Avaya Configuring IP Services Bedienungsanleitung PDF herunterladen (Seite 34)

Configuring IP Services

2-6

Using the Alternate Associated Address Option

The alternate associated address option ensures that a network on an unnumbered

interface remains reachable. In the event that an associated address becomes

invalid, IP switches to a usable address (if one is available).

Conﬁguring IP on a Router Slot

IP runs on all slots that contain IP interfaces.When you add an IP interface to a

circuit, Site Manager enables IP on the slot.

By default, IP runs with certain characteristics and services enabled. You can

accept these default characteristics or use the IP Global Parameters window (see

Figure 2-12) to customize IP — to enable and disable IP on the router, specify

whether the router forwards IP trafﬁc to other routers, and supply aging, time-to-

live, and other values. IP global parameters also allow you to help IP software

preallocate system resources by providing the router with an estimate of the

number of networks and hosts the router will be required to support.

When you set parameters on the IP Global Parameters window, you are affecting

the way IP operates on all slots where it is conﬁgured.

Note: In the event that an unnumbered associated address becomes

unreachable, some functionality may be lost for certain protocols over the

unnumbered interface.

Note: In some conﬁgurations, changing the associated address can affect the

way routes are advertised. In a RIP conﬁguration, for example, if you change

the associated address for an unnumbered interface conﬁgured with RIP, you

may change the way RIP advertises subnets.

For instructions on using Site Manager to select the alternate unnumbered associated

address option, see the UnNumbered Assoc Alternate parameter on page 2-49.

For instructions on using Site Manager to conﬁgure and customize IP services on the

router, see “Conﬁguring a Circuit and Adding an IP Interface” on page 2-32.

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Avaya Configuring IP Services Bedienungsanleitung Seite 34