User`s manual

PT-7828 User’s Manual Featured Functions
3-22
2nd Trap Server IP/Name
Setting Description Factory Default
Retries Enter Inform Retry number 1
Time out Enter Inform Timeout window 1
Private MIB information
Switch Object ID
Setting Description Factory Default
8691.7.15
This indicates the PT-7828’s enterprise
value.
Fixed
NOTE: The Switch Object ID cannot be changed.
Using Communication Redundancy
Communication redundancy on your network helps protect critical links against failure, protects
against network loops, and keeps network downtime at a minimum.
Communication redundancy functions allow the user to set up redundant loops in the network to
provide a backup data transmission route in the event that a cable is inadvertently disconnected or
damaged. This is a particularly important feature for industrial applications, since it could take
several minutes to locate the disconnected or severed cable. For example, if the PT-7828 is used as
a key communications component of a production line, several minutes of downtime can result in
a big loss in production and revenue. The PT-7828 supports three different protocols for
communication redundancy—Rapid Spanning Tree Protocol (IEEE-802.1w) and Turbo Ring,
and Turbo Ring V2.
When configuring a redundant ring, all switches on the same ring must be configured using the
same redundancy protocol. You cannot mix the Turbo Ring, Turbo Ring V2, and STP/RSTP
protocols within a ring. The following table lists the key differences between each feature. Use this
information to evaluate each the benefits of each, and then determine which features are most
suitable for your network.
Turbo Ring V2 Turbo Ring STP RSTP
Topology Ring Ring Ring, Mesh Ring, Mesh
Recovery Time < 20 ms < 300 ms Up to 30 sec. Up to 5 sec
NOTE
Most managed switches by Moxa support two proprietary Turbo Ring protocols:
y Turbo Ring refers to the original version of Moxa’s proprietary redundant ring protocol,
which has a recovery time of under 300 ms.
y Turbo Ring V2 refers to the new generation Turbo Ring, which has a recovery time of under
20 ms.