97
Usage Guide:
Use this command to aggregate routes inside an area. If the network IDs in this
area are not configured continuously, a summary route can be advertised by configuring this
command on ABR. This route consists of all single networks belong to specific range.
Example:
Switch # config terminal
Switch (config)# router ospf 100
Switch (config-router)# area 1 range 192.16.0.0/24
1.6.3.6 area stub
Command: area <id> stub [no-summary]
no area <id> stub [no-summary]
Function:
Define a area to a stub area. The “
no area <id> stub [no-summary]
” command
cancels this function.
Parameter: <id>
is the area number which could be digits ranging between 0
～
4294967295,
and also as an IP address.
no-summary:
The area border routes stop sending link summary announcement to the stub
area.
Default:
Not defined.
Command Mode:
OSPF protocol mode.
Usage Guide:
Configure area stub on all routes in the stub area. There are two configuration
commands for the routers in the stub area: stub and default-cost. All routers connected to the
stub area should be configured with area stub command. As for area border routers connected
to the stub area, their introducing cost is defined with area default-cost command.
Example:
Switch # config terminal
Switch (config)# router ospf 100
Switch (config-router)# area 1 stub
1.6.3.7 area virtual-link
Command: area <id> virtual-link A.B.C.D{AUTHENTICATION|AUTH_KEY|INTERVAL}
no area <id> virtual-link A.B.C.D [AUTHENTICATION | AUTH_KEY | INTERVAL]
Function:
Configure a logical link between two backbone areas physically divided by
non-backbone area. The “
no area <id> virtual-link A.B.C.D [AUTHENTICATION | AUTH_KEY
| INTERVAL]
” command removes this virtual-link.
Parameter: <id>
is the area number which could be digits ranging between 0
～
4294967295,
and also as an IP address.
AUTHENTICATION
= authentication [message-digest[message-digest-key <1-255> md5
<LINE>] |null|AUTH_KEY].