H3C S7500E-XS Series Interface Configuration Manual

Also see for S7500E-XS Series: Evb configuration guide Installation guide Faq Command reference Command reference

H3C S7500E-XS Series Interface Configuration Manual Manual pdf 19 page image

12Forcibly bringing up a fiber portCAUTION:The following operations on a fiber port will cause link-down and link-up events before the portfinally stays up:• Configure both the port up-mode command and the speed or duplex command.• Install or remove fibers or transceiver modules after you forcibly bring up the fiber port.As shown in Figure 1, a fiber port uses separate fibers for transmitting and receiving packets. Thephysical state of the fiber port is up only when both transmit and receive fibers are physicallyconnected. If one of the fibers is disconnected, the fiber port does not work.To enable a fiber port to forward traffic over a single link, you can use the port up-mode command.This command forcibly brings up a fiber port, even when no fiber links or transceiver modules arepresent for the fiber port. When one fiber link is present and up, the fiber port can forward packetsover the link unidirectionally.Figure 1 Forcibly bring up a fiber portConfiguration procedureTo forcibly bring up a fiber port:Step Command Remarks1. Enter system view. system-view N/ACorrect fiberconnectionWhen Ethernetinterfaces cannotbe or are notforcibly brought upWhen Ethernet interfacesare forcibly brought upFiber port Tx end Rx end The fiber isdisconnected.Fiber linkXGE1/1/1XGE1/1/1Device ADevice BXGE1/1/1XGE1/1/1Device ADevice BXGE1/1/1XGE1/1/1Device ADevice BThe interface isdown.Packets