Avaya Configuring IP, ARP, RIP, and OSPF Services Uživatelský manuál stáhnout pdf (Strana 175)

Customizing OSPF Services

117356-E Rev 00

6-5

Configuring the Soloist and Backup Soloist on a Slot

The OSPF protocol is implemented as a soloist -- that is, as a single process

running on a single slot of a router. When you add an OSPF interface to a circuit,

the router enables OSPF on a slot. If the slot on which the OSPF soloist is running

goes down, the router tries to run OSPF on another slot.

Each time the OSPF soloist is restarted, all of the routing information is lost and

must be relearned from the network. The OSPF backup soloist provides a method

of preserving information learned from the network in the event of an OSPF crash

or slot removal, avoiding the time-consuming and resource-intensive process of

relearning routing information. In the event of a crash or slot removal, transition

between the OSPF primary and backup soloists occurs without relearning routing

information from the network.

By default, the router uses any available slot for the OSPF soloist. You can use the

BCC or Site Manager to specify a slot.

By default, OSPF does not maintain a copy of the link state database (LSDB) for

the backup soloist. You can use the BCC or Site Manager to enable this feature.

Using the BCC

To specify a slot for the OSPF soloist, navigate to the global OSPF prompt (for

example,

box; ip; ospf

) and enter:

slot-mask

<slot>

slot

all-slots

(the default) or an integer from 1 through 14 to indicate a slot.

5. Set the

Router ID

parameter. Click on

Help

or see the parameter description on

page A-36

6. Click on

. 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 Uživatelský manuál Strana 175