Bedienungsanleitung Allied Telesis AT-9724TS (Seite 182 von 197) (Englisch)

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The following fields are displayed in the OSPF LSDB Table:

Parameter Description

Area ID

Allows the entry of an OSPF Area ID.This Area ID will then be used to search the table,and display an entry –

if there is one.

LSDB Type Displays which one of eight types of link advertisements by which the current link was discovered by the

Switch:

All,Router link (RTRLink),Network link (NETLink),Summary link (Summary),Autonomous System link

(ASSummary),Autonomous System external link (ASExternal),MCGLink (Multicast Group),and NSSA (Not So

Stubby Area)

Adv. Router ID Displays the Advertising Router’s ID.

Link State ID This field identifies the portion of the Internet environment that is being described by the advertisement.

The contents of this field depend on the advertisement's LS type.

LS Type LinkState ID

1 The originating router's Router ID.

2 The IP interface address of the network's Designated Router.

3 The destination network's IP address.

The Router ID of the described AS boundary router.

Cost Displays the cost of the table entry.

Sequence Displa

ys a sequence number corresponding to number of times the current link has been advertised as

changed.

Browse OSPF Neighbor Table

This table can be found in the OSPF Monitoring folder by clicking on the Browse OSPF Neighbor Tablelink.Routers that are connected to the same

area or segment become neighbors in that area.Neighbors are elected via the Hello protocol.IP multicast is used to send out Hello packets to other routers on

the segment.Routers become neighbors when they see themselves listed in a Hello packet sent by another router on the same segment.In this way,two-way

communication is guaranteed to be possible between any two neighbor routers.This table displays OSPF neighbors of the Switch.

Figur

e 9- 35.

OSPF Neighbor

Table

To search for OSPF neighbors,enter an IP address and click

Find.Valid OSPF neighbors will appear in the OSPF Neighbor Tablebelow.

OSPF V

irtual Neighbor

This table can be found in the OSPF Monitoring folder by clicking on the Browse OSPF Virtual Neighbor link.This table displays a list of Virtual

OSPF Neighbors

of the Switch.The user may choose specifically search a virtual neighbor by using one of the two search options at the top of the screen,

which are:

Parameter Description

Transit Area ID Allows the entry of an OSPF Area ID – previously defined on the Switch – that allows a remote area to

communicate with the backbone (area 0).A Transit Area cannot be a Stub Area or a Backbone Area.

Neighbor ID The OSPF router ID for the remote router.This IP address uniquely identifies the remote area’s Area Border

Router

181

Allied Telesyn AT-9724TS High-Density Layer 3 Stackable Gigabit Ethernet Switch

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