AP Interface IPv6 Address

About this task

IPv6 is the latest revision of the Internet Protocol (IP) designed to replace IPv4. IPV6 provides enhanced identification and location information for computers on networks routing traffic across the Internet. IPv6 addresses are composed of eight groups of four hexadecimal digits separated by colons.

To review IPv6 Address interface statistics:

Procedure

  1. Select the Statistics menu from the Web UI.
  2. Expand the System node from the navigation pane (on the left-hand side of the screen).
    The System node expands to display the RF Domains created within the managed network.
  3. Expand an RF Domain node, select a controller or service platform, and select one of its connected access points.
    The Access Point's statistics menu displays in the right-hand side of the screen, with the Health tab selected by default.
  4. Expand the Interfaces menu.
  5. Select the IPv6 Address tab.
    The Statistics > AP > Interfaces > IPv6 Address > IPv6 Address screen displays by default in the right-hand pane.
    Click to expand in new window

    The IPv6 Address table displays the following sections:

    IPv6 Addresses Lists the IPv6 formatted addresses currently utilized by the access point in the selected interface.
    Status Lists the current utilization status of each IPv6 formatted address currently in use by this access point's selected interface.
    Address Type Lists whether the address is unicast or multicast in its utilization over the selected access point interface.
    Preferred Lifetime (Seconds) Lists is the time in seconds (relative to when the packet is sent) the IPv6 formatted addresses remains in a preferred state on the selected interface. The preferred lifetime must always be less than or equal to the valid lifetime.
    Valid Lifetime (Seconds) Displays the time in seconds (relative to when the packet is sent) the IPv6 formatted address remains in a valid state on the selected interface. The valid lifetime must always be greater than or equal to the preferred lifetime.
  6. Select the Link Local Address & Traffic Report tab to assess data traffic and errors discovered in transmitted and received IPv6 formatted data packets.

    This screen has the following information:

    The Link Local Address table:
    Address Lists the IPv6 local link address. IPv6 requires a link local address assigned to every interface the IPv6 protocol is enabled on, even when one or more routable addresses are assigned.
    Status Lists the IPv6 local link address utilization status and its current availability.
    Preferred Lifetime (Seconds) Lists is the time in seconds (relative to when the packet is sent) the local link addresses remains in the preferred state on the selected interface. The preferred lifetime must always be less than or equal to the valid lifetime.
    Valid Lifetime (Seconds) Displays the time in seconds (relative to when the packet is sent) the local link addresses remains in the valid state on the selected interface. The valid lifetime must always be greater than or equal to the preferred lifetime.
    The Traffic table displays the following information:
    Packets In Lists the number of IPv6 formatted data packets received on the selected access point interface since the screen was last refreshed.
    Packets Out Lists the number of IPv6 formatted data packets transmitted on the selected access point interface since the screen was last refreshed.
    Bytes In Displays the number of octets (bytes) with no errors received by the selected interface.
    Bytes Out Displays the number of octets (bytes) with no errors sent by the selected interface.
    Bad Packets Received Displays the number of bad IPv6 formatted packets received through the interface.
    Bad CRC Displays the CRC error. The CRC is the 4 byte field at the end of every frame. The receiving station uses it to interpret if the frame is valid. If the CRC value computed by the interface does not match the value at the end of frame, it is considered as a bad CRC.
    Collisions Displays the number of collisions over the selected interface. Excessive collisions occur when the traffic load increases to the point a single Ethernet network cannot handle it efficiently. A late collision is any collision that occurs after the first 64 octets of data have been sent. Late collisions are not normal, and usually the result of out of specification cabling or a malfunctioning device.
    The Receive Errors table displays the following information:
    Receive Length Errors Displays the number of IPv6 length errors received at the interface. Length errors are generated when the received IPv6 frame length was either less or over the Ethernet standard.
    Receive Over Errors Displays the number of IPv6 overflow errors received. Overflows occur when a packet size exceeds the allocated buffer size.
    Receive Frame Errors Displays the number of IPv6 frame errors received at the interface. A frame error occurs when data is received, but not in an expected format.
    Receive FIFO Errors Displays the number of IPv6 FIFO errors received at the interface. First-in First-out queueing is an algorithm that involves buffering and forwarding of packets in the order of arrival. FIFO entails no priority. There is only one queue, and all IPv6 formatted packets are treated equally. An increase in FIFO errors indicates a probable hardware malfunction.
    Receive Missed Errors Displays the number of missed IPv6 formatted packets. Packets are missed when the hardware received FIFO has insufficient space to store an incoming packet.
    The Transmit Errors table displays the following information:
    Transmit Errors Displays the number of IPv6 formatted data packets with errors transmitted on the interface.
    Transmit Aborted Errors Displays the number of IPv6 formatted packets aborted on the interface because a clear-to-send request was not detected.
    Transmit Carrier Errors Displays the number of IPv6 formatted carrier errors on the interface. This generally indicates bad Ethernet hardware or bad cabling.
    Transmit FIFO Errors Displays the number of IPv6 formatted FIFO errors transmitted at the interface. First-in First-Out queueing is an algorithm that involves the buffering and forwarding of packets in the order of arrival. FIFO uses no priority. There is only one queue, and all packets are treated equally. An increase in the number of FIFO errors indicates a probable hardware malfunction.
    Transmit Heartbeat Errors Displays the number of IPv6 formatted heartbeat errors. This generally indicates a software crash, or packets stuck in an endless loop.
    Transmit Window Errors Displays the number of IPv6 formatted window errors transmitted. TCP uses a sliding window flow control protocol. In each TCP segment, the receiver specifies the amount of additional received data (in bytes) the receiver is willing to buffer for the connection. The sending host can send only up to that amount. If the sending host transmits more data before receiving an acknowledgment, it constitutes a window error.
  7. Click Refresh to update the statistics counters to their latest value.
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