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Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
Chapter 4 WAVE Inline Network Adapter
Inline 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 4-3
. For illustrations and examples, see the
“Installation Scenarios and
Cabling Examples for Fast Ethernet Connections” section on page 4-7
.)
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.
Router to WAVE and
WAVE to Router
Crossover or straight-through
Crossover or straight-through
WAVE to WAVE
Crossover or straight-through
Table 4-2
Cable Requirements for WAVE Connections Using Gigabit
Ethernet (continued)
Connection
Required Cable
Summary of Contents for WAVE-274
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