routed ports Vs trunk ports

CCIE_2011CCIE_2011 Posts: 134Member
hi all ... !!!
What is the advantage of using trunk port over routed port between MLS switches in distro&core areas.(of-course when L3 switching is implemented) ?
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Comments

  • dtlokeedtlokee Posts: 2,381Member
    That depends on your design goals, think about the differences between how the two interfaces act and you will understand what the implications of each are. A trunk port is a L2 interface and will forward all broadcast and unknow unicast out the interface where a routed interface will not. There are other thoughts when it comes to filtering and security when using L3 interfaces.
    The only easy day was yesterday!
  • CCIE_2011CCIE_2011 Posts: 134Member
    But it is always a good practice to keep broadcast out the core area. Correct?
    Trunks pass broadcasts and routed ports dont. Therefore the only choice is routed port?
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  • dtlokeedtlokee Posts: 2,381Member
    Usually yes that is the case, but I have seen companies where they have members of the same deparmental workgroup spread across a couple buildings. If that is the case it may be necessary to forward broadcasts across the campus core to other buildings. (damn thos e pesky little custom apps that only work via broadcasting)
    The only easy day was yesterday!
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