H3C LS-3100-52P-OVS-H3 Operation Manual - page 1904
Manual is about: S5500-EI Series Ethernet Switches
of
1918
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Graceful Restart Communication Procedure
Configure a device as GR Restarter in a network. This device and its GR Helper must support GR or be
GR capable. Thus, when GR Restarter restarts, its GR Helper can know its restart process.
In some cases, GR Restarter and GR Helper can replace each other.
The communication procedure between the GR Restarter and the GR Helper works as follows:
1) Establishing a GR session.
Figure 1-1 A GR session is established between the GR Restarter and the GR Helper
As illustrated in
Figure 1-1
, Router A works as GR Restarter, Router B, Router C and Router D are the
GR Helpers of Router A. A GR session is established between the GR Restarter and the GR Helper.
2) Restarting GR Restarter