3.1.1 UTP Configuration
<< UTP Status and Configuration >>
<1> Port Active [ Enable ] Link [ Link Up ]
<2> Negotiation [ Auto ]
<3> Speed [ 100 ] Status [ 100 ]
<4> Duplex [ Full ] Status [ Full ]
<5> Flow Control[ Enable ]
<6> Egress Limit [ Disable ]
<7> Ingress Limit [ Disable ]
The UTP Port Active is enabled by default. If the port is disabled, all transmission through this port will be stopped. 100M’s LAN Link LED
will be extinguished, however any connected device will still detect an Ethernet link.
The UTP port supports auto-negotiation per IEEE802.3u as well as manual forced mode setting of Speed (10/100) and Duplex (Half/Full).
In 802.3u, speed can be auto detected, however the Duplex mode MUST be negotiated. When an 802.3u compliant device is configured in
auto negotiation mode, failure to negotiate Duplex (for example, if connected to legacy equipment or to equipment configured in forced mode)
will result in the Auto device assuming a Half-Duplex operating mode. Do not connect forced Full mode Ethernet ports to an auto device as
this will result in a Duplex-Mismatch.
Ethernet Flow Control (IEEE802.3X) is a mechanism for temporarily stopping the transmission of data on Ethernet family computer
networks. It can work in conjunction with rate limiting to avoid dropped packets from TCP. Flow control should also be used with care and with
full knowledge of its effect when used to pause traffic coming from a switch.
The rate limiting is adjustable for both ingress (packets received into the TP port) and egress (packets transmitted from the TP port) in
granularity of 64k. By default, rate limiting is disabled. Once enabled, the rate limit can be set in nx64k rates where n=1 to 1600. Entering an
“n” value of zero (0) will again disable the rate limiting.
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