topic RE: self port mac address in ExtremeSwitching (EXOS/Switch Engine)

self port mac address

Gaurav_Madan — Thu, 12 May 2016 10:58:00 GMT

Hi

On extreme SummitX 460-48 how do we see MAC address of self port ?

I mean there is one switch mac address ( some vendor call as backplane mac ) which we can see in sh switch etc .
Addition to this ; there should be a MAC for each of 48 ports .. how do i see that ?

"sh fdb < >" will show me mac learn on port ; but i am interested to know self-mac address of each port .

Something like quivalant of "show interface < > | inc bia" in cisco switches .

Thanks
/G

RE: self port mac address

shashank_sharma — Thu, 12 May 2016 11:06:00 GMT

I think u should try show iparp it will also provide u port no ,mac address and ip

RE: self port mac address

Senguttuvan__Ar — Thu, 12 May 2016 11:08:00 GMT

Hi,

With extreme it is only single MAC which you see in "show switch" output. All ports share the same MAC.

RE: self port mac address

Gaurav_Madan — Thu, 12 May 2016 11:41:00 GMT

Senguttuvan, Arun, :: I do not think that can be true ..

SW1 -1-------------------1- SW2
---2----------------2--

SW1 port 1 : vlan 10 : inte vlan 10 : 10.0.0.1
SW2 port 1 : vlan 10 : inte vlan 10 : 10.0.0.2

SW1 port 2 : vlan 20 : inte vlan 10 : 20.0.0.1
SW2 port 2 : vlan 20 : inte vlan 10 : 20.0.0.2

SW1 #ping 10.0.0.2
SW1 # ping 20.0.0.2

what will be mac learnt on SW2 port 1 and port 2

RE: self port mac address

Prashanth_KG — Thu, 12 May 2016 14:55:00 GMT

Hi Gaurav,

You will see the switch1's mac address on both the ports of switch 2.
However, the mac-address would be associated to different vlans.

Sample output:

X670V-48x.14 # sh fdbMac Vlan Age Flags Port / Virtual Port List
------------------------------------------------------------------------------
00:04:96:51:f9:73 test(2000) 0002 d m 5
00:04:96:51:f9:73 Test123(1000) 0005 d m 6

We will have the vlan and the mac association in the mac-table. So, the same mac address will be learnt on the corresponding ports.

Hope this helps!

RE: self port mac address

Drew_C — Thu, 12 May 2016 15:58:00 GMT

Arun is correct. There is only one MAC address assigned to the switch and it is used for all ports. The only exception is on some of our modular chassis switches, but even then only the mgmt port may have a different MAC. All ports use the same one in these systems as well.

RE: self port mac address

EtherMAN — Thu, 12 May 2016 19:45:00 GMT

yep been that way for 20 years....