Administrator Guide

● If unevenness is observed over three consecutive measurements, an alarm event is generated. The rateInterval for Hg stats
polling (default 15 seconds) determines the time interval between two measurements. Alarm clear is sent when evenness is
observed for three successive rate intervals. If individual link utilization information is not available for a given timestamp, link
bundle utilization is not calculated at that timestamp. The previous known record shall be used for the alarm calculation.
● Turning on and off the link bundle monitoring is performed at a high-Gigabit Ethernet port-channel level configuration.
● The difference of utilization % between the high-used link and low-used link is used to determine the alarm condition. The
alarm trigger reporting is based on the same algorithm used for link bundle monitoring on LAG/ECMP. The alarm reporting is
triggered when the configured threshold has crossed for a given bundle. Now, if the delta utilization is beyond 10%, an alarm
is raised. The alarm condition remains active until all interface utilizations are within the band or until the overall utilization
goes below the trigger threshold. An alarm is not raised or cleared instantaneously
Enabling the Verification of Member Links Utilization
in a High-Gigabit Port Channel
This procedure is supported on the Z9000 platform.
To examine the working efficiency of the high-Gigabit Ethernet port channel interfaces, perform the following steps:
1. Use the hg-link-bundle-monitor slot slotId npuUnit npuUnitId hg-port-channel portChannelId
enable command in Global Configuration mode to enable this functionality to detect the working efficiency of the high-
Gigabit port channel bundle interfaces.
CONFIGURATION mode
Dell(conf)#hg-link-bundle-monitor slot 0 npuUnit 0 hg-port-channel 0 enable
2. Specify the trigger threshold for higig link bundle monitoring.
CONFIGURATION mode
Dell(conf)#hg-link-bundle-monitor trigger-threshold 30
3. Specify the interval in seconds for higig link bundle monitoring.
CONFIGURATION mode
Dell(conf)#hg-link-bundle-monitor rate-interval 10
4. Enable the generation of traps for higig link-bundle monitoring.
CONFIGURATION mode
Dell(conf)#snmp-server enable traps hg-lbm
5. Use the show hg-link-bundle-distribution command to display the traffic-handling and utilization of the member
interfaces of the port channel. The following table describes the output fields of this show command.
EXEC, EXEC Privilege modes
Dell#show hg-link-bundle-distribution 0 npuUnit 5 hg-port-channel 0
Viewing Buffer Utilization and Queue Statistics on
High-Gigabit Ethernet Backplane Ports
This functionality is supported on the Z9000 platform.
You can now view the queue statistics and buffer utilization counters for the internal leaf port and spine port queues using
the appropriate show commands. Transmit and receive counters and drop counters per queue are computed and displayed for
internal queues on high-Gigabit Ethernet ports in the leaf and spine nodes. Buffer utilization counters supported for front-end
ports are extended to high-Gigabit backplane ports.
Buffer counters include a new metric or parameter called Total Count cells. This field contains the total number of cells currently
being used by all queues on all ports in a port pipe. The f10-bp-stats.mib is for statistics collection of backplane ports. Valid
backplane ports for leaf NPU units range from 34-41 and for spine NPU units, they range from 1-16. In a Card Type (slot), NPUT
units are always indexed starting with the leaf NPU units, and then proceeding to the spine NPU units.
In an NPU unit, the port numbering of backplane local ports starts from the end of the last front-end local port ID used.
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Link Aggregation Control Protocol (LACP)