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| Exam Code: | 300-420 |
| Exam Name: | Designing Cisco Enterprise Networks |
| Certification Provider: | Cisco |
| Free Question Number: | 45 |
| Version: | v2021-08-28 |
| Rating: | |
| # of views: | 648 |
| # of Questions views: | 10931 |
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No.# In Cisco networking devices, packet forwarding is provided by Cisco Express Forwarding.
Cisco Express Forwarding maintains the FIB and uses the FIB information that was current at the time of the switchover to continue forwarding packets during a switchover.
https://www.cisco.com/en/US/technologies/tk869/tk769/technologies_white_paper0900aecd801dc5e2.html
The ability to continue packet forwarding eliminates downtime during the switchover.