devices that are similar, such as two switches, use a crossover cable.

• When you are directly connecting two network devices that are different, such as a switch and router, use a straight-through cable.

Note Because the inline network adapter has an internal crossover connection that becomes active when the InlineGroup interface is placed in mechanical bypass mode, you must decide which cable you would use to connect the two network devices directly, and then you must install the other cable type (on one side, usually the WAN side of the inline appliance) instead.

Table 5-6

shows the cable requirements for WAVE and non-WAVE connections when you are using Fast

Ethernet end to end.

Table 5-6 Cable Requirements for WAVE Connections Using Fast Ethernet

Connection

Switch to switch (no WAVE)

Switch to router (no WAVE)

Router to router (no WAVE)

Switch to WAVE and

WAVE to Router

Switch to WAVE and

WAVE to Switch