Digisol DG-GS4826S Management Manual page 1207

that provides an adequate flow of routing information, but does not
produce unnecessary protocol traffic. However, note that this value
should be larger for virtual links. (Range: 1-3600 seconds; Default:
5 seconds)
transmit-delay seconds - Estimates the time required to send a
link-state update packet over the virtual link, considering the
transmission and propagation delays. LSAs have their age
incremented by this amount before transmission. This value must
be the same for all routers attached to an autonomous system.
(Range: 1-65535 seconds; Default: 1 second)
authentication - Specifies the authentication mode. If no optional
parameters follow this keyword, then plain text authentication is
used along with the password specified by the authentication-
key. If message-digest authentication is specified, then the
message-digest-key and md5 parameters must also be specified.
If the null option is specified, then no authentication is performed
on any OSPF routing protocol messages.
message-digest - Specifies message-digest (MD5)
authentication.
null - Indicates that no authentication is used.
authentication-key key - Sets a plain text password (up to 8
characters) that is used by neighboring routers on a virtual link to
generate or verify the authentication field in protocol message
headers. A separate password can be assigned to each network
interface. However, this key must be the same for all neighboring
routers on the same network (i.e., autonomous system). This key is
only used when authentication is enabled for the backbone.
message-digest-key key-id md5 key - Sets the key identifier and
password to be used to authenticate protocol messages passed
between neighboring routers and this router when using message
digest (MD5) authentication. The key-id is an integer from 0-255,
and the key is an alphanumeric string up to 16 characters long. If
MD5 authentication is used on a virtual link, then it must be enabled
on all routers within an autonomous system; and the key identifier
and key must also be the same for all routers.
C M
OMMAND ODE
Router Configuration
D S
EFAULT ETTING
area-id: None
router-id: None
hello-interval: 10 seconds
retransmit-interval: 5 seconds
transmit-delay: 1 second
dead-interval: 40 seconds
authentication-key: None
message-digest-key: None
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C 48 | IP Routing Commands
HAPTER
Open Shortest Path First (OSPFv2)