Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 570

www.dell.com | support.dell.com Example • Ends when both the packet pointer and the buffer threshold fall below 50% of the threshold settings. The discard threshold defines when the interface starts dropping the packet on the interface. This may be necessary when a connected device does not honor the flow control frame sent by the S-Series. The discard threshold should be larger than the buffer threshold so that the buffer holds at least hold at least 3 packets. On 4-port 10G line cards: Changes in the flow-control values are not reflected automatically in the show interface output for 10G interfaces. This issue results from the fact that 10G interfaces do not support auto-negotiation per-se. On 1G interfaces, changing the flow control values causes an automatic interface flap, after which PAUSE values are exchanged as part of the auto-negotiation process. As a workaround, apply the new settings, execute shut followed by no shut on the interface, and then check the running-config of the port. Important Points to Remember • Do not enable tx pause when buffer carving is enabled. Consult Dell Force10 TAC for information and assistance. • Asymmetric flow control (rx on tx off or rx off tx on) setting for the interface port less than 100 Mb/s speed is not permitted. The following error is returned: Can't configure Asymmetric flowcontrol when speed