Ospf General Settings - D-Link DES-3350SR User Manual

TOS
Metric
Autonomous Systems External Link Advertisements
Autonomous Systems (AS) link advertisements are Type 5 link state advertisements. These advertisements are originated by AS
boundary routers. A separate advertisement is made for each destination known to the router that is external to the AS.
AS external link advertisements usually describe a particular external destination. For these advertisements the Link State ID field
specifies an IP network number. AS external link advertisements are also used to describe a default route. Default routes are used
when no specific route exists to the destination. When describing a default route, the Link Stat ID is always set the Default
Destination address (0.0.0.0) and the Network Mask is set to 0.0.0.0.
The format of the AS External Link Advertisement is shown below:
Field
Network Mask
E - bit
Forwarding Address
TOS
Metric
External Route Tag

OSPF General Settings

The OSPF General Settings menu allows OSPF to be enabled or disabled on the Switch − without changing the Switch's OSPF
configuration.
To view the following window, click Configuration > Layer 3 IP Networking > OSPF > OSPF General Settings. To enable
OSPF, first supply an OSPF Route ID (see below), select Enabled from the State drop-down menu and click the Apply button.
D-Link DES-3350SR Standalone Layer 3 Switch
The Type of Service that the following cost is relevant to.
The cost of this route. Expressed in the same units as the interface
costs in the router links advertisements.
AS External Link Advertisements
Link-State Age
Link-State Checksum
E TOS
Figure 9 - 26. AS External Link Advertisements
Description
The IP address mask for the advertised destination.
The type of external metric. If the E - bit is set, the metric specified
is a Type 2 external metric. This means the metric is considered
larger than any link state path. If the E - bit is zero, the specified
metric is a Type 1 external metric. This means that is comparable
directly to the link state metric.
Data traffic for the advertised destination will be forwarded to this
address. If the Forwarding Address is set to 0.0.0.0, data traffic will
be forwarded instead to the advertisement's originator.
The Type of Service that the following cost is relevant to.
The cost of this route. The interpretation of this metric depends on
the external type indication (the E - bit above).
A 32-bit field attached to each external route. This is not used by
the OSPF protocol itself.
Options
Link-State ID
Advertising Router
Link-State Sequence Number
Network Mask
Metric
Forwarding Address
External Route Tag
113
5
Length