Administrator Guide

Table Of Contents
Figure 54. Inspecting the LAG Status Using the show lacp command
The point-to-point protocol (PPP) is a connection-oriented protocol that enables layer two links over various different physical
layer connections. It is supported on both synchronous and asynchronous lines, and can operate in Half-Duplex or Full-Duplex
mode. It was designed to carry IP traffic but is general enough to allow any type of network layer datagram to be sent over a
PPP connection. As its name implies, it is for point-to-point connections between exactly two devices, and assumes that frames
are sent and received in the same order.
Setting Up a Threshold for Utilization of High-Gigabit
Port Channels
This functionality is supported on the Z9000 platform.
You can monitor a backplane high-Gigabit Ethernet port channel and generate a system logging message or an SNMP trap when
the traffic distribution and the handled data packets on the bundle are uneven or inconsistent. The formula or the computation
parameter to determine the uneven or the unequal distribution of traffic is predefined. Also, when the traffic handling becomes
consistent, alarms and SNMP traps are generated.
The Dell Networking OS already contains the functionality to monitor the performance and traffic handling of virtual interfaces
created as LAG bundles and ECMP configured on physical user ports. You can now verify the traffic distribution and processing
of high-Gigabit Ethernet port channels. Trunk groups for backplane hiGig link bundles between the leaf and spines are created.
To provision trunk groups on Z9000 platforms, one trunk group (hiGig link bundle) on each leaf unit is created and four trunk
groups on each spine unit are created. A total of 12 trunk groups are present on the two spines and four leafs of the Z9000
platform.
Based on the specified hashing algorithm, traffic in the trunk groups is distributed. It is possible that an unequal or imbalanced
traffic distribution in hiGig trunk groups may occur. When you configure the method to monitor the high-Gigabit Ethernet port
channel and trunk groups, you can view and analyze the unequal traffic split and flow in the trunk groups and take corrective
action.
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Link Aggregation Control Protocol (LACP)