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Bridging Commands
Page 17-16
Displaying Media Access Control (MAC) Information for a Specific MAC
address
Media Access Control (MAC) information for the switch can be examined by using the macinfo
command. You can view specific MAC address information, or choose a slot and view all
MAC addresses associated with the selected slot.
To view MAC information for a specific address:
1. Enter
macinfo at the system prompt and press <return>.
2. You will be prompted with the following message:
Enter MAC address ([XXYYZZ:AABBCC] or return for none):
Enter the MAC address you are interested in viewing, and press <return>.
3. You will be prompted with the following message:
Is this MAC in Canonical or Non-Canonical form (C or N) [C]:
Enter c for Canonical or n for Non-Canonical (the default is at the end of the prompt in
brackets) and press <return>. A table similar to the following is shown:
Group CAM Set MAC Last Exp ATM
Slot/Intf/Srvc/Inst ID Index by Type Seen Timer VCI Protocol
------------------------- -------- -------- ----- ------- ------- -------- ------- -------------
3/ 1/ Brg/ 1 1 0346 TB ETH 11 15
Field Descriptions
The following section explains the fields displayed using the macinfo command that are not
previously explained in other sections.
Set by. This field lists what type of bridging was used to learn this MAC address. There are
two possibilities:
TB This MAC address was learned using Transparent Bridging.
SR This MAC address was learned using Source Routing.
MAC Type. The media type of this MAC address. There are two possibilities:
E Ethernet
F FDDI
T Token Ring
Protocol. If Group Mobility is enabled, this field will list the type of packet encapsulation used
when this MAC address was learned. For additional information on Group Mobility, see
Chapter 19, “Managing Groups and Ports.”