Extreme Networks EPICenter 4.1, Руководство по установке программного обеспечения, Страница: 368 / 546

368 EPICenter Software Installation and User Guide
Administering EPICenter
• Timeout Period : The length of time, in seconds, to wait for an SNMP poll request to complete, in
milliseconds, before timing out. The default is two seconds. The range is one to 10 seconds.
This setting determines the time-out interval only for the first unsuccessful SNMP request; once a
request times out, subsequent requests will time out more slowly, based on an exponential time-out
back-off algorithm, until it reaches the maximum number of retries.
• Number of Retries : The number of SNMP requests that should be attempted before giving up, for a
request that has timed out. The default is one.
• EPICenter Trap Receiver Port : The port on which EPICenter expects to receive traps. Default is port
10550.
• Enable Edge Port Polling (checkbox): A check in this box indicates that edge port polling is enabled.
Edge port polling is a background process the polls all ports identified as edge ports for a variety of
information including FDB information, IP and MAC addresses, port status and port names. Edge
ports are identified automatically and are distinguished from uplink ports based on the number of
MAC addresses detected on the port (a port with five or fewer MAC addresses is considered an
edge port). The default is enabled.
• Poll Edge Ports Fast (checkbox): A check in this box speeds up the request for edge port device
information. Using this option may cause a performance impact. To help mitigate this effect, you can
limit the size of the downloaded FDB table using the Edge Port Maximum Table Size Setting. The
default is not enabled.
• Edge Port Poll Interval (hours) : The minimum interval (in hours) between polls of an individual
edge port. The longer the interval, the less performance overhead the EPICenter server will endure
due to edge port polling, but the longer port information will go without being refreshed. The
default is 12 hours. If you set an interval that is shorter than the time it takes to poll all the edge
ports, then the actual interval may be longer than the interval you specify here.
• Edge Port Maximum Table Size Setting : Specifies the maximum size of the FDB table downloaded
by EPICenter. The default value is 1000 entries. The range is between 0 and 100000 entries, where 0
indicates that there is no maximum size. If the number of entries of the edge port FDB table exceeds
the specified maximum, no further entries from the device are downloaded.
Topology Properties
Select Topology from the drop-down menu field at the top of the properties panel to set properties that
affect the collection and display of RMON statistics in the Topology applet.
• Enable Topology RMON Statistics Data Collection (checkbox): A check in this box enables the
collection of RMON statistics in the Topology applet. The default is enabled, which means that
RMON statistics will be collected for all devices that have RMON enabled in the device. To disable
the collection of RMON Statistics, uncheck the checkbox. If this option is disabled, then no RMON
statistics will be displayed on any maps, regardless of the setting of the Display RMON Statistics
• Display RMON Statistics in new Maps by Default (checkbox): The display of RMON statistics on a
map can be enabled or disabled for individual maps through a checkbox option in the Topology
Map Properties window for each map. This server property specifies the default state of the RMON
statistics display checkbox (labeled RMON Statistics) in the Topology Map Properties window.
A check in this box specifies that by default the RMON Statistics option in the Map Properties
window will be enabled. Thus, by default, RMON statistics will be displayed for all maps unless
they are specifically disabled for an individual map. To disable the RMON statistics display for an
individual map, you can uncheck the RMON Statistics option in the Map Properties window for that
map.
This option is disabled by default, meaning that the corresponding option in the Map Properties will
be disabled by default.