>[оверквотинг удален]
>#show mac-address-table
>Mac Address Table
>-------------------------------------------
>
>Vlan Mac Address Type Ports
>---- ----------- -------- -----
>All 0012.46a7.32c8 STATIC CPU
>All 0107.0ccc.ccb1 STATIC CPU
>1 0015.589a.4a51 DYNAMIC Fa0/1
>............................................

Это MAC-адреса, принадлежащие самой Цыске. Посмотрите их на интерфейсах. Например, у меня:

c2950#sh  mac-address-table
          Mac Address Table
-------------------------------------------

Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
All    000f.f7bc.2240    STATIC      CPU
All    0100.0ccc.cccc    STATIC      CPU
All    0100.0ccc.cccd    STATIC      CPU
All    0100.0cdd.dddd    STATIC      CPU

c2950#sh interfaces vlan 1
Vlan1 is administratively down, line protocol is down
  Hardware is CPU Interface, address is 000f.f7bc.2240 (bia 000f.f7bc.2240)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 36w6d
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicast)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out

MAC-адрес - 000f.f7bc.2240