Administrator Guide

no shutdown
link-bundle-monitor enable
To view the links that are being monitored, use the show link-bundle-distribution command.
Dell(conf-if-po-111)#do show link-bundle-distribution
Link-bundle trigger threshold - 22
LAG bundle - 111 Utilization[In Percent] - 25 Alarm State - Active
Interface Line Protocol Utilization[In Percent]
PeGi 255/1/36 Up 25
PeGi 255/1/37 Up 25
PeGi 255/2/38 Up 25
PeGi 255/2/39 Up 50
PeGi 255/3/40 Up 0
PeGi 255/3/45 Up 25
Monitoring HiGig Link Bundles
You can monitor the HiGig link bundles that transmit data between internal backplane ports on line-card (leaf) and switch fabric
module (SFM - spine) network processing units (NPUs) and generate a system log message or SNMP trap when traffic
distribution in a link bundle is uneven. Each NPU is a Trident chip.
On the switch, backplane port channels operate as HiGig link bundles to transmit data traffic between line-card and SFM NPUs.
There are 11 line-card and 2 SFM NPUs. The two SFM (spine) NPUs include the switch fabric module.
Each line-card use one NPU numbered 0. SFM NPUs are numbered 0 to 1.
Line-card and SFM NPUs use HiGig link bundles to transmit data.
● An SFM (spine) NPU uses 10 HiGig link bundles, one link bundle to transmit data to each line-card (leaf) NPU. Each HiGig
link bundle in an SFM NPU consists of three HiGig links.
● A line-card (leaf) NPU supports 24 front-end I/O ports and 6 backplane HiGig ports. The six backplane links are members of
2 HiGig link bundles that connect the line-card NPU to each SFM (spine) NPU. Three HiGig links in the bundle are used to
connect to each SFM NPU
You can enable the capability to detect uneven traffic distribution in the member links of a HiGig link bundle on a line-card or
SFM NPU. You can also enable a notification to be sent using alarms and SNMP traps. The algorithm used to determine uneven
distribution of traffic is predefined.
Monitoring HiGig link bundles allows you to view and analyze unequal traffic flow in backplane port channels and take corrective
action. Alarms are generated if the link-bundle traffic threshold is greater than the configured threshold and the unevenness is
greater than 10 percent between links for three successive rate-intervals. Alarms are removed when the link-bundle threshold is
lower than the configured threshold and the unevenness is less than 10 percent between links for three successive rate
intervals.
An alarm includes the following information:
● Line-card or SFM NPU unit and HiGig port-channel ID in the format: hg-port-channel slot slot/npu-id/hg-port
—channel-id
● Alarm: triggered or cleared
Examples of the system log messages triggered when the threshold for a HiGig link bundle/port channel is exceeded are:
● %STKUNIT0-M:CP %SWMGR-5-HG-BUNDLE_UNEVEN_DISTRIBUTION: Found uneven distribution in hg-port-
channel 0/5/0
● %STKUNIT0-M:CP %SWMGR-5-HG-BUNDLE_UNEVEN_DISTRIBUTION_ALARM_CLEAR: Uneven distribution in
hg-port-channel 0/5/0 got cleared
Guidelines for Monitoring HiGig Link-Bundles
When configuring HiGig link-bundle monitoring on the backplane, follow these guidelines:
● By default, the capability to monitor the traffic distribution in a HiGig link bundle on a line-card or SFM NPU is disabled.
438
Interfaces