Owner's Manual

240 OSPF Commands
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If the delay is not added before transmission over a link, the time in which the LSA
propagates over the link is not considered. This setting has more significance on very low-
speed links.
Example
The following example sets the estimated time required to send a link-state update packet on the
OSPF virtual link interface to 10 seconds.
authentication
The authentication ospf virtual link interface configuration command enables authentication for
OSPF packets and specifies the type of authentication. To prevent authentication, use the
no form
of this command.
Syntax
authentication { text text | md5 name-of-chain }
no authentication
• text text —Clears text authentication. The string can contain from 1 to 8 uppercase and
lowercase alphanumeric characters.
•
md5 name-of-chain —Keyed Message Digest 5 (MD5) authentication.
Default Configuration
No authentication is provided for OSPF packets.
Command Mode
OSPF virtual link configuration
User Guidelines
There are no user guidelines for this command.
Example
The following example enables authentication for OSPF packets as MD5 with chain name of "hhv".
Console (config)# router ospf area 1.1.1.1 virtual-link 1.1.1.1
Console# (config-vlink)# transmit-delay 10
Console (config)# router ospf area 1.1.1.1
virtual-link 1.1.1.1
Console# (config-vlink)# authentication md5 hhv