Avaya Configuring Interface and Router Redundancy Uživatelský manuál stáhnout pdf (Strana 39)

Implementation Notes

114079 Rev. B 3-3

Router Redundancy Requirements

All members of a router redundancy group must

• Be the same router type; for example, BCN

, BLN

, or ASN™.

• Have the same hardware conﬁguration. This includes CPU and interface

module types, slot and port locations of the backed-up interfaces, and

resources.

• Have the same software conﬁguration. For example, all group members must

be running the same router software version and have the same loadable

modules conﬁgured.

• Use exactly the same router redundancy conﬁguration, except for the

member ID.

Using Interface and Router Redundancy in Combination

Use interface redundancy with router redundancy to provide combined protection

from internal router failure and total router failure. The combination of interface

and router redundancy provides better interface protection than is possible using

interface redundancy alone.

You can conﬁgure backed-up interfaces within redundant routers, and you can

also conﬁgure some interfaces that are not backed up. Interface redundancy allows

data transmission to occur without interruption in the event of a failed interface.

Router redundancy provides the security of uninterrupted network service.

Caution: If you conﬁgure interface redundancy across slots with router

redundancy, and the CPU board for the slot with the active interface fails,

router redundancy may take precedence over interface redundancy, even

though there is a member of the interface redundancy group available to

transmit data. The result will be unnecessary delays in data transmission.

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Avaya Configuring Interface and Router Redundancy Uživatelský manuál Strana 39