H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 211)

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2) GR Restarter restarting
Figure 22-2 Restarting process for the GR Restarter
As illustrated in Figure 22-2 . The GR Helper detects that the GR Restarter has restarted its routing
protocol and assumes that it will recover within the GR Time. Before the GR Time expires, the GR
Helper will neither terminate the session with the GR Restarter nor delete the topology or routing
information of the latter.
3) GR Restarter signaling to GR Helper
Figure 22-3 The GR Restarter signals to the GR Helper(s) after restart
As illustrated in Figure 22-3 , after the GR Restarter has recovered, it will signal to all its neighbors and
will reestablish GR Session.
4) The GR Restarter obtaining topology and routing information from the GR Helper