VPN NSR
As networks develop fast, the demand for the triple play services of the Public Switched Telephone Network (PSTN), TV network, and Internet becomes more and more stringent. Operators pose high requirements for reliability on IP networks. Non-Stop Routing (NSR), as a High Availability (HA) solution, is therefore introduced.
NSR ensures that the control plane of a neighbor does not sense the fault on the control plane of the local device which provides a slave control plane. In this process, the neighbor relationships set up through specific routing protocols, MPLS, and other protocols that carry services are not interrupted.
As an HA solution, NSR ensures that user services are not affected or least affected in the case of device failures.
During the master/slave switchover, VPN NSR ensures the continuous forwarding and continuous advertisement of VPN routes. In this process, the neighbor relationships are not affected, with neighbors not knowing the switchover on the local device. This ensures uninterrupted transmission of VPN services.
For detailed NSR configurations, see NSR Configuration in S9300, S9300E, and S9300X V200R010C00 Configuration Guide - Reliability.
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