Juniper Networks IDP250 Bedienungsanleitung PDF herunterladen (Seite 53)

NOTE: IDP75, IDP250, IDP800, and IDP8200 support auto-MDIX.

Connecting Devices That Do Not Support Auto-MDIX

For connections to a firewall or server, use a crossover cable.

For connections to a switch or hub, use a straight-through cable.

NOTE: Conventionally, crossover cables have an orange outer jacket. If you are not

sure if your Cat 5 cable is a crossover or straight-through cable, lay the two ends

side-by-side and observe the order of the wire colors. If the colors are in the same

order, it is a straight-through cable; otherwise, it is a crossover cable.

Connecting Devices to Support Internal Bypass

When internal bypass activates, it physically connects the pair of traffic interfaces

to each other with a crossover connection.

If the device does not support auto-MDIX, take special care to choose the right cables.

Suppose you plan to place the IDP inline between a firewall and a switch. First, take

note of the correct cable choice for a direct connection between the firewall and

switch. Would you use a straight-through cable or a cross-over cable?

If the two devices would be connected with a straight-through cable, then use a

crossover cable between the firewall and IDP and a straight-through cable between

IDP and the switch. When internal bypass activates and crosses-over the connection

between the IDP traffic interface pair, the connection between the firewall and the

switch will flow as if through a straight-through cable.

If the two devices would be connected with a cross-over cable, then use two

straight-through cables. When internal bypass activates, this will have the result of

creating one, long cross-over cable connecting the devices.

Connecting and Disconnecting Fiber Cables

The following procedures describe how to connect and remove a Gigabit Ethernet

cable to and from the transceiver.

To connect a Gigabit Ethernet cable to a transceiver:

1. Hold the cable clip firmly but gently between your thumb and forefinger with

your thumb on top of the clip and your finger under the clip. Do not depress the

clip ejector on top of the clip.

2. Make sure the transceiver ejector under the port is not pressed in; otherwise, if

you attempt to remove the cable the transceiver might come out with the cable

still attached.

Connecting and Disconnecting Fiber Cables ■ 37

Chapter 6: Connecting the IDP Traffic Interfaces to Your Network and Verifying Traffic Flow

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Juniper Networks IDP250 Bedienungsanleitung Seite 53