Tracing mac-address on 6509

Unanswered Question
Aug 8th, 2008
User Badges:

Hi all,


I am trying to trace a mac-address to find out what device it is and where is it connected. this is what I get

CENTSWCORE01# sh mac-address-table | include 001e.4a72.0d80

* 4 001e.4a72.0d80 dynamic Yes 0 Po305

* 3 001e.4a72.0d80 dynamic Yes 0 Po305

* 15 001e.4a72.0d80 dynamic Yes 5 Po305

* 12 001e.4a72.0d80 dynamic Yes 0 Po305

* 10 001e.4a72.0d80 dynamic Yes 5 Po305

* 11 001e.4a72.0d80 dynamic Yes 0 Po305


Does anyone knows what po305 is?



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Jon Marshall Fri, 08/08/2008 - 06:48
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

Po305 is an etherchannel connection. So in all likelihood your mac-address is on the device at the other end of the etherchannel.


"sh etherchannel summary" will show you which individual interfaces that form the etherchannel.


"sh cdp neighbor detail" will then show the devices on the other end of the interfaces.


You need to then log onto that device and run the mac-address-table command again.


Jon

emmanuel.shoroma Fri, 08/08/2008 - 07:06
User Badges:

Thanks.


From the device on the otherside of the turnnel, I get the foolowing


CENTSWCORE02#sh mac-address-table address 001e.4a72.0d80

Legend: * - primary entry

age - seconds since last seen

n/a - not available


vlan mac address type learn age ports

------+----------------+--------+-----+----------+--------------------------

Active Supervisor:

* 4 001e.4a72.0d80 dynamic Yes 0 Po1


Another question. What is p01?

emmanuel.shoroma Fri, 08/08/2008 - 07:08
User Badges:

P01 seems to be pointing me back to the otherside.


CENTSWCORE02#sh cdp neighbors p01

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge

S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone


Device ID Local Intrfce Holdtme Capability Platform Port ID

CENTSWCORE01 Gig 2/48 176 R S I WS-C6506- Gig 2/48

CENTSWCORE01 Gig 5/2 171 R S I WS-C6506- Gig 5/2

froggy3132000 Fri, 08/08/2008 - 07:33
User Badges:
  • Bronze, 100 points or more

on the first CAT do


show interface po 305


on the other one do


show interface po 1


Its a cisco MAC so its mor than likely one of the interfaces.

abdel.ibrahim Wed, 10/01/2008 - 07:09
User Badges:

Po means port-channel.you might have some ether-channel bundles on the 6509, which this interface is bind to(305). Do show etherchannel port-channel to see all bindings.

Actions

This Discussion