Brocade Mobility RFS Controller CLI Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 1233)

Brocade Mobility RFS Controller CLI Reference Guide 1225
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An OSPF network can be subdivided into routing areas to simplify administration and optimize
traffic utilization. Areas are logical groupings of hosts and networks, including routers having
interfaces connected to an included network. Each area maintains a separate link state database
whose information may be summarized towards the rest of the network by the connecting router.
Areas are identified by 32-bit IDs, expressed either in decimal, or octet-based dot-decimal notation.
Areas can defined as: stub area, totally-stub, non-stub, nssa, totally nssa. Each of these area types
have been discussed further in the
area-type section of this chapter.
At least one default area, bearing number ‘0’, should be configured for every OSPF network. In case
of multiple areas, the default area 0 forms the backbone of the network. The default area 0 is used
as a link to the other areas. Each area has its own
link-state database.
A router running OSPF sends hello packets to discover neighbors and elect a designated router. The
hello packet includes link state information and list of neighbors. OSPF is savvy with layer 2
topologies. If on a point-to-point link, OSPF knows it is sufficient, and the link stays up. If on a
broadcast link, the router waits for election before determining if the link is functional.
Supported in the following platforms:
• Access Points — Brocade Mobility 650 Access Point, Brocade Mobility 6511 Access Point,
Brocade Mobility 1220 Access Point, Brocade Mobility 71XX Access Point, Brocade
Mobility 1240 Access Point
• Wireless Controllers — Brocade Mobility RFS4000, Brocade Mobility RFS6000, Brocade
Mobility RFS7000
Syntax:
area [<0-4294967295>|<IP>]
Parameters
area [<0-4294967295>|<IP>]
Example
rfs7000-37FABE(config-profile default-rfs7000-router-ospf)#area 4 ?
rfs7000-37FABE(config-profile default-rfs7000-router-ospf-area-0.0.0.4)#?
Router OSPF Area Mode commands:
area-type OSPF area type
authentication Authentication scheme for OSPF area
no Negate a command or set its defaults
range Routes matching this range are considered for summarization
(ABR only)
clrscr Clears the display screen
commit Commit all changes made in this session
do Run commands from Exec mode
end End current mode and change to EXEC mode
exit End current mode and down to previous mode
help Description of the interactive help system
revert Revert changes
service Service Commands
show Show running system information
write Write running configuration to memory or terminal
<0-4294967295> Defines an OSPF area in the form of a 32 bit integer. Specify the value from 0 - 4294967295.
<IP> Defines an OSPF area in the form of an IP address. Specify the IP address.