CRMFE100 Fast Ethernet Twisted Pair to Fiber Media Converter with Bandwidth Allocation and Remote Management
Note: All MIB variables that begin with “
crmfe100Rmt” (with the exception of
crmfe100RmtDetected(24)) are configuration controls or status indicators for the SRMFExxx or CRMFE100 media converter at the remote end of the fiber. If no compatible remote media converter is detected, these variables return the read-only value “
|Parameter||Associated MIB variable||Description|
|BIA||See BIA and Slot|
|Slot||See BIA and Slot|
|Group Membership||See Configuration Management|
|Marketing Revision||Marketing Revision|
|Config Match||Configuration Management match?|
|Serial Number||Serial Number reported by hardware|
|Fiber Connector||Connector Type for Twisted Pair port|
|Copper Connector||Connector Type for Fiber port|
|TP Link||Link status of Twisted Pair Port|
|Fiber Link||Link status of Fiber Port|
|Link Passthrough||Link Passthrough|
|Auto Cross||Auto Cross|
|Twisted Pair Activity||Twisted Pair Activity. Some versions of the CRMFE100 do not support the reporting of interface activity. The value of this variable for such a device will be|
|Fiber Activity||Fiber Activity. Some versions of the CRMFE100 do not support the reporting of interface activity. The value of this variable for such a device will be |
|Configuration Mode||Configuration Mode|
|Far End Fault||Far End Fault Configuration.|
|Network Mode||Read-only indicator for High Speed Token Ring jumper configuration. If the variable reads |
|Uptime||Time since the last reboot in Time Ticks (hundredths of seconds). If the value 0 is written to this variable, the timer is reset. No other write value is accepted.|
|Firmware Revision||Firmware Revision of the converter|
|Remote Detected||This variable has the value |
|Remote Loopback||When Remote Loopback is enabled, all packets sent out from the local fiber interface are reflected back by the remote converter rather than being passed out through the remote twisted pair interface, and all packets received on the remote Twisted Pair interface are discarded.|
|Bandwidth Allocation||These variables can be used to limit the traffic flowing through the converter by specifying a maximum data rate in Kilobytes per second or Megabits per second.|
Data traffic is measured from the beginning of each second. Once the traffic reaches the cap specified by these variables, all traffic is discarded until the start of the next second, when the counters are reset and traffic begins to flow again.
There are four bandwidth allocation control variables, two for each direction of data flow.
The difference between the two variables for a given direction is that one is expressed in Kilobytes per second and the other is expressed in Megabits per second. Both control the same underlying hardware resource, which means that changing one will result in a corresponding change to the other.
The values for
For the finest control over data rate, use the KBps variables, which have 191 possible values versus 100 possible values for Mbps.
|Data Received (bytes)||These variables measure the traffic (in Bytes) received by the two interfaces of the converter (and therefore transmitted by the opposite interface). “Tx” refers to data received by the Twisted Pair interface (and transmitted on the Fiber interface), and “Fx” refers to data received on the Fiber interface (and transmitted on the Twisted Pair interface).|
In order to limit each variable to the 32-bit maximum commonly supported in the SNMP world, these 64-bit counters are split into a high-order and low-order 32-bit sections. Transition Networks’ applications generally treat the High order portion of the counter as a counter of the number of times the Low order section has wrapped to 0. To reconstruct the original 64-bit value, multiply the “High” section by 2^32 and add the “Low” section.
If you write the value 0 to any of these four variables, all four are reset to zero.
|Management Subchannel (bytes)||These variables measure the traffic (in Bytes) received and transmitted by the Management Subchannel within the Fiber interface. “Management Subchannel” refers to the transfer of management data to and from the Remote SRMFExxx in the inter-packet gaps normally found in Ethernet traffic. This allows management data to be transferred with no reduction in the bandwidth available for normal network traffic.|
If you write the value 0 to either of these two variables, both are reset to zero.
|Cache Clean||Configuration changes pending?|
|FPGA Revision||The revision level of the code in the Field-Programmable Gate Array installed in the local and remote adapters, respectively. When the value of|