Polling Types And Frequencies; Snmp Polling; Mac Address Polling - Extreme Networks Ridgeline Guide Manual

Tuning and Debugging Ridgeline
To disable Ridgeline management for a device, select the device in a Network Views window, and
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select Managing > Disable from the Device menu. Note that this does not physically change the
device; it just sets Ridgeline to ignore the device as if it were offline.
To re-enable Ridgeline management for the device when it is again reachable, select it, and select
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Managing > Enable from the Device menu.
For devices that simply take a long time to sync or to poll on a Detail poll cycle, you can reduce the
impact by reducing the Detail Poll frequency (lengthening the time between polls) for those devices.
The default Detail polling frequency is 30 minutes for core devices and 90 minutes for edge devices.

Polling Types and Frequencies

When you log in to Ridgeline, it by default attempts to sync all the devices it is managing, to bring its
database up to date. For devices that are down (and not marked offline in Ridgeline) Ridgeline will
attempt to sync the device and will have to wait until the device times out. Further, a sync does a Detail
Poll, so a large network with many devices with very complex configurations (for example, a large
number of VLANs) the sync operation can take a significant amount of time.
Ridgeline does several types of polling, using SNMP or Telnet, for the information it needs.

SNMP Polling

Ridgeline does two types of polls for device information using SNMP.
A global "heartbeat" poll that gets basic information about device reachability. The poll frequency
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for this is 5 minutes, for all devices regardless of type.
A device-specific Detail poll, that polls for more detailed information about the device configuration,
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such as software version, BootROM version, VLANs configured on the device, and so on. This poll
can take much longer to complete, so this type of polling is done less frequently, and is configurable
on each device individually in Ridgeline. The default poll interval for this type of polling is every 60
minutes for core (chassis) devices and every 90 minutes for edge devices.
The global poll frequency can be changed through the Ridgeline Administration, under the SNMP
Server Properties. Any changes will affect all devices in the Ridgeline database. You can also change the
timeout and number of retries.
Increasing the global SNMP polling interval can reduce the load on your server and your network, at
the expense of the timeliness of device state information.
The Detail Device Poll interval can be changed in the Modify Communications Settings window (or in
the Add Devices dialog). Changes here affect only the devices selected for modification.

MAC Address Polling

Ridgeline provides an option for doing Telnet-based polling of switch FDBs to gather MAC address
information about edge ports. This feature is disabled by default. If enabled, its frequency can be
modified to reduce the load on the overall system and the network.
MAC address polling is enabled or disabled globally through the MAC Polling Server Properties in
Ridgeline Administration. If enabled, MAC address polling can then be enabled on a per-device basis.
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Ridgeline Concepts and Solutions Guide