Motorola WiNG 5.7.1 System Reference Manual page 915

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 (SPF) 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.
4. Select the Refresh button to update the statistics counters to their latest values.
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