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Ospf neighbors, Ospf aggregates – Amer Networks E5Web GUI User Manual

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InfTrans Delay

Specifies the estimated transmit delay for the interface. This value
represents the maximum time it takes to forward a LSA packet
trough the router.

Wait Interval

Specifies the number of seconds between the interface brought
up and the election of the DR and BDR. This value should be
higher than the hello interval.

Router Priority

Specifies the router priority, a higher number increases this
routers chance of becoming a DR or a BDR. If 0 is specified then
this router will not be eligible in the DR/BDR election.

Note

An HA cluster will always have 0 as router priority, and
can never be used as a DR or BDR.

Sometimes there is a need to include networks into the OSPF router process, without running
OSPF on the interface connected to that network. This is done by enabling the Passive option: No
OSPF routers connected to this interface ("Passive")
.

This is an alternative to using a Dynamic Routing Policy to import static routes into the OSPF
router process.

If the Ignore received OSPF MTU restrictions is enabled, OSPF MTU mismatches will be
allowed.

4.6.3.4. OSPF Neighbors

In some scenarios the neighboring OSPF router to a security gateway needs to be explicitly
defined. For example, when the connection is not between physical interfaces.

The most common situation for using this is when a VPN tunnel is used to connect two
neighbors and we need to tell cOS Core that the OSPF connection needs to be made through the
tunnel. This type of VPN usage with IPsec tunnels is described further in Section 4.6.5, “Setting Up
OSPF”
.

cOS Core OSPF Neighbor objects are created within an OSPF Area and each object has the
following property parameters:

Interface

Specifies which OSPF interface the neighbor is located on.

IP Address

The IP Address of the neighbor. This is the IP Address of the neighbors OSPF
interface connecting to this router. For VPN tunnels this will be the IP address of
the tunnel's remote end.

Metric

Specifies the metric to this neighbor.

4.6.3.5. OSPF Aggregates

OSPF Aggregation is used to combine groups of routes with common addresses into a single
entry in the routing table. If advertised this will decreases the size of the routing table in the
security gateway, if not advertised this will hide the networks.

cOS Core OSPF Aggregate objects are created within an OSPF Area and each object has the
following parameters:

Chapter 4: Routing

309

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