User`s manual

PT-G7509 User’s Manual Featured Functions
3-22
2nd Trap Server IP/Name
Setting Description Factory Default
IP or name
Specifies the IP address or name of the
secondary trap server used by your
network.
None
2nd Trap Community
Setting Description Factory Default
Max. 30 characters
Specifies the community string to use for
authentication.
Public
Trap Mode
Setting Description Factory Default
Trap
Select this option to use SNMP Trap message to
indicate event occurrence.
Trap
Inform
Select this option to use SNMP Inform message
to indicate event occurrence. SNMPv2 provides
an inform mechanism. When an inform message
is sent from the SNMP agent to the NMS
(network management system), the receiver
sends a response to the sender acknowledging
receipt of the event. This behavior is similar to
that of the get and set requests.
Trap
Private MIB information
Switch Object ID
Setting Description Factory Default
8691.7.32
This indicates the PT-G7509’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-G7509 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-G7509 supports four different protocols for
communication redundancy—Rapid Spanning Tree Protocol (IEEE-802.1w) and Turbo Ring,
Turbo Ring V2, and Turbo Chain.
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.