Cisco switch

Hi,

Can anyone please explain what is the meaning of ipv4 indirect unicast in case of cisco switches?

Thanks

Comments

  • I got really confused by your question at first but I think you mean unknown unicast.

    A switch learns where devices are connected by looking at the source MAC address. This then populates the MAC address table.

    Some frames are flooded in a switch, broadcast frames like ARP are flooded within the VLAN because they need to reach all devices. Multicast may also be flooded unless IGMP snooping is enabled.

    Unknown unicast means that a frame is destined for a device that is not in the MAC address table. That means that the frame must be flooded out all ports in the VLAN. If the device responds back, the switch learns where it is connected and the next frame will not be flooded.

  • Hi,

    Can anyone please explain what is the meaning of ipv4 indirect unicast in case of cisco switches?

    Thanks

     

    Hi,

    The IPv4 indirect unicast routes is a table in TCAM where all the unicast IPv4 learned/configured routes which are not directly connected to that device are stored.

     

    More details here: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-0_1_se/configuration/guide/3750xcg/swsdm.html

     

    Gabriel

     

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