index_O

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

octet boundaries
       subnet masks   2nd   3rd   4th   5th  
octet rules
       IP addresses   2nd   3rd   4th   5th   6th  
octets  
       binary  
       hexadecimal   2nd   3rd   4th   5th  
offset lists
       RIP   2nd   3rd  
offset-list command   2nd   3rd  
OL (Overload) bit  
Opaque LSAs
       OSPFs
               (Open Shortest Path First)  
opcode
       EIGRP packets  
Open Shortest Path First, see OSPF  
operators
       AND
               IP addresses   2nd  
       TCP access lists  
optical protocols
       (TCP/IP)  
options
       OSPF neighbors
               (Open Shortest Path First)  
       OSPF packets
               (Open Shortest Path First)  
options field
       DD packets
               OSPF  
       IP packets   2nd  
       LSAs
               OSPF  
Options field
       OSPF LSAs   2nd  
       TCP  
Originating Router field
       External Routes TLV  
OSI reference model
       TCP/IP, see TCP/IP  
OSPF   [See also IS-IS]
       (Open Shortest Path First)   2nd   3rd   4th  
       ABRs
               (Area Border Routers)  
       adjacencies   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th   13th   14th   15th   16th   17th   18th   19th   20th   21st  
               building   2nd  
               zsee also neighbors  
       areas   2nd   3rd   4th   5th   6th  
               backbone  
               IDs   2nd  
               isolated  
               partitioned   2nd   3rd   4th  
               routers   2nd   3rd   4th  
               stub   2nd   3rd   4th   5th   6th   7th   8th   9th  
               traffic   2nd  
       authentication  
       BDR
               (Backup Designated Routers)   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th  
       configuring   2nd   3rd   4th   5th   6th   7th   8th  
               address summarization   2nd   3rd   4th   5th   6th   7th   8th   9th  
               authentication   2nd  
               demand circuits   2nd   3rd   4th   5th  
               DNS lookups   2nd   3rd  
               loopback interfaces   2nd   3rd   4th   5th   6th   7th   8th  
               NBMA (nonbroadcast multicaccess) networks   2nd  
               NSSA ( not-so-stubby areas)   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th   13th   14th   15th   16th   17th   18th   19th   20th  
               secondary addresses   2nd   3rd   4th   5th   6th   7th   8th   9th   10th  
               stub areas   2nd   3rd   4th   5th  
               totally stubby areas   2nd   3rd  
               virtual links  
       demand circuits   2nd   3rd   4th   5th   6th  
       destinations   2nd   3rd   4th   5th  
       distances
               filtering   2nd   3rd  
       DR
               (Designated Routers)   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th   13th   14th  
       flooding   2nd  
               acknowledgements   2nd   3rd   4th  
               checksums   2nd  
               MaxAge   2nd   3rd   4th  
               sequence numbers   2nd  
       interfaces   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th   13th  
       link-state databases   2nd   3rd   4th   5th   6th  
       lollipop shaped sequencing   2nd  
       LSAs   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th   13th   14th   15th   16th   17th   18th  
               autonomous system external LSAs   2nd   3rd  
               headers   2nd   3rd   4th   5th  
               network LSA   2nd   3rd  
               NSSA external LSAs   2nd  
               Options field   2nd  
               router LSA   2nd   3rd   4th   5th   6th   7th   8th   9th  
               summary LSA   2nd  
       metrics
               cost   2nd   3rd  
       multiple point redistribution
               filtering   2nd   3rd   4th   5th  
       neighbors   2nd   3rd   4th   5th   6th   7th   8th   9th   10th   11th   12th  
               Hello protocol   2nd   3rd   4th   5th   6th   7th  
               states   2nd   3rd   4th  
               zsee also adjacencies  
       networks   2nd   3rd   4th   5th  
       packets   2nd   3rd   4th  
               DD (database description)   2nd   3rd   4th  
               headers   2nd   3rd   4th  
               Hello   2nd   3rd   4th   5th   6th  
               link-state acknowledgements   2nd  
               link-state requests   2nd   3rd  
               link-state updates   2nd  
       paths   2nd   3rd  
       redistribution   2nd  
               EIGRP configuration   2nd   3rd   4th   5th   6th   7th   8th   9th   10th  
               filtering   2nd   3rd   4th  
               metrics  
               route maps   2nd   3rd   4th  
               tagging routes   2nd   3rd   4th   5th   6th  
       route table lookups   2nd  
       SPF algorithm   2nd   3rd   4th  
       states   2nd   3rd  
       troubleshooting   2nd  
               address summarization   2nd   3rd   4th   5th   6th   7th  
               adjacencies   2nd  
               areas   2nd   3rd   4th   5th   6th   7th   8th   9th  
               confgurations  
               link-state databases   2nd  
               neighbors  
               performance   2nd   3rd   4th  
       virtual links   2nd   3rd   4th  
ospf auto-cost reference-bandwidth command  
ospf log- adjacency -changes +command  
out keyword   2nd   3rd  
output-delay command  
Overload (OL) bit  
Overload bit
       LSPs
               (link-state PDUs)   2nd  
oversubscribed links
       OSPF on demand circuits   2nd