How does Cisco IOS XE support high availability and redundancy?

Answers

Cisco IOS XE achieves high availability through several key features:

In-Service Software Upgrade (ISSU): Allows updates without interrupting packet forwarding.
StackWise Technology: Provides seamless failover by stacking switches.
Dual Supervisors: Ensures continuous operation if one supervisor fails.
High Availability Protocols: Uses protocols like BFD, BGP, OSPF, and VRRP for network stability.

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