Configuring Ospf Graceful Restart; Graceful Restart Mechanism For Several Commonly Used Protocols - 3Com MSR 50 Series Configuration Manual

1960 C 105: GR O
HAPTER
Graceful Restart
Mechanism for
Several Commonly
Used Protocols
VERVIEW
Figure 577 The GR Restarter obtains topology and routing information from the GR
Helper
Router A
Router B
GR helper
Signals to establish GR session
As illustrated in Figure
routing information from all its neighbors through the GR sessions between them
and calculates its own routing table based on this information.
Comware supports Graceful Restart based on Boarder Gateway Protocol (BGP),
Open Shortest Path First (OSPF), Intermediate System to Intermediate System
(IS-IS), Label Distribution Protocol (LDP), and MPLS with Resource Reservation
Protocol Traffic Engineering (MPLS RSVP-TE).
For the implementation and configuration procedure of the Graceful Restart
mechanism of the above protocols, refer to
on page 853, "Configuring OSPF Graceful Restart" on page
"Configuring IS-IS GR" on page 904
"MPLS TE Configuration" on page
Router D
GR helper
GR restarter
Router C
GR helper
577, the GR Restarter obtains the necessary topology and
and "Configuring LDP GR" on page 1333
1345.
"Configuring BGP Graceful Restart"
952, and
and