Introduction RMON History Collection
Software Reference for SwitchBlade x3100 Series Switches (Network Management)
7-96
• Management log produced when falling threshold occurs:
RMON004 2004-06-16 13:34:54 6080 INFO
Location : ETH:6.0
Description: etherStatsBroadcastPkts Falling Alert
Type : Absolute
Threshold : 10
Value : 0
Note: Refer to the Allied Telesis Log / Troubleshooting Manual for descriptions of log messages.
7.5.4 RMON History Collection
Performance management also involves collecting historical data. These statistics are organized by intervals
and buckets for a single interface or set of interfaces:
• Interval - the number of seconds in which the bucket gathers the statistics until the next bucket begins col-
lecting data
• Bucket - the container or collection of the historical data
Note: The interface(s) must be enabled to collect data.
The total amount of data collected depends on the size of the intervals and the number of buckets configured.
As shown in Figure 7-14, when bucket 1 is full (a bucket being full when the interval has occurred), it becomes
bucket 2, and the new bucket 1 contains the most recent historical data. When the last bucket (in this case
bucket 4) is full and new data arrives, the data in bucket 3 becomes bucket 4, and the data that was in bucket 4
is discarded.
Note: Buckets are a system-wide resource. For RMON data, the maximum number of buckets that can be
configured for an SBx3112 is 2700. If the user tries to add a history that will go over the 2700 limit,
the system will allocate what is available and produce a message saying how many buckets were
granted.
To Next Page
Loading...
Need help?
General
