Ospfv2 - D-Link xStack DGS-3620 Series Reference Manual

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xStack DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch Web UI Reference Guide
be created for the function that accepts these packets to verify these two bits (N and E-Bit). Bits matching the
checking feature will be accepted, while other bit combinations will be dropped.
The P-Bit
Also included in the Options field of the LSA type-7 packet, the P-Bit (propagate) is used to define whether or not to
translate the LSA type-7 packet into an LSA type-5 packet for distribution outside the NSSA.
LSA Type-7 Packet Features
•
LSA Type-7 address ranges for OSPF areas are defined as a pair, consisting of an IP address and a mask.
The packet will also state whether or not to advertise and it will also contain an external route tag.
•
The NSSA ASBR will translate external routes into type-7 LSAs to be distributed on the NSSA. NSSA
ABRs will optionally translate these type-7 packets into type-5 packets to be distributed among other OSPF
areas. These type-5 packets are indiscernible from other type-5 packets. The NSSA does not support type-
5 LSAs.
•
Once border routers of the NSSA have finished translating or grouping type-7 LSAs into type-5 LSAs, type-
5 LSAs should be flushed or reset as a translation or an aggregation of other type-7 LSAs.
•
The forwarding addresses contained in translated type-5 LSAs must be set, with the exception of an LSA
address range match.

OSPFv2

OSPF Global Settings
This window is used to configure the OSPF Global settings for the Switch.
To view the following window, click L3 Features > OSPF > OSPFv2 > OSPF Global Settings, as shown below:
The fields that can be configured or displayed are described below:
Parameter
OSPF State
OSPF Router ID
Current Router ID
Click the Apply button to accept the changes made.
OSPF Area Settings
This window is used to configure the OSPF area settings for the Switch. OSPF allows collections of contiguous
networks and hosts to be grouped together. Such a group, together with the routers having interfaces to any one of
the included networks, is called an area.
Figure 6-43 OSPF Global Settings window
Description
Click the radio buttons to enable or disable the OSPF global state.
A 32-bit number (in the same format as an IP address - xxx.xxx.xxx.xxx) that uniquely
identifies the Switch in the OSPF domain. It is common to assign the highest IP
address assigned to the Switch (router).
Display the OSPF Route ID currently in use by the Switch. This Route ID is displayed
as a convenience to the user when changing the Switch's OSPF Route ID.
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