D-Link DES-6500 Router Manual PDF (Setup & Configuration Guide)

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113

Figure 4- 67. Add/Modify OSPF Virtual Interface Setting

Configure the following parameters if you are adding or changing an OSPF Virtual Interface:

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 Router

The OSPF router ID for the remote router.

This is a 32-bit number in the

form of an IP address (xxx.xxx.xxx.xxx) that uniquely identifies the remote

area’s Area Border Router.

Hello Interval

Specify the interval between the transmission of OSPF Hello packets, in

seconds.

Enter a value between 1 and 65535 seconds.

The Hello

Interval, Dead Interval, Authorization Type, and Authorization Key should

have identical settings for all routers on the same network.

Dead Interval

Specify the length of time between (receiving) Hello packets from a

neighbor router before the selected area declares that router down. Again,

all routers on the network should use the same setting.

Auth Type

If using authorization for OSPF routers, select the type being used. MD5

key authorization must be set up in the MD5 Key Settings menu.

Auth. Key

Enter a case-sensitive password for simple authorization or enter the MD5

key you set in the MD5 Key settings menu.

NOTE:

For OSPF to function properly some settings should

be identical on all participating OSPF devices. These settings

include the Hello Interval and Dead Interval. For networks

using authorization for OSPF devices, they Authorization

Type and Password or Key used must likewise be identical.

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Area Aggregation Configuration

Area Aggregation allows all of the routing information that may be contained within an area

to be aggregated into a summary LSDB advertisement of just the network address and subnet

mask.

This allows for a reduction in the volume of LSDB advertisement traffic as well as a

reduction in the memory overhead in the switch used to maintain routing tables.

Click the OSPF Area Aggregation Settings link to view the current settings. There are no

aggregation settings configured by default, so there will not be any listed the first accessing

the menu. To add a new OSPF Area Aggregation setting, click the

Add

button. A new menu

(pictured below) appears. To change an existing configuration, click on the hyperlinked Area

ID for the set you want to change. The menu to modify an existing configuration is the same

as the menu used to add a new one. To eliminate an existing configuration, click the

X

in the

Delete column for the configuration being removed.

Figure 4- 68. OSPF Area Aggregation Settings table

Use the menu below to change settings or add a new Area Aggregation setting.

Figure 4- 69. Add/Modify OSPF Aggregation Configuration

Specify the OSPF Aggregation settings and click the

Apply

button to add or change the

settings. The new settings will appear listed in the OSPF Area Aggregation Settings table. To

view the table, click the Show All OSPF Aggregation Entries

link to return to the previous

window.

Configure the following settings for OSPF Area Aggregation:

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Parameter

Description

Area ID

Allows the entry the OSPF Area ID for which the routing

information will be aggregated.

This Area ID must be previously

defined on the switch.

Network Number

Sometimes called the Network Address. The 32-bit number in the form of an IP

address that uniquely identifies the network that corresponds to the OSPF Area

above.

Network Mask

Enter the subnet Mask of the Network Number entered above. Each

address range is defined as a pair (address, mask) and both must be

correctly entered to properly configure the OSPF Aggregation.

LSDB Type

This is a read only field that denotes the LSDB Type,

Summary

, on

the Switch.

Select

Enabled

or

Disabled

to determine whether the selected OSPF

Area will advertise it’s summary LSDB (Network-Number and

Network-Mask).

OSPF Host Route Settings

OSPF host routes work in a way analogous to RIP, only this is used to share OSPF

information with other OSPF routers. This is used to work around problems that might

prevent OSPF information sharing between routers.

To configure OSPF host routes, click the OSPF Host Route Settings link. To add a new OSPF

Route, click the

Add

button. Configure the setting in the menu that appears. The Add and

Modify menus for OSPF host route setting are nearly identical. The difference being that if

you are changing an existing configuration you will be unable to change the Host Address. To

change an existing configuration, click on the hyperlinked Host Address in the list for the

configuration you want to change and proceed to change the metric or area ID. To eliminate

an existing configuration, click the

X

in the Delete column for the configuration being

removed.

Figure 4- 70. OSPF Host Route Settings table

Use the menu below to set up OSPF host routes.

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Figure 4- 71. Add/Modify OSPF Host Route Settings

Specify the host route settings and click the

Apply

button to add or change the settings. The

new settings will appear listed in the OSPF Host Route Settings list. To view the previous

window, click the Show All OSPF Host Route Entries

link to return to the previous window.

The following fields are configured for OSPF host route:

Parameter

Description

Host Address

The IP address of the OSPF host.

Metric

A value between 1 and 65,535 that will be advertised for the route.

Area ID

A 32-bit number in the form of an IP address (xxx.xxx.xxx.xxx) that uniquely

identifies the OSPF area in the OSPF domain.

BOOTP/DHCP Relay

The BOOTP hops count limit allows the maximum number of hops (routers) that the BootP

messages can be relayed through to be set. If a packet’s hop count is more than the hop count

limit, the packet is dropped. The range is between

1

and

16

hops, with a default value of

4

.

The relay time threshold sets the minimum time (in seconds) that the Switch will wait before

forwarding a BOOTREQUEST packet. If the value in the seconds field of the packet is less

than the relay time threshold, the packet will be dropped. The range is between

0

and

65,536

seconds, with a default value of

0

seconds.

BOOT/DHCP Relay Information

To enable and configure BOOTP or DHCP on the switch, click on the

BOOTP/DHCP Relay

folder from the Configuration folder and then click on the

BOOTP/DHCP Relay

Information

link:

Figure 4- 72.

BOOTP/DHCP Relay Information window

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The following fields can be set:

Parameter

Description

BOOTP/DHCP Relay

Status <

Disabled

>

This field can be toggled between

Enabled

and

Disabled

using the pull-

down menu.

It is used to enable or disable the BOOTP/DHCP Relay

service on the switch. The default is

Disabled

BOOTP HOPS Count

Limit

[

4

]

This field allows an entry between

1

and

16

to define the maximum number

of router hops BOOTP messages can be forwarded across. The default hop

count is

4

.

BOOTP/DHCP Relay

Time Threshold [

0

]

Allows an entry between

0

and

65535

seconds, and defines the maximum

time limit for routing a BOOTP/DHCP packet. If a value of 0 is entered, the

switch will not process the value in the seconds field of the BOOTP or

DHCP packet. If a non-zero value is entered, the switch will use that value,

along with the hop count to determine whether to forward a given BOOTP or

DHCP packet.

BOOTP/DHCP Relay Settings

To configure the

BOOTP/DHCP Relay Settings

, click on the

BOOTP/DHCP Relay

Settings

link:

Figure 4- 73. DHCP/BOOTP Relay Settings window

The following fields can be set:

Parameter

Description

Interface

The interface name of the IP interface on which the BOOTP or DHCP

servers reside.

BOOTP/DHCP Server

<

0.0.0.0

>

Allows the entry of IP addresses for up to four BOOTP or DHCP servers.

DNS Relay

Computer users usually prefer to use text names for computers they may want to open a

connection with. Computers themselves, require 32 bit IP addresses. Somewhere, a database

of network devices’ text names and their corresponding IP addresses must be maintained.

The Domain Name System (DNS) is used to map names to IP addresses throughout the

Internet and has been adapted for use within intranets.

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