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3com S7906E Installationsanweisungen

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1-4 
Figure 1-4 The GR Restarter obtains topology and routing information from the GR Helper 
 
 
As illustrated in 
, the GR Restarter obtains the necessary topology and routing information 
from all its neighbors through the GR sessions between them and calculates its own routing table based 
on this information. 
Graceful Restart Mechanism for Several Commonly Used Protocols 
Comware supports Graceful Restart based on protocols supporting IPv6, such as MPLS Label 
Distribution Protocol (MPLS LDP), MPLS with Resource Reservation Protocol Traffic Engineering 
(MPLS RSVP-TE), Border Gateway Protocol (BGP), Intermediate System to Intermediate System 
(IS-IS), Open Shortest Path First (OSPF), and OSPFv3. 
For the implementation and configuration procedure of the Graceful Restart mechanism of the above 
protocols, refer to the related manuals in the IP Routing Volume and MPLS Basics and MPLS TE 
Configuration in the MPLS Volume.