Brocade Mobility Access Point System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 789)

Brocade Mobility Access Point System Reference Guide 779
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3. Select OSPF. The Summary tab displays by default.
FIGURE 50 Access Point - OSPF Summary tab
The Summary tab describes the following information fields:
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.