ZyXEL Communications XS3800-28, User Manual, Page: 131 / 789

Chapter 15 Path MTU Table
XS3800-28 User’s Guide
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15.2 DDMI
The optical SFP transceiver’s support for the Digital Diagnostics Monitoring Interface (DDMI) function lets
you monitor the transceiver’s parameters to perform component monitoring, fault isolation and failure
prediction tasks. This allows proactive, preventative network maintenance to help ensure service
continuity.
Use this screen to view the DDMI status of the Switch’s SFP transceivers. Click MONITOR > Port Status >
DDMI to see the following screen. Alternatively, click DASHBOARD from any Web Configurator screen
and then the Port Status link in the Quick Link section of the DASHBOARD screen to display the Port Status
screen and then click the DDMI link tab.
Figure 83 MONITOR > Port Status > DDMI (Standalone Mode)
Error Packet
The following fields display detailed information about packets received that were in error.
RX CRC This field shows the number of packets received with CRC (Cyclic Redundant Check) errors.
Length This field shows the number of packets received with a length that was out of range.
Runt This field shows the number of packets received that were too short (shorter than 64 octets),
including the ones with CRC errors.
Distribution
64 This field shows the number of packets (including bad packets) received that were 64 octets in
length.
65 to 127 This field shows the number of packets (including bad packets) received that were between 65
and 127 octets in length.
128 to 255 This field shows the number of packets (including bad packets) received that were between 128
and 255 octets in length.
256 to 511 This field shows the number of packets (including bad packets) received that were between 256
and 511 octets in length.
512 to
1023
This field shows the number of packets (including bad packets) received that were between 512
and 1023 octets in length.
1024 to
1518
This field shows the number of packets (including bad packets) received that were between 1024
and 1518 octets in length.
Giant This field shows the number of packets (including bad packets) received that were between 1519
octets and the maximum frame size.
The maximum frame size varies depending on your switch model.
Table 31 MONITOR > Port Status > Port Details (continued)
LABEL DESCRIPTION