Dell PowerEdge FX2 Dell PowerEdge FN I/O Aggregator Command Line Reference Gui - Page 135
Port Channel Commands, Time Domain Reflectometer (TDR) Commands, Virtual LAN (VLAN) Commands
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Port Channel Commands A Link Aggregation Group (LAG) is a group of links that appear to a MAC client as if they were a single link according to IEEE 802.3ad. In Dell Networking OS, a LAG is referred to as a Port Channel. • For the Aggregator, the maximum port channel ID is 128 and the maximum members per port channel is 4. Because each port can be assigned to only one Port Channel, and each Port Channel must have at least one port, some of those nominally available Port Channels might have no function because they could have no members if there are not enough ports installed. NOTE: For information about Dell Networking OS link aggregation control protocol (LACP) for dynamic LAGs, refer to the Link Aggregation Control Protocol (LACP) chapter. For more information about configuring and using Port Channels, refer to the Dell PowerEdge FN 410S I/O Aggregator Configuration Guide Time Domain Reflectometer (TDR) Commands TDR is useful for troubleshooting an interface that is not establishing a link; either it is flapping or not coming up at all. TDR detects open or short conditions of copper cables on 100/1000/10G Base-T modules. • tdr-cable-test • show tdr Important Points to Remember • The interface and port must be enabled (configured-see the interface command) before running TDR. An error message is generated if you have not enabled the interface. • The interface on the far-end device must be shut down before running TDR. • Because TDR is an intrusive test on an interface that is not establishing a link, do not run TDR on an interface that is passing traffic. • When testing between two devices, do not run the test on both ends of the cable. Virtual LAN (VLAN) Commands The following commands configure and monitor virtual local area networks (VLANs). VLANs are a virtual interface and use many of the same commands as physical interfaces. You can configure an IP address only on the default VLAN. FTP, TFTP, ACLs, and SNMP are not supported on a VLAN. Occasionally, while sending broadcast traffic over multiple VLANs, state of a VLAN interface may continually switch between Master and Backup. • auto vlan • default vlan-id 135