Understanding How Nonstop Bridging Preserves Layer 2 Protocol Information During A Routing Engine Switchover; Nonstop Bridging Concepts; During A Routing Engine Switchover - Juniper EX9200 Features Manual
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CHAPTER 4
Understanding How Nonstop Bridging
Preserves Layer 2 Protocol Information
During a Routing Engine Switchover
Nonstop Bridging Concepts
Copyright © 2017, Juniper Networks, Inc.
Nonstop Bridging Concepts on page 25
Nonstop bridging uses the same infrastructure as graceful Routing Engine switchover
(GRES) to preserve interface and kernel information. However, nonstop bridging also
saves Layer 2 Control Protocol (L2CP) information by running the Layer 2 Control Protocol
process (l2cpd) on the backup Routing Engine.
NOTE:
To use nonstop bridging, you must first enable graceful Routing Engine
switchover on your routing (or switching) platform. For more information
about graceful Routing Engine switchover, see
Routing Engine Switchover" on page
Figure 3 on page 26
shows the system architecture of nonstop bridging and the process
a routing (or switching) platform follows to prepare for a switchover.
"Understanding Graceful
3.
25
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