Enabling The Verification Of Member Links Utilization In A High-Gigabit Port Channel; Viewing Buffer Utilization And Queue Statistics On High-Gigabit Ethernet Backplane Ports - Dell Force10 Z9000 Configuration Manual

• The rate interval for polling the traffic statistics for member links of the high-Gigabit port channel must be configured. The
default hiGig stats polling interval is 15 seconds. This interval cannot be configured per high-Gigabit port channel and is applicable
for all of the high-Gigabit port channels on the system.
• The threshold value identifies when to start the link bundle utilization calculation trigger (default of 60 percent). When overall
utilization (mean) is below this value, link bundle distribution unevenness is not reported.
• 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
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Link Aggregation Control Protocol (LACP)