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WGS3 Layer 3 Switch User’s Manual
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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.