Product guide

Default Monitoring port speed settings
Make sure that the switch/router ports connected to the Sensor monitoring ports match the Sensor
configuration.
Table 4-1 Default Monitoring port speed settings
Monitoring Ports Operating Mode Speed/Duplex Setting
10/100/1000 ports SPAN Auto-negotiation is OFF;
Speed and Duplex are configurable
Tap Auto-negotiation is ON;
Speed is configurable;
Duplex is always half
In-Line Auto-negotiation is OFF;
Speed and Duplex are configurable
Cable types for routers, switches, hubs, and PCs
This section describes the types of cables that you require to connect the Sensor to other network
devices:
• Use a crossover Ethernet RJ45 cable to connect a router port to 10/100/1000 Monitoring ports.
• Use a straight-through Ethernet RJ45 cable to connect a switch/hub port to 10/100/1000
Monitoring ports.
• Use a crossover Ethernet RJ45 cable to connect a router port to PC to the Sensor Management
port.
You should also use a crossover Ethernet RJ45 cable to connect a PC to the Sensor monitoring port.
Cable the Sensor to monitor in in-line mode
In-Line mode requires that you use a pair of Sensor ports as described in the section, How to use peer
ports.
Cabling Sensors for in-line mode requires a brief network interruption as you insert it in the flow of
network traffic. To avoid extended network downtime, you should cable a Sensor for in-line mode after
you have completed all other configuration tasks.
In case the Sensor fails, the Sensor's internal 10/100/1000 ports fail-open or fail-close, depending on
how the ports are configured. Note that in M-1250/1450 Sensors, dongles are not required for
fail-close operation. The Sensor 10/100/1000 ports support Auto-MDIX.
Task
1
Plug a Cat 5/Cat 5e cable into a monitoring port, for example port 1A.
See Cable types for routers, switches, hubs, and PCs to determine which cable type to use with
which type of network device.
2
Plug a Cat 5/Cat 5e cable into the corresponding peer port.
If you had used 1A in step 1, then the corresponding peer port is 1B.
4
Attaching cables to the Sensor
Cable the Sensor to monitor in in-line mode
22
McAfee
®
Network Security Platform M-1250/M-1450 Sensor Product Guide