User guide

Chapter 4 Managing Ports 107
Port Statistics Data Window
The Port Statistics data window (FIGURE 4-3) displays statistics about port
performance. To open the Port Statistics data window, select one or more ports and
click the Port Stats data window tab.
Upstream ISL The ISL over which the switch sends requests
intended for the principal switch
Downstream ISL The ISL over which the switch has received
requests intended for the principal switch.
Extended Credits Group
Extended Credits Requested Number of requested credits
Max Credits Available The maximum number of credits granted to a
port that can be used when extending port
credits.
Credits to Donate The number of credits available to be donated
by the selected port.
Donor Group The donor group of the selected port.
Valid Donor Groups The number of separate groups within which
extended credits may be donated and
assigned.
Media Group
Media Type The transceiver fibre type, such as single
mode, multi-mode, copper.
Media Speed The maximum transceiver speed
Media The transceiver type. XPAK ports always
display "unknown", if attached.
Media Transmitter The transceiver transmitter type, such as
longwave, shortwave, electrical.
Media Distance The maximum transceiver transmission
distance
Media Vendor The company that manufactured the SFP
Media Vendor ID The IEEE registered company ID
Media Part Number The part number assigned to the SFP
Media Revision Transceiver hardware version
TABLE 4-1 Port Information Data Window Entries (Continued)
Entry Description