H3C SR6600 Command Reference Manual

Also see for SR6600 SPE-FWM: Configuration guide Configuration guide Configuration guide Command reference Command reference

1-14Parametersdelay-time: Sets the physical state change suppression interval (in seconds) on the Ethernet interface.The value range is 0 to 10.DescriptionUse the link-delay command to set the physical state change suppression interval on an Ethernetinterface.Use the undo link-delay command to disable physical state change suppression.By default, physical state change suppression is disabled on Ethernet interfaces.Examples# Enable physical state change suppression on GigabitEthernet 4/0/1, setting the suppression intervalto 8 seconds. system-view[Sysname] interface gigabitethernet 4/0/1[Sysname-GigabitEthernet4/0/1] link-delay 8loopbackSyntaxloopback { external | internal }undo loopbackViewEthernet interface viewDefault Level2: System levelParametersexternal: Enables external loopback testing to test all on-chip functions related to Ethernet interfaces.internal: Enables internal loopback testing to test the hardware of Ethernet interfaces.DescriptionUse the loopback command to enable loopback testing on an Ethernet interface.Use the undo loopback command to disable loopback testing on an Ethernet interface.By default, loopback testing is disabled on Ethernet interfaces.z You enable loopback testing for troubleshooting purposes, such as identifying an Ethernetproblem.z During loopback testing, the port is operating in full duplex mode, regardless of its duplexconfiguration. After loopback testing is disabled, the duplex configuration of the port restores.