98
authentication :
Enable authentication on this virtual link.
message-digest:
Authentication with MD-5.
null :
Overwrite password or packet summary with null authentication.
AUTH_KEY= authentication-key <
key
>.
<key>: A password consists of less than 8 characters.
INTERVAL
= [dead-interval | hello-interval |
message-digest-key<1-255>md5<LINE> |
retransmit-interval | transmit-delay] <value>.
<value>:>:
The delay or interval seconds, ranging between 1~65535.
<dead-interval>:
A neighbor is considered offline for certain dead interval without its group
messages which the default is 40 seconds.
<hello-interval>:
The time interval before the router sends a hello group message, default
is 10 seconds.
<message-digest-key>:
Authentication key with MD-5.
<retransmit-interval>:
The time interval before a router retransmitting a group message,
default is 5 seconds.
<transmit-delay>:
The time delay before a router sending a group messages, default is 1
second.
Default:
None.
Command Mode:
OSPF protocol mode.
Usage Guide:
In the OSPF all non-backbone areas will be connected to a backbone area. If the
connection to the backbone area is lost, virtual link will repair this connection. You can configure
virtual link between any two backbone area routers connected with the public non-backbone
area. The protocol treat routers connected by virtual links as a point-to-point network.
Example:
Switch#config terminal
Switch(config) #router ospf 100
Switch(config-router) #area 1 virtual-link 10.10.11.50 hello 5 dead 20
Relevant Commands: area authentication, show ip ospf, show ip ospf virtual-links
1.6.3.8 auto-cost reference-bandwidth
Command: auto-cost reference-bandwidth <bandwith>
no auto-cost reference-bandwidth
Function:
This command sets the way in which OSPF calculate the default metric value. The
“
no auto-cost reference-bandwidth
” command only configures the cost to the interface by
types.
Parameter: <bandwith>
reference bandwidth in Mbps, ranging between 1~
4294967.
Default:
Default bandwidth is 100Mbps.
Command Mode:
OSPF protocol mode.