Avaya Configuring IP, ARP, RIP, and OSPF Services Manual de usuario descargar pdf (Pagina 139)

100

101

Customizing RIP Services

117356-E Rev 00

5-9

Specifying the Update Mode

RIP can issue routing updates in the following modes:

• Poisoned reverse (the default)

•Split horizon

• Actual cost

Poisoned reverse mode and split horizon mode are schemes for controlling the

way a router advertises a route to the neighbor from which it learned the route.

In poisoned reverse updating, a router that sends updates to a neighbor includes

routes learned from that neighbor but sets the route metric to infinity.

In split horizon updating, a router that sends updates to a neighbor omits routes

that it learned from that neighbor.

On certain interfaces -- for example, on a frame relay interface that has virtual

connections (VCs) to different routers that are part of the same logical IP subnet --

you may need to advertise all learned routes with the actual cost.

By default, RIP sends poisoned reverse updates. You can use the BCC or Site

Manager to specify a different update mode.

5. Set the

RIP Supply

parameter. Click on

Help

or see the parameter description on

page A-62

6. Click on

Apply

, and then click on

Done

. You return to the Configuration Manager

window.

Site Manager Procedure

(continued)

You do this System responds

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Avaya Configuring IP, ARP, RIP, and OSPF Services Manual de usuario Pagina 139

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