Description: When a repeater detects a collision on any of the ports to which it is transmitting, it transmits a jam signal to all of the ports to which it is connected. This object specifies the minimum amount of time a repeater transmits a jam signal after it detects a collision. See the IEEE 802.3 standard for more details regarding collision detection and handling.

Setting this object to jb96(1) causes the repeater to transmit jam for at least 96 bit times after it detects a collision. This setting complies with the IEEE 802.3 standard specification for the minimum jam time.

Setting this object to jb128(1) causes the repeater to transmit jam for at least 128 bits times after it detects a collision. Some repeaters, designed prior to the development of the IEEE 802.3 specification, jam for a minimum of 128 bit times after they detect collisions. It may be desirable for all the repeaters on the LAN to perform the same collision handling function. This setting provides a backwards compatibility mode when older repeaters are present in the network.

Some implementations may not support setting this object to all defined enumerated values. A badValue error is returned if an attempt is made to set this object to an unsupported value.

Note: If an implementation supports multiple minimum jam time settings, the default value for this object is jb96(1).

Note: The state of this object is preserved when the repeater undergoes a power-up reset.