Cabletron Systems CSX1000 - Manual (Page 530)

USER’S GUIDE
530 CyberSWITCH
B
RIDGE
C
OMMANDS
The following commands are used to display bridging information and statistics.
pkt mac
Enables the MAC address monitor display. The MAC Address Monitor screen displays
information contained in the LAN frames that are sent over the ISDN connections. The packets
represented by the displayed MAC address pairs will not be captured unless the br pkt capture
feature is on (enabled).
When the MAC Address monitor is enabled, the CyberSWITCH inspects each LAN frame sent
or received over the ISDN connections. It displays the Destination MAC Address, Source MAC
Address, and Ethernet type field for each LAN frame.
In the above example, the DEST field is the destination MAC address field of the LAN frame.
The SOURCE field is the source MAC address of the LAN frame. Next to the source MAC
address field is the location of that source address. An “L” next to the source address indicates
that this address is “Local” to the CyberSWITCH. That is, it is attached to the Ethernet segment
locally connected to the CyberSWITCH. An “R” next to the source address indicates that this
address is “Remote” to the CyberSWITCH. That is, it is attached to an Ethernet segment that is
connected to a remote ISDN device.
The TYPE field is Ethernet type field of the LAN frame. This hexadecimal field represents the
protocol identifier for an Ethernet formatted frame. For an 802.3 formatted frame, it is the
length of the data unit.
The COUNT field is the number of frames transferred for that destination address, source
address, and Ethernet type combination. The total number of frames is displayed at the bottom
of the screen.
To exit the MAC Address Monitor screen and disable the feature, press on the
Administration console keyboard.
br stats
Displays the current system packet statistics. Refer to Bridge Statistics , for a list of available
bridge statistics and their definitions.
br stats clear
Clears the current system packet statistics.
MAC Address Monitor
DEST SOURCE TYPE COUNT DEST SOURCE TYPE COUNT
90409A000000 00409A001023-L 3C09 00010 00409A001023 00409A001324-R 3C09 00140
00409A001324 00409A001023-L 3C02 00141 90409A000000 00409A001000-L 3C09 00010
90409A000000 00409A002345-L 8137 00015 00409A002345 00409A003217-R 8137 00045
00409A003217 00409A002345-L 8137 00045
Number of Packets Received 00406