ZyXEL Communications XS3800-28, Руководство пользователя, Страница: 510 / 789

Chapter 67 OSPF
XS3800-28 User’s Guide
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The following table describes the labels in this screen.
Table 270 NETWORKING > OSPF > IPv4 OSPF > OSPF Interface > Add/Edit
LABEL DESCRIPTION
Network Select an IP interface.
Area ID Select the area ID (in an IP address format with dotted decimal notation) of an area to
associate the interface to that area.
Network Type Select the network type ( broadcast / point-to-point ) of this OSPF network. You should select a
network type that best suits your OSPF network for your network to correctly exchange routing
information. The default is
broadcast network.
Select broadcast if the OSPF network consists of more than two routers with multiple endpoints.
The Switch will automatically elect a DR/BDR for the network.
Select point-to-point if the OSPF network consists of only two routers. Communications in the
network is based on this point-to-point connection. In this case, a DR/BDR is not needed.
Note: You can only set the network type to broadcast if the interface you select in the
Network field is a loopback interface.
Authentication
Note: OSPF Interfaces must use the same authentication method within the same
area.
Select an authentication method. The choices are Same-as-Area , None (default), Simple and
MD5 .
To participate in an OSPF network, you must make the authentication method and/or
password settings the same as the associated area.
Select Same-as-Area to use the same authentication method within the area and set the
related fields when necessary.
Select None to disable authentication. This is the default setting.
Select Simple and set the Key field to authenticate OSPF packets transmitted through this
interface using simple password authentication.
Select MD5 and set the Key ID and Key fields to authenticate OSPF packets transmitted
through this interface using MD5 authentication.
Key ID When you select MD5 in the Authentication field, specify the identification number of the
authentication you want to use.
Key When you select Simple in the Authentication field, enter a password eight-character long.
Characters after the eighth character will be ignored.
When you select MD5 in the Authentication field, enter a password 16-character long.
Cost The interface cost is used for calculating the routing table. Enter a number between 1 and
65535. The default interface cost is 15.
Priority The priority you assign to the interface is used in router elections to decide which router is going
to be the Designated Router (DR) or the Backup Designated Router (BDR). You can assign a
number between 0 and 255. A priority of 0 means that the router will not participate in router
elections.
Retransmit
Interval Specify how long (in seconds) the Switch should wait for an acknowledgment packet from the
interface's neighbor device before retransmitting link-state advertisements (LSAs) on the
interface. The valid range for retransmitting is between 1 and 65535. The default value is 5
seconds.
Transmit Delay Set the estimated time (in seconds) that is required to transmit a link-state update packet on the
interface. The valid range for transmitting delay is between 1 and 65535. The default value is 1
second.