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MARTNA™ 10G NETWORK ACCESS (SMARTNA-X)
COMMAND LINE INTERFACE REFERENCE |
DRAFT
SET PORT DUPLEX
Use the set port duplex command to configure duplex of the specified port (A–D) of the currently selected TAP
module. In general, you should leave the port set to Auto to auto-negotiate duplex with the link partner. Half-
duplex on both ends should be used if not using auto-negotiation, as explained below.
SmartNA-X ports always use auto-negotiation of duplexing, even when set to full- or half-duplex, and will default
to half-duplexing if the link partner isn't set to auto-duplex. This behavior is specified by IEEE802.3-2008 Section
3: 37.1.4.4 and allows for connection to legacy devices supporting half-duplex only. Thus, if the link partner is set
as full-duplex (not auto) and the SmartNA-X port is set as full-duplex, the SmartNA-X port will revert to half-
duplex, resulting in a duplex mismatch. A duplex mismatch will significantly slow down data throughput between
the link partners. To prevent a duplex mismatch, set all communicating ports to either auto- or half-duplex mode.
Command form set port port-id duplex {
Auto | Full | Half}
Examples
• Set port 4C to auto duplex:
port-id Specifies the port to set. Front ports are labelled A to D, left to right, and rear ports
are labelled A and B. Only one port can be set at a time.
Auto | Full | Half Sets the port duplex to auto negotiate, full or half duplex. Use Auto (the default) to
let the system auto-negotiate the optimum duplex setting with the link partner. If
not using auto-negotiation, set both ends to half-duplex to avoid a duplex
mismatching (full-duplex should not be used as this may result in a duplex
mismatch).
CONTROLLER>select slot 4
SLOT4>set port C duplex auto
SLOT4>show port C
speed : set 1G
duplex : set auto actual full
mdi : set mdi-x
mastering : set preferslave
tap : off
autolock : off
lock : off
usage : undefined
port type : Registered Jack 45 (RJ45)
PORT DOWN
traffic threshold low : 10
traffic threshold high: 100
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