User`s manual

EDS-828 Series Featured Functions
3-19
agent will resend the trap to the NMS agent. The maximum timeout time is 300 seconds (default is 1 second),
and the maximum number of retries is 99 times (default is 1 time). When the SNMP agent receives
acknowledgement from the NMS, it will stop resending the inform messages.
Trap Server IP/Name
Setting Description Factory Default
IP or Name Enter the IP address or name of the Trap Server used by your
network.
None
Trap Community
Setting Description Factory Default
character string Use a community string match for authentication (maximum of
30 characters).
public
Inform Mode Select
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
8691.7.14 The EDS-828’s enterprise value Fixed
NOTE: The Switch Object ID cannot be changed.
Using Communication Redundancy
Setting up Communication Redundancy on your network helps protect critical links against failure, protects
against network loops, and keeps network downtime at a minimum.
The Communication Redundancy function allows 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
feature is particularly important for industrial applications, since it could take several minutes to locate the
disconnected or severed cable. For example, if the EDS-828 is used as a key communications component of a
production line, several minutes of downtime could result in a big loss in production and revenue. The EDS-828
supports three different protocols to support this communication redundancy function—Rapid Spanning
Tree/ Spanning Tree Protocol (IEEE 802.1w/1D), Turbo Ring, and Turbo Ring V2.
When configuring a redundant ring, all switches on the same ring must be configured to use the same
redundancy protocol. You cannot mix the “Turbo Ring,” “Turbo Ring V2,” and STP/RSTP protocols on the same
ring. The following table lists the key differences between each feature. Use this information to evaluate the
benefits of each, and then determine which features are most suitable for your network.
Turbo Ring V2 Turbo Ring Turbo Chain STP RSTP
Topology Ring Ring Chain Ring, Mesh Ring, Mesh
Recovery
Time
< 20 ms < 300 ms < 20 ms Up to 30 seconds Up to 5 seconds