Dell S6000 Reference Manual page 637

Command line for the system

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When a port receives traffic at a higher rate than it can process, the frames are

stored in the port buffer. As a result, buffer usage increases. When the buffer usage

reaches the value specified in the "pause-threshold" argument, the port sends

PAUSE frame to the connected link partner to stop sending the traffic. Eventually

this reduces the buffer usage. When the buffer usage drops by the value specified

in the "resume-threshold", the port again sends a PAUSE frame with 0 as wait-time.

This results in resume of the paused traffic flow.

Important Points to Remember

Dell(conf-if-Tegi-0/1)#show config

interface GigabitEthernet 0/1

no ip address

no negotiation auto

flowcontrol rx off tx on

This Example shows how Dell Networking OS negotiates the flow control values

between two Dell Networking chassis connected back-to-back using 1G copper

LocRxConf LocTxConf RemoteRxConf RemoteTxConf

Do not enable tx pause when buffer carving is enabled. For information and

assistance, consult Dell Networking TAC.

The only configuration applicable to half duplex ports is rx off tx off. The

following error is returned:

Can't configure flowcontrol when half duplex is configure,

config ignored

Half duplex cannot be configured when the flow control configuration is on

(default is rx on tx on). The following error is returned:

Can't configure half duplex when flowcontrol is on, config

NOTE: The flow control must be off (rx off tx off) before configuring the

half duplex.

Speeds less than 1 Gig cannot be configured when the asymmetric flow control

configuration is on. The following error is returned:

Can't configure speed <1G when Asymmetric flowcontrol is on,

config ignored

Dell Networking OS only supports rx on tx on and rx off tx off for

speeds less than 1 Gig (Symmetric).

NOTE: If you use the disable rx flow control command, Dell

Networking recommends rebooting the system.