Motorola WiNG 5 System Reference Manual page 683

4. The Summary tab describes the following:
General The general field displays the router ID assigned for this OSPF connection,
RFC compliance information and LSA data. OSPF version 2 was originally
defined within RFC versions 1583 and 2328. The general field displays
whether compliance to these RFCs have been satisfied. The OSPF Link-State
Advertisement (LSA) Throttling feature provides a dynamic mechanism to
slow down link-state advertisement updates in OSPF during times of network
instability. It also allows faster OSPF convergence by providing LSA rate
limiting in milliseconds. LSA information is provided for both external and
opaque LSAs. Opaque LSAs carrying type-length-value elements. These
extensions allow OSPF to run completely out of band of the data plane
network. This means that it can also be used on non-IP networks, such as
optical networks.
ABR/ASBR Lists Autonomous System Boundary Router (ASBR) data relevant to OSPF
routing, including the ASBR, ABR and ABR type. An Area Border Router (ABR)
is a router that connects one or more areas to the main backbone network. It
is considered a member of all areas it is connected to. An ABR keeps multiple
copies of the link-state database in memory, one for each area to which that
router is connected An ASBR is a router connected to more than one Routing
protocol and exchanges routing information with routers in other protocols.
ASBRs typically also run an exterior routing protocol (for example, BGP), or
use static routes, or both. An ASBR is used to distribute routes received from
other, external ASs throughout its own autonomous system. Routers in other
areas use ABR as next hop to access external addresses. Then the ABR
forwards packets to the ASBR announcing the external addresses
SPF Refer to the SPF field to assess the status of the shortest path forwarding
(SFF) execution, last SPF execution, SPF delay, SPF due in, SPF hold multiplier,
SPF hold time, SPF maximum hold time and SPF timer due flag.
Stub Router The summary screen displays information relating to stub router
advertisements and shutdown and startup times. An OSPF stub router
advertisement allows a new router into a network without immediately
routing traffic through the new router and allows a graceful shut down or
reload a router without dropping packets that are destined for other
networks. This feature introduces three configuration options that allow you
to configure a router that is running the OSPF protocol to advertise a
maximum or infinite metric to all neighbors.
5. Select the Refresh button to update the statistics counters to their latest values.
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