Juniper NETWORK AND SECURITY MANAGER 2010.4 - CONFIGURING SCREENOS DEVICES GUIDE REV 01 Manual page 342

Configuring ScreenOS Devices Guide
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Table 77: OSPF Interface Parameters
Parameters Your Action
Bind to Area Select a previously created area to bind the interface to that area. By
default, all interfaces are bound to area 0, the backbone area.
Cost Configure the metric for the interface. The cost associated with an
interface depends upon the bandwidth of the link to which the interface
is connected. The higher the bandwidth, the lower (more desirable)
the cost value.
Hello Interval Configure the number of seconds that the interface sends out OSPF
hello packets to the network. By default, the interface sends 10 hello
packets per second.
OSPF Priority Configure the priority level of the VR elected by the interface. The router
(designated router or backup designated router) with the larger priority
value has the best chance (although not guaranteed) of being elected.
Retransmit Interval Configure the number of seconds that elapse before the interface
resends an LSA to a neighbor that did not respond to the original LSA.
By default, the interface resends an unacknowledged LSA every 5
seconds.
Transmit Delay Configure the number of seconds between transmissions of link-state
update packets sent on the interface. By default, the interface sends
link-state updates every second.
Configuring Interface Configure how the interface forms adjacencies with other routers:
Link Type
Enable Reduction in Select to suppress LSA packets. When this option is enabled, the device
LSA Flooding sends LSA packets only when the LSA content has changed. By default,
(ScreenOS 5.1 and later this option is disabled.
only)
Configure to Ignore Select to ignore any mismatches in maximum transmission unit (MTU)
MTU Mismatch in DB values between the local and remote interfaces that are found during
Exchange (ScreenOS OSPF database negotiations. Use this option only when the MTU on
5.1 and later only) the local interface is lower than the MTU on the remote interface.
Interface OSPF Passive Select to prevent the interface from transmitting or receiving packets.
Mode The IP address of the interface is still advertised on the OSPF domain
as an OSPF route and not as an external route. You might want to
select this option when BGP is also enabled on the interface.
In addition you can configure OSPF demand circuit for ScreenOS 5.1 and later tunnel
interfaces only. An OSPF demand circuit is a network segment on which connect time
A point-to-point interface for OSPF forms an adjacency with only
one OSPF router in the area. If the local tunnel interface is to be
bound to multiple tunnels, you must configure the local tunnel
interface as a point-to-multipoint interface.
A regular multicast interface for OSPF acts as a broadcast interface,
and forms adjacencies with all routers in the area.
Copyright © 2010, Juniper Networks, Inc.