O

Index

[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W]

octets
     binary
     boundary subnet masks
     hexadecimal
     subnetting
ODR (On-Demand Routing)
     CDP
     configuring
     redistribution
offset lists, RIP
offset-list command 2nd
OL (Overload) bit
opaque LSAs
Operation field (ARP packets)
operation of OSPFv3
operators
     Boolean AND function 2nd
     Boolean OR function
optical protocols
Options field
     IP packets
     LSAs
     TCP
OSPF (Open Shortest Path First). [See also OSPFv3]
     ABRs
     address summarization, configuring
     adjacencies
         formation of, decision points
         troubleshooting
     area-wide problems, troubleshooting
     areas
         Area ID
         backbone
         maximum size of
         not-so-stubby areas
         partitioned areas
         path types
         stub areas
         totally stubby areas
         traffic types
     ASBRs
     authentication
         configuring
     backbone routers
     BDRs
         election process
     broadcast networks
     configuring
         on NBMA networks
         over demand circuits
     cost metric, modifying
     DD packets
     Domain Name Service lookups, configuring
     DRs
         election process
     features of
     Hello packets
     Hello protocol
     interface state machine
         input events
     interfaces, data structure
     internal routers
     isolated areas, troubleshooting
     link state database
         LSA group pacing
     link state refresh process
     link-state database 2nd
     links
     loopback interfaces
     LSAs
         ASBR Summary LSAs
         Autonomous System External LSAs
         External Attributes LSAs
         filtering
         flooding process
         Group Membership LSAs
         group pacing
         header format
         Network LSAs 2nd
         Network Summary LSAs 2nd
         NSSA External LSAs 2nd
         Opaque LSAs
         Options field
         Router LSAs 2nd
         sequence numbers
         types of
     metrics, cost 2nd
     misconfigured summarization, troubleshooting
     MOSPF
     NBMA networks
     neighbor table
     neighbors
         data structure
         input events
         state machine
     NSSAs
         configuring
     over demand circuits
     oversubscription
     packets
         Database Description packets
         header format
         Hello packets
         Link State Acknowledgment packets
         Link State Request packets
         Link State Update packets
     point-to-multipoint networks
     point-to-point networks
     PollInterval
     presumption of reachability
     pseudonodes
     redistribution into EIGRP, configuring
     reference bandwidth
     refresh process versus IS-IS Update process
     route table entries, lookups
     Router IDs
         configuring
     RouterDeadInterval
    routing table entries
         destination types
         path types
     secondary addresses, configuring
     similarities with IS-IS
     stub areas, configuring
     stub networks
     totally stubby areas, configuring 2nd
     transit networks
     troubleshooting
     virtual links 2nd
         configuring 2nd
OSPFv3
     configuring
     Frame-Relay mapping
     LSAs
         AS-External LSAs
         format
         Inter-Area Prefix LSAs
         Inter-Area Router LSAs
         Intra-Area Prefix LSAs
         Link LSAs
         Network LSAs
         Router LSAs 2nd
     messages
     multiple instances on a link, configuring
     on NBMA networks, configuring
     operation
     redistribution into RIPng
     stub areas configuring
     troubleshooting
     versus OSPFv2
out keyword
output-delay command
oversubscription