Configuring IPv6 Discovery in Gaia Portal

Important - In a ClusterClosed Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing., you must configure all the Cluster Members in the same way.

To enable router discovery services:

  1. From the left navigation tree, click Advanced Routing > IPv6 Router Discovery.

  2. In the Router Discovery section, click Add.

  3. In the Interface field, select the interface, on which to enable Router Discovery.

  4. Optional: In the Min. Advertise Interval field, configure the applicable value.

    Configures the minimum time allowed between sending unsolicited multicast ICMPv6 Router Advertisements on this interface.

    Unsolicited Router Advertisements are not strictly periodic.

    The interval between two advertisements is randomized to decrease the probability of synchronization with the advertisements from other routers on the same links.

    When an unsolicited advertisement is sent, the timer is reset to a random value between the Min. Advertise Interval and the Max. Advertise Interval.

    Range: 3-1799 seconds

    Default: (Value of Max. Advertise Interval) / 3 seconds

  5. Optional: In the Max. Advertise Interval field, configure the applicable value.

    Configures the maximum time allowed between sending unsolicited multicast ICMPv6 Router Advertisements on this interface.

    Unsolicited Router Advertisements are not strictly periodic.

    The interval between two advertisements is randomized to decrease the probability of synchronization with the advertisements from other routers on the same links.

    When an unsolicited advertisement is sent, the timer is reset to a random value between the Min. Advertise Interval and the Max. Advertise Interval.

    Range: 4-1800 seconds

    Default: 600 seconds

  6. Optional: In the Advertisement Lifetime field, configure the applicable value.

    Configures how long from receipt of a Router Advertisement message that a host considers this router to be valid.

    If the router lifetime expires with no refreshing Router Advertisement, the host stops using this router.

    The value is placed in the Router Lifetime field of the Router Advertisement message.

    A value of 0 means that the router is not used as a default router.

    Range: from Max. Advertise Interval to 9000 seconds, or 0 seconds

    Default: 3 * (Value of Max. Advertise Interval) seconds

  7. Optional: In the Reachable Timer field, configure the applicable value.

    Configures how long a node assumes a neighbor is reachable after having received a reachability confirmation.

    This value is used by the Neighbor Unreachability Detection.

    The reachable time is placed in the Reachable Time field in the Router Advertisement message.

    The value 0 means it is unspecified by this router.

    Range: 0-3600000 seconds

    Default: 0 seconds

  8. Optional: In the Retransmission Timer field, configure the applicable value.

    Configures the interval between retransmitted Neighbor Solicitation messages if the node does not receive a response.

    This value is used by address resolution and Neighbor Unreachability Detection.

    The retransmit timer is placed in the Retrans Timer field in the Router Advertisement message.

    The value 0 means it is unspecified by this router.

    Range: 0-2147483647 seconds

    Default: 0 seconds

  9. Optional: In the Hop Limit field, configure the applicable value.

    Configures the Cur Hop Limit field of the Router Advertisement message.

    This value is used by neighboring nodes as the Hop Count field of the IP header in outgoing IP packets.

    The value of 0 means it is unspecified by this router.

    Range: 0-255

    Default: 64

  10. Optional: The Managed Config option controls whether to perform stateful IP address autoconfiguration.

    Specifies whether to obtain global IPv6 addresses through DHCPv6 (as opposed to stateless address autoconfiguration provided by ICMPv6 Router Discovery).

    This option is placed in the Managed address configuration flag in the Router Advertisement message.

    Range: Selected, or Cleared

    Default: Cleared

  11. Optional: The Other Config Flag option controls whether to perform stateful autoconfiguration to obtain other configuration information besides IP addresses.

    Stateful autoconfiguration is provided by DHCPv6, as opposed to stateless autoconfiguration provided by ICMPv6 Router Discovery.

    Examples of such information include information related to DNS, or information on other servers within the network.

    This option is placed in the Other configuration flag in the Router Advertisement message.

    Range: Selected, or Cleared

    Default: Cleared

  12. Optional: The Send MTU option controls whether to include MTU options.

    If this option is enabled, Router Advertisement messages (sent to neighboring nodes) include MTU options.

    Range: Selected, or Cleared

    Default: Cleared

  13. Optional: In the Advertise Addresses section, configure how to advertise the IP addresses on this interface.

    1. Select the IP address and click Edit.

    2. The Enable On-Link option controls whether this IPv6 address prefix is available on the link.

      This is necessary because it is possible to have multiple prefix combinations on the same subnet in IPv6.

      Range: Selected, or Cleared

      Default: Selected

    3. The Enable Autonomous Address Configuration: option controls whether the given address prefix can be used by ICMPv6 Router Discovery clients for autonomous address configuration.

      Range: Selected, or Cleared

      Default: Selected

    4. The Valid Lifetime option controls how long the specified prefix is valid for on-link determination.

      This value is placed in the Valid Lifetime field in the Prefix Information option.

      This value must not be less than the configured Preferred Lifetime.

      The designated value of 4294967295 represents infinity.

      Range: 0-4294967295 seconds

      Default: 2592000 seconds (30 days)

    5. The Preferred Lifetime value controls the preferred lifetime of the specified IPv6 address prefix.

      This value is placed in the Preferred Lifetime field in the Prefix Information option in Router Advertisements.

      It conveys how long IPv6 addresses generated from the specified IPv6 address prefix through stateless address autoconfiguration should stay preferred. (Stateless address autoconfiguration is the mechanism used by ICMPv6 Router Discovery protocol, as opposed to stateful address autoconfiguration provided by DHCPv6.) That means the node can use the IPv6 address in existing connections, but it is not valid for new connections.

      This value must not be greater than the configured Valid Lifetime.

      For more information, see RFC 4862.

      The designated value of 4294967295 represents infinity.

      Range: 0-4294967295 seconds

      Default: 604800 seconds (7 days)

    6. Click OK.

  14. Optional: In the Advertise DNS Information section, configure options for recursive DNS server advertising and for DNS domain hostname advertising.

    1. Click Add and select Server.

    2. In the DNS field, enter the applicable IPv6 network address.

    3. In the DNS Lifetime field, configure how long hosts should store this recursive DNS server.

      Range: from (Max. Advertise Interval) to (2 x Max. Advertise Interval) seconds

      Default: 1.5 * Max. Advertise Interval seconds

    4. Click OK.

    1. Click Add and select Hostname.

    2. In the DNS field, enter the applicable fully qualified DNS hostname.

    3. In the DNS Lifetime field, configure how long hosts should store this DNS hostname.

      Range: from (Max. Advertise Interval) to (2 x Max. Advertise Interval) seconds

      Default: 1.5 * Max. Advertise Interval seconds

    4. Click OK.

    Note - If you add or edit a DNS entry to have the same value as an existing entry, the new configuration overwrites the existing entry.

  15. Click Save.