HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 2 - LAN Switching Co - Page 15
Configuring link-down event suppression, Configuring loopback testing on an Ethernet interface
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event, and the display interface brief or display interface command displays the interface state as UP. If the physical link is still down when the timer expires, the interface reports the link-down event to the upper layers. Link-up event suppression enables an interface to suppress link-up events and start a delay timer each time the physical link goes up. During this delay, the interface does not report the link-up event, and the display interface brief or display interface command displays the interface state as DOWN. If the physical link is still up when the timer expires, the interface reports the link-up event to the upper layers. Configuring link-down event suppression To enable an Ethernet interface to suppress link-down events: Step 1. Enter system view. 2. Enter Ethernet interface view. 3. Set a link-down event suppression interval. Command system-view interface interface-type interface-number link-delay delay-time Remarks N/A N/A Link-down event suppression is disabled by default. Configuring link-up event suppression To configure link-up event suppression on an Ethernet interface: Step 1. Enter system view. 2. Enter Ethernet interface view. 3. Set a link-up event suppression interval. Command Remarks system-view N/A interface interface-type interface-number N/A link-delay delay-time mode up Link-up event suppression is disabled by default. NOTE: The link-delay mode up command and the link-delay command supersedes each other, and whichever is configured last takes effect. Configuring loopback testing on an Ethernet interface If an Ethernet interface does not work normally, you can enable loopback testing on it to identify the problem. Loopback testing has the following types: • Internal loopback testing-Tests all on-chip functions related to Ethernet interfaces. • External loopback testing-Also called "remote loopback testing." an interface in this mode returns a received packet back to the packet sender. This function identifies link failures between network devices. An Ethernet interface in a loopback test does not forward data traffic. 6