Cabletron Systems CSX1000, CSX1200 manual Bridge Commands

USER’S GUIDE

BRIDGE COMMANDS

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.

			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

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 <Esc> 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.

530 CyberSWITCH