Dell Force10 S25-01-GE-24V FTOS 8.4.2.7 Command Line Reference Guide for E-Ser - Page 569

Usage Information This command applies to any physical interface with speed set to 10/100. Note: Starting with FTOS 7.8.1.0, when a copper SFP2 module with catalog number GP-SFP2-1T is used in the S25P model of the S-Series, its speed can be manually set with the speed command. When the speed is set to 10 or 100 Mbps, the duplex command can also be executed. Related Commands speed (for 10/100/1000 interfaces) negotiation auto Set the speed on the Base-T Ethernet interface. Enable or disable auto-negotiation on an interface. flowcontrol c e s Control how the system responds to and generates 802.3x pause frames on 1Gig and 10Gig line cards. Syntax flowcontrol rx {off | on} tx {off | on} threshold { } The threshold keyword is supported on C-Series and S-Series only. Parameters rx on rx off tx on tx off threshold (C-Series and S-Series only) Enter the keywords rx on to process the received flow control frames on this port. This is the default value for the receive side. Enter the keywords rx off to ignore the received flow control frames on this port. Enter the keywords tx on to send control frames from this port to the connected device when a higher rate of traffic is received. This is the default value on the send side. Enter the keywords tx off so that flow control frames are not sent from this port to the connected device when a higher rate of traffic is received. When tx on is configured, you can set the threshold values for: Number of flow-control packet pointers: 1-2047 (default = 75) Flow-control buffer threshold in KB: 1-2013 (default = 49KB) Flow-control discard threshold in KB: 1-2013 (default= 75KB) Defaults C-Series: rx off tx off E-Series: rx on tx on S-Series: rx off tx off Command Modes INTERFACE Command History Version 8.1.1.0 Version 6.5.1.9 and 7.4.1.0 Version 7.8.1.0 Introduced on E-Series ExaScale Introduced on E-Series Introduced on C-Series and S-Series with thresholds Usage Information The globally assigned 48-bit Multicast address 01-80-C2-00-00-01 is used to send and receive pause frames. To allow full duplex flow control, stations implementing the pause operation instruct the MAC to enable reception of frames with a destination address equal to this multicast address. The pause: • Starts when either the packet pointer or the buffer threshold is met (whichever is met first). When the discard threshold is met, packets are dropped. Interfaces | 569