key chain

To configure a key chain, an administrator defines a series of keys, and the router software rotates through them. Each key also has an associated time interval, or "lifetime," for which it will be activated. The authentication code included in each key is called the key string.

Key chains can be configured for routing protocols including the Routing Information Protocol (RIP) and Enhanced Interior Gateway Routing Protocol (EIGRP).

Read more about key chain: - Cisco explains router-to-router authentication. - This tip explains how to implement a key chain in RIP.

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