Hi Wilson. Perhaps it could be answered by you stating why you think each sub-interface needs its own MAC address. Each sub-interface will be in its own broadcast domain, so ARP/RARP will be fine and the switch forwarding databases does not solely rely on the MAC address to make decisions.
Cheers, Adam On Mon, Jul 15, 2013 at 7:31 AM, Wilson Tuma <[email protected]> wrote: > Hi Guys > > > From the output below is is apparent that sub-interface inherit the mac > address of the parent. > > Why? Shouldn't the mac address be unique for each sub interface? > > > > > R6(config)#do sh ip int brief | in FastEthernet0/0 > FastEthernet0/0 unassigned YES manual up > FastEthernet0/0.67 155.5.67.6 YES manual up > FastEthernet0/0.111 1.1.1.1 YES manual up > FastEthernet0/0.146 155.5.146.6 YES manual up > > > > > R6(config)# > R6(config)#do sh ip int brief | in bia > R6(config)#do sh int fa 0/0 | in bia > Hardware is Gt96k FE, address is 001b.d5ac.5d9a (bia 001b.d5ac.5d9a) > > R6(config)#do sh int fa 0/0.67 | in bia > Hardware is Gt96k FE, address is 001b.d5ac.5d9a (bia 001b.d5ac.5d9a) > > R6(config)#do sh int fa 0/0.146 | in bia > Hardware is Gt96k FE, address is 001b.d5ac.5d9a (bia 001b.d5ac.5d9a) > > R6(config)#do sh int fa 0/0.111 | in bia > Hardware is Gt96k FE, address is 001b.d5ac.5d9a (bia 001b.d5ac.5d9a) > > > > Thanks. > > Wilson F. Tuma > ==================================== > > > Box 1784 Douala > Cell : +237 77 11 74 77 > Email : [email protected] > ==================================== > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
