Avaya Configuring IP Services Bedienungsanleitung PDF herunterladen (Seite 374)

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Configuring IP Services

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RIPSO Example

The router in Figure 10-2 has RIPSO configured on all three IP interfaces. The

security ranges specified for each interface vary, as shown. (For simplicity, this

example assumes that none of the interfaces requires any authority flags on

inbound and outbound traffic, but any flags that are present are acceptable.)

When host 1.1.0.1 broadcasts an all-subnets broadcast IP datagram with the

security-level classification set to Secret, the router compares the datagram’s

classification with the range configured on inbound interface 1.1.0.2. Because the

Secret security level is within the range configured on the interface, the router

accepts the datagram. In order to forward the datagram, the router does the

following:

• Compares the datagram’s security level, Secret, to the security-level ranges

configured on interfaces 1.2.0.2 and 1.3.0.2

• Forwards the datagram on interface 1.2.0.2, because Secret is within the

security range configured on the interface

• Does

not

forward the datagram on interface 1.3.0.2, because Secret is outside

the security range configured on the interface

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