H3C Technologies H3C S10500 Series Switches - Manual (Page 12)

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Technology Introduction Reference
Track
The track module is used to implement collaboration between
different modules. The collaboration here involves three parts: the
application modules, the track module, and the detection modules.
These modules collaborate with one another through collaboration
entries. That is, the detection modules trigger the application
modules to perform certain operations through the track module.
More specifically, the detection modules probe the link status,
network performance and so on, and inform the application
modules of the detection result through the track module. Once
notified of network status changes, the application modules deal
with the changes to avoid communication interruption and network
performance degradation.
Track configuration in
the High Availability
Configuration Guide
Protection switchover technologies
Protection switchover technologies aim at recovering network faults. They back up hardware, link, routing,
and service information for switchover in case of network faults, to ensure continuity of network services.
Table 3 Protection switchover technologies
Technology Introduction Reference
Active and
Standby
Switchover
Devices supporting active and standby switchover are normally
equipped with two MPUs, with one being the active MPU, and the
other being the standby MPU. The configurations on the standby
MPU are the same as those on the active MPU. When the active
MPU fails or is plugged out, the standby MPU automatically
becomes the active MPU to ensure non-stop operating of the
devices.
Active and standby
switchover
configuration in the
High Availability
Configuration Guide
Ethernet Link
Aggregation
Ethernet link aggregation, most often simply called link
aggregation, aggregates multiple physical Ethernet links into one
logical link to increase link bandwidth beyond the limits of any one
single link. This logical link is an aggregate link. It allows for link
redundancy because the member physical links can dynamically
back up one another.
Ethernet ink
aggregation
configuration in the
Layer 2 – LAN
Switching
Configuration Guide
Smart Link
Smart Link is a feature developed to address the slow convergence
issue with STP. It provides link redundancy as well as fast
convergence in a dual uplink network, allowing the backup link to
take over quickly when the primary link fails.
Smart link
configuration in the
High Availability
Configuration Guide
MSTP
As a Layer 2 management protocol, the Multiple Spanning Tree
Protocol (MSTP) eliminates Layer 2 loops by selectively blocking
redundant links in a network, and in the mean time, allows for link
redundancy.
Spanning tree
configuration in the
Layer 2 – LAN
Switching
Configuration Guide
RRPP
The Rapid Ring Protection Protocol (RRPP) is a link layer protocol
designed for Ethernet rings. RRPP can prevent broadcast storms
caused by data loops when an Ethernet ring is healthy, and rapidly
restore the communication paths between the nodes in the event
that a link is disconnected on the ring.
RRPP configuration in
the High Availability
Configuration Guide