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NE40E V800R010C10SPC500 Feature Description - Network Reliability 01

This is NE40E V800R010C10SPC500 Feature Description - Network Reliability
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Terminology for the Uninterruptible Service Technology

Terminology for the Uninterruptible Service Technology

Terms

Term

Definition

GR restarter

A device that has two main control boards: an AMB and an SMB. Its routing protocols support the GR capability. When a GR restarter performs an AMB/SMB switchover, it notifies its neighbors of the switchover and instructs them to maintain adjacencies with it.

GR helper

A neighbor of a GR restarter. A GR helper must be able to identify GR signaling. When the GR restarter performs an AMB/SMB switchover, the GR helper maintains the adjacency with the GR restarter. After the AMB/SMB switchover is complete, the GR helper assists the GR restarter in restoring network topology information.

GR session

A GR capability negotiation process between a GR restarter and a GR helper. A GR session includes protocol restart notification and information exchanging during a protocol restart. The GR restarter and GR helper can use a GR session to obtain each other's GR capability.

GR time

A period of time taken for a GR restarter and GR helper to establish a GR session. When the GR helper finds out that the GR restarter is Down, it preserves the topology or routing information sent from the GR restarter within the specified GR time.

Acronyms and Abbreviations

Acronym and Abbreviation

Full Name

FIB

forwarding information base

GR

graceful restart

HA

high availability

NSR

Non-Stop Routing

NSR

non-stop routing

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Updated: 2019-01-03

Document ID: EDOC1100055045

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