Fortinet 548B, Administration Manual

Page: 882 / 976

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Hello Interval - Enter the OSPFv3 hello interval for the specified interface in seconds. This
parameter must be the same for all routers attached to a network. Valid values range from 1 to
65,535. The default is 10 seconds.
Dead Interval - Enter the OSPFv3 dead interval for the specified interface in seconds. This specifies
how long a router will wait to see a neighbor router's Hello packets before declaring that the router is
down. This parameter must be the same for all routers attached to a network. This value should a
multiple of the Hello Interval (e.g. 4). Valid values range from 1 to 2147483647. The default is 40.
Iftransit Delay Interval - Enter the OSPFv3 Transit Delay for the specified interface. This specifies
the estimated number of seconds it takes to transmit a link state update packet over the selected
interface. Valid values range from 1 to 3600 seconds (1 hour). The default value is 1 second.
MTU Ignore - Disables OSPFv3 MTU mismatch detection on receiving packets. Default value is
Disable.
Passive Mode - Make an interface passive to prevent OSPF from forming an adjacency on an
interface. OSPF advertises networks attached to passive interfaces as stub networks. Interfaces are
not passive by default.
Interface Type - The interface type, which can either be set to broadcast mode or point to point
mode. The default interface type is broadcast.
Metric Cost - Enter the value on this interface for the cost TOS (type of service). The range for the
metric cost is between 1 and 65,535. Metric Cost is only configurable if OSPFv3 is initialized on the
interface.
Non-Configurable Data
IPv6 Address - The IPv6 address of the interface.
LSA Ack Interval - The number of seconds between LSA Acknowledgment packet transmissions,
which must be less than the Retransmit Interval.
State - The current state of the selected router interface. One of:
•
Down - This is the initial interface state. In this state, the lower-level protocols have indicated
that the interface is unusable. In this state, interface parameters will be set to their initial
values. All interface timers will be disabled, and there will be no adjacencies associated with
the interface.
•
Loopback - In this state, the router's interface to the network is looped back either in
hardware or software. The interface is unavailable for regular data traffic. However, it may
still be desirable to gain information on the quality of this interface, either through sending
ICMP pings to the interface or through something like a bit error test. For this reason, IP
packets may still be addressed to an interface in Loopback state. To facilitate this, such
interfaces are advertised in router- LSAs as single host routes, whose destination is the IP
interface address.
•
Waiting - The router is trying to determine the identity of the (Backup) Designated Router for
the network by monitoring received Hello Packets. The router is not allowed to elect a
Backup Designated Router or a Designated Router until it transitions out of Waiting state.
This prevents unnecessary changes of (Backup) Designated Router.
•
Designated Router - This router is itself the Designated Router on the attached network.
Adjacencies are established to all other routers attached to the network. The router must
also originate a network-LSA for the network node. The network- LSA will contain links to all
routers (including the Designated Router itself) attached to the network.
•
Backup Designated Router - This router is itself the Backup Designated Router on the
attached network. It will be promoted to Designated Router if the present Designated Router
fails. The router establishes adjacencies to all other routers attached to the network. The
Backup Designated Router performs slightly different functions during the Flooding
Procedure, as compared to the Designated Router.