Transit Delay

1 second

The estimated number of seconds it takes to transmit a link state

 

 

update packet over this interface.

 

 

Range: 0-3600 seconds

Retransmit Interval

5 seconds

The number of seconds between retransmitting link-state

 

 

advertisements to router adjacencies on this interface. This value is

 

 

also used when retransmitting database descriptions and link-state

 

 

request packets.

 

 

Range: 0-3600 seconds

Hello Interval *2

10 seconds

The interval, in seconds, between sending Hello packets out the

 

 

router interface. This interval determines how fast topology changes

 

 

will be detected. However, for small intervals, more overhead will be

 

 

incurred in exchanging routing information.

 

 

Range: 1-65535 seconds

Dead Interval *2

40 seconds

The number of seconds that a router’s Hello packets have not been

 

 

seen before its neighbors declare the router down. This should be a

 

 

multiple of the Hello interval.

 

 

Range: 1-65535 seconds

Poll Interval

120 seconds

Sets the poll interval (in seconds) for this interface. If a neighboring

 

 

router has become inactive (Hello Packets have not been seen for

 

 

Router Dead Interval), then it may still be necessary to send Hello

 

 

Packets to the dead neighbor. These Hello Packets are sent at the

 

 

reduced rate which should be much larger than Hello Interval. The

 

 

default is 120 seconds.

Authentication Type NONE

Use this option to specify how to authenticate neighboring OSPF

 

 

routers. There are three options:

 

 

NONE: Not to authenticate neighboring routers.

 

 

SIMPLE: Use password to authenticate neighboring OSPF routers.

 

 

The password is assigned on Authentication Key field. With SIMPLE

 

 

authentication, the password goes in clear-text over the network.

 

 

Thus, anyone with a sniffer software on the OSPF network segment

 

 

would be able to pull the OSPF password, and the network attacker

 

 

would be one step closer to compromising your OSPF environment.

 

 

MD5: Use MD5 to authenticate neighboring routers. With MD5

 

 

authentication, the key does not pass over the network. MD5 is a

 

 

message-digest algorithm specified in RFC1321. MD5 should be

 

 

considered the most secure OSPF authentication mode. You have to

 

 

specify an active MD5 key on MD5 Key Table.

Authentication Key

 

When use SIMPLE authentication type, enter the password here. The

 

 

password can be any string of keyboard-entered characters up to 8

bytes in length. All neighboring routers on the same network must have the same password to exchange OSPF information.

WGS3 Layer 3 Switch User’s Manual

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