 | Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
RSVP-TE graceful restart enables routers to maintain MPLS forwarding state when a link or node failure occurs. In a link failure, control communication is lost between two nodes, but the nodes do not lose their control or forwarding state.
A node failure occurs when the LSR has a failure in the RSVP-TE control plane, but not in the data plane. The LSR maintains its data forwarding state. Traffic can continue to be forwarded while RSVP-TE restarts and recovers. The graceful restart feature supports the restoration and resynchronization of RSVP-TE states and MPLS forwarding state between the restarting router and its RSVP-TE peers during the graceful restart recovery period.
The RSVP-TE graceful restart feature enables an LSR to gracefully restart, to act as a graceful restart helper node for a neighboring router that is restarting, or both.
| Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |