User guide

18-4 E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
S
TATUS
M
ONITORING AND
S
TATISTICS
•
extended
— Takes the switch fabric and ports offline, and performs extensive ASIC,
ASIC-memory, and packet loopback tests. Extended diagnostic tests take a maximum
of 15 minutes. The CPU is not tested. Console access is available during extended
diagnostics.
•
<slot>
— Specifies the slot number of an I/O module. Once the diagnostics test is
complete, the system attempts to bring the I/O module back online. This parameter
is applicable to the BlackDiamond switch, only.
•
msm-a | msm-b
— Specifies the slot letter of an MSM64i. If the master MSM is
specified, the diagnostic routine is performed when the system reboots. Both switch
fabric and management ports are taken offline during diagnostics. This parameter is
applicable to the BlackDiamond switch, only.
P
ORT
S
TATISTICS
ExtremeWare provides a facility for viewing port statistic information. The summary
information lists values for the current counter against each port on each operational
module in the system, and it is refreshed approximately every 2 seconds. Values are
displayed to nine digits of accuracy.
To view port statistics, use the following command:
show ports <portlist> stats
The following port statistic information is collected by the switch:
• Link Status — The current status of the link. Options are
— Ready (the port is ready to accept a link)
— Active (the link is present at this port)
— Chassis (the link is connected to a Summit Virtual Chassis)
• Transmitted Packet Count (Tx Pkt Count) — The number of packets that have been
successfully transmitted by the port.
• Transmitted Byte Count (Tx Byte Count) — The total number of data bytes
successfully transmitted by the port.
• Received Packet Count (Rx Pkt Count) — The total number of good packets that
have been received by the port.
• Received Byte Count (RX Byte Count) — The total number of bytes that were
received by the port, including bad or lost frames. This number includes bytes
contained in the Frame Check Sequence (FCS), but excludes bytes in the preamble.